HP Type F02, Type K02, MMS, MRS User Manual

AC Controls

Manual Starters and Switches

Class MMS and MRS

These motor starting switches provide
manual ON / OFF control of single or
three-phase AC motors, where overload
protection is not required, or is provided
separately.

These devices are suitable for use with
AC three-phase motors up to 10 HP.
Compact construction and a 600 volt
rating make these switches suitable for

Type F02

Class SMF

Class SMF fractional horsepower
starters provide overload protection as
well as manual ON / OFF control for
small motors in a variety of industrial
and commercial installations.

Available in one or two pole versions,
these devices are suitable for use with
AC single phase motors to 1 HP. Two
pole starters can also be used with DC
motors to
include fans, conveyors, pumps, and
small machine tools. The continuous
current rating is 16 amperes.

Overload trip assembly motor protection
is provided by a Type SMFH thermal
heater element which must be installed
before the starter will operate.

Two-Speed Class SMF manual starters
are designed for control of small single
phase AC motors having separate wind­ings for high and low speed operation.
Two toggle operated starters are used,
with overload protection included for
each motor winding. Surface mounting
devices, and those with a gray flush
plate, utilize a mechanical interlock
which allows direct control of the motor
by means of the toggle operators.

3

⁄4HP. Typical applications

Typical Wiring Diagrams

a wide range of industrial and commer­cial uses. Typical applications include
small machine tools, pumps, fans, con­veyors, and many other types of electri­cal machinery. They can also be used
on non-motor loads such as resistance
heaters.

The continuous current rating is 30
amperes at 250 volts max., 26.4 am­peres at 277 volts max., 20 amperes
at 600 volts max, 30 ampere resistive
at 600 volts max.

Class MMS, two-speed manual switch­es may be used with separate winding,
three-phase or single-phase AC motors
where overload protection is not
required, or is provided separately. Two
switches are employed to give ON /
OFF control in each speed.

Class MRS, reversing manual switches
provide a compact means of starting,
stopping and reversing AC motors where
overload protection is not required, or is
provided separately. They are suitable for
use with three-phase squirrel cage
motors, and for single-phase motors
which can be reversed by reconnecting
motor leads. Two switches are used, one
to connect the motor for forward rota­tion, and one for reverse.

Class SMF, MMS and MRS

NEMA Type 1 surface mounting enclo­sures are sheet steel with a thermoplas­tic wrap-around cover for convenience
in wiring. The NEMA Type 1 enclosure
is also available in oversized and jumbo

General

Type K02

versions allowing more wiring space. A
zinc alloy die casting or non-metallic
enclosure is used for NEMA Type 4
enclosures. NEMA 7 & 9 enclosures are
supplied as standard with provisions for
locking in the ON or OFF position.

Standard red or non-standard green
neon pilot light units are available facto­ry installed in NEMA Type 1 surface and
flush mounting, and NEMA Type 4
enclosures, or as a field modification kit
for NEMA Type 1 enclosures and gray
flush plates.

An “Emergency-OFF” toggle operator
extender is available for NEMA Type 1
surface mounted units. The extender
has a red vinyl button that provides a
fast and easy method for locating and
switching the device’s toggle operator
into the OFF position. The Emergency
OFF Actuator is available in kit form
only for field installation.

An optional Handle Guard / Lock-OFF on
NEMA Type 1 enclosed starters pre­vents accidental operation of the toggle
and also allows the toggle operator to
be padlocked in either the ON or the
OFF position. This handle guard can be
factory installed on NEMA Type 1
enclosed starters and is also available in
kit form for field installation on NEMA
Type 1 surface and flush mounting
enclosures. Standard NEMA Type 4
metallic enclosures include provision for
padlocking in the OFF position.

Class SMF Class MMS

1 Pole

2 Pole

2 Pole with

Selection Switch

Siemens Electrical Products and Systems

Specification Guide

2 Pole –– 1 Phase 3 Pole –– 3 Phase

15

AC Controls

285CSI Section 16160

AC Controls

Manual Starters and Switches

Class MMS and MRS

These motor starting switches provide
manual ON / OFF control of single or
three-phase AC motors, where overload
protection is not required, or is provided
separately.

These devices are suitable for use with
AC three-phase motors up to 10 HP.
Compact construction and a 600 volt
rating make these switches suitable for

Type F02

Class SMF

Class SMF fractional horsepower
starters provide overload protection as
well as manual ON / OFF control for
small motors in a variety of industrial
and commercial installations.

Available in one or two pole versions,
these devices are suitable for use with
AC single phase motors to 1 HP. Two
pole starters can also be used with DC
motors to
include fans, conveyors, pumps, and
small machine tools. The continuous
current rating is 16 amperes.

Overload trip assembly motor protection
is provided by a Type SMFH thermal
heater element which must be installed
before the starter will operate.

Two-Speed Class SMF manual starters
are designed for control of small single
phase AC motors having separate wind­ings for high and low speed operation.
Two toggle operated starters are used,
with overload protection included for
each motor winding. Surface mounting
devices, and those with a gray flush
plate, utilize a mechanical interlock
which allows direct control of the motor
by means of the toggle operators.

3

⁄4HP. Typical applications

Typical Wiring Diagrams

a wide range of industrial and commer­cial uses. Typical applications include
small machine tools, pumps, fans, con­veyors, and many other types of electri­cal machinery. They can also be used
on non-motor loads such as resistance
heaters.

The continuous current rating is 30
amperes at 250 volts max., 26.4 am­peres at 277 volts max., 20 amperes
at 600 volts max, 30 ampere resistive
at 600 volts max.

Class MMS, two-speed manual switch­es may be used with separate winding,
three-phase or single-phase AC motors
where overload protection is not
required, or is provided separately. Two
switches are employed to give ON /
OFF control in each speed.

Class MRS, reversing manual switches
provide a compact means of starting,
stopping and reversing AC motors where
overload protection is not required, or is
provided separately. They are suitable for
use with three-phase squirrel cage
motors, and for single-phase motors
which can be reversed by reconnecting
motor leads. Two switches are used, one
to connect the motor for forward rota­tion, and one for reverse.

Class SMF, MMS and MRS

NEMA Type 1 surface mounting enclo­sures are sheet steel with a thermoplas­tic wrap-around cover for convenience
in wiring. The NEMA Type 1 enclosure
is also available in oversized and jumbo

General

Type K02

versions allowing more wiring space. A
zinc alloy die casting or non-metallic
enclosure is used for NEMA Type 4
enclosures. NEMA 7 & 9 enclosures are
supplied as standard with provisions for
locking in the ON or OFF position.

Standard red or non-standard green
neon pilot light units are available facto­ry installed in NEMA Type 1 surface and
flush mounting, and NEMA Type 4
enclosures, or as a field modification kit
for NEMA Type 1 enclosures and gray
flush plates.

An “Emergency-OFF” toggle operator
extender is available for NEMA Type 1
surface mounted units. The extender
has a red vinyl button that provides a
fast and easy method for locating and
switching the device’s toggle operator
into the OFF position. The Emergency
OFF Actuator is available in kit form
only for field installation.

An optional Handle Guard / Lock-OFF on
NEMA Type 1 enclosed starters pre­vents accidental operation of the toggle
and also allows the toggle operator to
be padlocked in either the ON or the
OFF position. This handle guard can be
factory installed on NEMA Type 1
enclosed starters and is also available in
kit form for field installation on NEMA
Type 1 surface and flush mounting
enclosures. Standard NEMA Type 4
metallic enclosures include provision for
padlocking in the OFF position.

Class SMF Class MMS

1 Pole

2 Pole

2 Pole with

Selection Switch

Siemens Electrical Products and Systems

Specification Guide

2 Pole –– 1 Phase 3 Pole –– 3 Phase

15

AC Controls

285CSI Section 16160

AC Controls

115–230

113⁄

4

277

11

Table 15.1 Horsepower Ratings

Maximum Horsepower
AC Single Phase DC 2-Pole Only
1-Pole 2-PoleVoltage

—

Device

Class
MMS

2223121Single Phase

Number
of
Poles

AC Ratings DC Ratings

Table 15.2 Horsepower Ratings

115
Volts

230
Volts

460–575
Volts90Volts

115
Volts

230
Volts

Motor Type
AC

1

⁄

2

3 2 10 1 2 1Three Phase

1

⁄

2

7

1

⁄

2

Class
MRS

2223121Single Phase

1

⁄

2

3 2 10 1 2 1Three Phase

1

⁄

2

7

1

⁄

2

Class
MMS
Two
Speed

2223121Single Phase

1

⁄

2

3

3

210121

3 Phase, Constant
or Var. Torque

1

⁄

2

7

1

⁄

2

210121

3 Phase,
Constant HP

7

1

⁄

2

Two-Speed Starters (AC Only)

Basic Starter

Starter With Handle Guard / Lock-Off

Class MMS — Reversing

Class MMS — Two-Speed

One Starter In Duplex Enclosure

Two Starters In One Enclosure

Starter and “Auto-Off-Hand” SPDT Selector Switch (AC Only)

Class SMF Fractional Horsepower
Manual Starters with Melting
Alloy Type Thermal Overload Relay,
Single Unit Types

Class MRS and MMS Manual
Switches

Toggle

Toggle

Toggle

Key

Toggle

Toggle

Toggle

Key

Key

1

Standard With Red Pilot Light

Standard With Red Pilot Light

Standard With Red Pilot Light

No. of
Poles

Type of
Operator

Table 15.3 Manual Starters and Switches Features

Features

Class MMS — Non-Reversing

No. of
Poles

Type of
Operator Features

No. of
Poles

Features
(Incl. Mechanical
Interlock)

Type of
Operator

Suitable for
Motor Types

2
1
2

1
2
1
2

2

Standard With Pilot Light (115 and 230 VAC)
Standard With Pilot Light (205–240 and 440–600 VAC)

Standard With Pilot Light (208–240 and 440–600 VAC)

Single-Phase Two­Winding (3-Lead)

Std. With Pilot Light
(115 and 230 VAC)

3

3-Phase and 1-Phase
Capacitor, Split-Phase
4-Lead Repul.-Induct.

Std. With Pilot Light
(110–120, 208-220,
440–600 VAC)

2

Single-Phase Two­Winding (3-Lead)

Std. With 2 Pilot Lights
(115 and 230 VAC)

3

Three-Phase
Separate Winding
(Wye-Connected)

Std. With 2 Pilot Lights
(208-220, and
440–600 VAC)

Standard With Pilot Light (115 and 230 VAC)

1
2
1
2

2
2

Toggle

Toggle

Key

Standard With Red Pilot Light

With Mechanical Interlock (Standard With 2 Red Pilot Lights)

With Red Pilot Light

1

1

With High-Off-Low Selector Switch (With 2 Red Pilot Lights)2

2
2

Toggle
Key

Standard With Red Pilot Light On Each

2 Each
Str.

0.157–0.173

SMF H01

Motor Full-Load
Current (Amperes)

Heater
Cat. No.

0.59–0.65

SMF H014

Motor Full-Load
Current (Amperes)

Heater
Cat. No.

1.80–1.99

SMF H027

Motor Full-Load
Current (Amperes)

Heater
Cat. No.

5.86–6.41

SMF H40

0.174–0.192

SMF H02

0.66– 0.71

SMF H015

1.96–2.15

SMF H028

6.42–6.79

SMF H41

0.193–0.212

SMF H03

0.72– 0.78

SMF H016

2.16–2.38

SMF H029

6.80–7.57

SMF H42

0.213–0.235

SMF H04

0.79– 0.85

SMF H017

2.39–2.75

SMF H030

7.58–8.15

SMF H43

0.236–0.261

SMF H05

0.86– 0.96

SMF H018

2.76–2.84

SMF H031

8.16–8.98

SMF H44

0.262–0.289

SMF H06

0.97–1.04

SMF H019

2.85–3.06

SMF H032

8.99–9.67

SMF H45

0.290–0.321

SMF H07

1.05–1.16

SMF H020

3.07–3.45

SMF H033

9.68–9.95

SMF H46

0.322–0.355

SMF H08

1.17–1.25

SMF H021

3.46–3.70

SMF H034

9.96–10.8

SMF H47

0.356–0.399

SMF H09

1.30–1.39

SMF H022

3.71–4.07

SMF H035

10.9–12.1

SMF H48

0.40–0.44

SMF H010

1.38–1.54

SMF H023

4.08–4.32

SMF H036

12.2–13.1

SMF H49

0.45– 0.49

SMF H011

1.48–1.63

SMF H024

4.33–4.90

SMF H037

13.2–13.9

SMF H50

0.50– 0.53

SMF H012

1.57–1.75

SMF H025

4.91–5.35

SMF H038

14.0–15.0

SMF H51

0.54– 0.58

SMF H013

1.66–1.86

SMF H026

5.36–5.85

SMF H039

15.1–16.0

SMF H52

Motor Full-Load
Current (Amperes)

Heater
Cat. No.

Table 15.4 Class SMF Heater Elements

Manual Starters and Switches

General

15

AC Controls

286 CSI Section 16160

Siemens Electrical Products and Systems

Specification Guide

AC Controls

Device

Type of
Operator

Dimensions
in Inches (mm)

Toggle

Key

Toggle

SMF

SMF

SMF

Two
Starters

One
Starter
and One
Selector
Switch



Table 15.7 General Purpose Flush Mounting
for Two Unit Devices

FF22, 22P
FS22P
FF44P
FS44P
FF71, 71P, 72, 72P
FS71P, 72P

Type

5.25 (133)

4.56 (116)

5.25 (133)

4.56 (116)

5.25 (133)

4.56 (116)

A

3.75 (95)

3.50 (89)

3.75 (95)

3.50 (89)

0.75 (19)

3.50 (89)

BC

5.25 (133)

4.50 (114)

5.25 (133)

4.50 (114)

5.25 (133)

4.50 (114)

1.44 (37)

1.44 (37)

1.44 (37)

1.44 (37)

2.00 (51)

D

Class

Key

Toggle

SMF

MRS

Switch

FF74P
FS74P
KF11, 11A, 11B

KF 22, 22A
22B, 22C

5.25 (133)

4.56 (116)

5.25 (133)

3.75 (95)

3.50 (89)

3.75 (95)

5.25 (133)

4.50 (114)

5.25 (133)

2.00 (51)

2.00 (51)

1.75 (44)

Toggle

Toggle

SMF

MMS

Two
Speed
Starter

Two
Speed
Switch

FF11, 11P, 22
22P

KF11, 11A, 11B
22, 22B, 22C

5.25 (133)

5.25 (133)

3.75 (95)

3.75 (95)

5.25 (133)

5.25 (133)

1.44 (37)

1.75 (44)

Reversing

2.00 (51)



Selector switch is on left, extends 1.62 in (41 mm) from mounting surface.

Manual Starters and Switches

Table 15.5 General Purpose Flush Mounting

Dimensions
in Inches (mm)

ABC

1.44
(37)

1.44
(37)

1.44
(37)

1.44
(37)

1.75
(44)

1.75
(44)

1.75
(44)

1.75
(44)

2.75
(70)

3.50
(89)

2.75
(70)

3.50
(89)

2.75
(70)

3.50
(89)

2.75
(70)

3.50
(89)

Device

Class
SMF
Fractional
HP Starter

Class
MMS
Motor
Starting
Switch

Type of
Operator

Toggle

Key

Toggle

Key

Type

FF1, 1P, 2, 2P
FS1, 1P, 2, 2P

FSJ1P, 2P

FF3, 3P, 4, 4P
FS3, 3P, 4, 4P

FSJ3P, 4P

KF1, 1A, 1B, 2, 2B, 2C
FS1, 1A, 1B, 2, 2B, 2C

KSJ1A, 1B, 2B, 2C

KF3, 3A, 3B, 4, 4B, 4C
FS3, 3A, 3B, 4, 4B, 4C

KSJ3A, 3B, 4C, 4C

Table 15.6 Two Unit Devices
NEMA Type 1 General Purpose Enclosure

Dimensions

4.50
(114)

5.25
(133)

4.50
(114)

5.25
(133)

4.50
(114)

5.25
(133)

4.50
(114)

5.25
(133)

Type of

Device

One Starter

Two Starters

One Str. and
One Sel. Sw.

Reversing Switch

Two Speed Starter
Two Speed Switch

햲

Selector switch is on left, increases overall depth to 3.5 in. (89mm)

햳

Only one pilot light (located on right) is used on MRS switches.

Operator

Toggle
Key
Toggle
Key

햲

Toggle
Key

햳

Toggle

Toggle
Toggle

Class

SMF
SMF
SMF
SMF
SMF
SMF

MRS

SMF
MMS

Type

FG02, 02P
FG04P
FG222, 222P
FG44P
FG71, 71P, 72, 72P
FG74P
KG11, 11A, 11B, 22, 22A, 22B
22C
FG11, 11P, 22, 22P
KG11, 11A, 11B, 22, 22B, 22C

Siemens Electrical Products and Systems

Specification Guide

15

AC Controls

287CSI Section 16160

AC Controls

Type
1-Phase
3-Phase

2

230–
575
Volts

115
Volts

120VDCContinuous

Amp Rating

3241

——

215

Table 15.9
Class 12 Manual Starting Switches

Maximum Horsepower

Device

Type of
Operator

Toggle

Toggle

Class SMF
Fractional
HP Starter

Class MMF
Motor
Starter
Switch

FR2, FR2H
FR1, FR1H

KR2, KR2H
KR2, KR1H

Type

Table 15.8 Explosion Proof
NEMA 7 & 9 Enclosures

1.19 in.

(30.23 mm)

0.75 in. -14
(19.05 mm)

Pipe Tap

(Bottom Only)

9⁄32
Padlock
Hole

0.72 in.

(18.29 mm)

1.38 in.

(34.93 mm)

Center Line

(Conduit)

0.31 in.

(7.94 mm)

Mtg. Holes

4.38 in.

(111.25 mm)

3.97 in.

(100.8 mm)

1.38 in.

(35.05 mm)

6.38 in.

(162 mm)

5.75 in.

(146 mm)

Manual Motor Starter Switches

Dimension / Wiring Diagrams

Application

Class 12 manual starting switches are
designed to economically start and stop
inherently protected single and polyphase
motors as used in light machine tools,
pumps, blowers, and vent-fans. They are
also used as ON and OFF switches for
resistive loads such as heating.

Wiring Diagrams

1-Phase

Dimension Drawings

NEMA 1

Features

This switch is compact, economical, and
easily wired using pressure type screw
connectors. A rugged over center toggle
mechanism results in a long life with
weld free operation. It is available for sur­face mounting in a NEMA 1 enclosure,
for flush mounting on a standard depth
switch box or in custom panels. A pilot
light for 120, 208 / 240, or 480 volts may

3-Phase

be added at any time before or after
installation.

Open with Flush Plate

15

AC Controls

288 CSI Section 16160

Siemens Electrical Products and Systems

Specification Guide

AC Controls

Manual Motor Starter Protector

쐍 The Manual Starters Meet or Exceed

Requirements of NEMA, EEMAC, UL,
CSA, IEC, VDE and Other International
Standards. The built-in instantaneous
magnetic trip (similar to a circuit
breaker with arc chamber) provides
self protection against low-level short
circuits.

쐍 Motor Ratings — Up to 25 HP 3-

Phase and 10 HP Single Phase.

Type 3VU13 Manual Motor Starter
Protector

Siemens 3VU13 is a 3-phase manual
starter providing adjustable overload
protection, optional field installed under­voltage protection, and short circuit
protection.

Features

쐍 Built-in Short Circuit Protection. Short

circuit protection provided by the
usual branch circuit protection device
feeding a manual starter (fuse or cir­cuit breaker in accordance with NEC
430-52) may not protect a common
manual starter. The factory built-in
instantaneous trip of the Motor Starter
Protector will protect the starter as
well as the cable and motor during
low level faults.

쐍 Class 10 Adjustable Ambient

Compensated Overload Protection.

쐍 Phase Loss Sensitivity.
쐍 Undervoltage Protection — UV trip

module may be added in field.

쐍 Shunt Trip Module is also field adda-

ble.

쐍 Available in Open Styles, NEMA 1 and

3R, watertight, dusttight, under table,
and flush mount enclosures.

쐍 1 NO and 1 NC Auxiliary Contacts

Standard.

쐍 Group Installation - UL 508.

The 3VU13 is suitable for Group
Installation at 5kA 600 volts maximum
with any fuse up to 1200 amperes or
any inverse time circuit breaker up to
1200 amperes. The 3VU13 can be
installed with or without Siemens con­tactors type 3TF2 or 3TF30 to 3TF34
in series. For higher interrupting rat­ings, consult Siemens.

General / Dimensions

Overlead and Magnetic Trip Tripping
Characteristics

Table 15.10 Technical Data

Manual Motor Starter Protector
Type
Maximum Rated Continuous

Current (Amperes)
Rated Operating Voltage AC

—Power Circuit
—Control Circuit
Ambient Temperature

Compensation °C

Maximum Rated HP of
3-phase Motors At:

—AC 200V
—AC 240V
—AC 460V
—AC 575V

–

3VU13

25

600V

20 +55

5

7
15
20

1

⁄

2

3VU13 Enclosure Dimensions

15

AC Controls

Siemens Electrical Products and Systems

Specification Guide

289CSI Section 16160

AC Controls

Manual Motor Starters and Contactors

Application

Across the line manual motor starters
and contactors provide control for
machinery where start stop remote con­trol is not required (optional remote stop
available). Class 11 manual starters are
used for single and polyphase motors up
to 10 Hp. Starters have melting alloy
overload relays which help protect
against damage due to excessive current
caused by a sustained overload, low line
voltage, or single phasing of the motor.

Contactors provide control for inherently
protected motors. Typical applications
include metal and wood-working machin­ery, grinders, power saws, conveyors,
fans pumps, blowers, textile and packag­ing machinery, slitters, and paper cutters.

Features

Class 11 manual controllers have front
accessible pressure type wire connec­tors. Ample wiring space is provided for
easy wiring.

A complete line of general purpose and
industrial duty enclosures is available as
well as open type mounting for custom
built enclosures. These manual con­trollers are available with low voltage pro­tection which will automatically open the
power poles when the voltage drops or
the power is interrupted. A remote stop
function may be incorporated with the
low voltage protection coil as a factory
option to provide remote or semi-auto­matic operation.

Class 11 controllers provide the OSHA
requirements for protecting personnel
from potential injury caused by the auto­matic start up of machinery following a
voltage drop or power interruption when
low voltage protection is specified.

Open styles and devices in NEMA 1, 4, 7
& 9, 12 enclosures can be padlocked in
the OFF position.

General / Wiring Diagrams

Table 15.11
Class 11 Manual Motor Starters

Maximum Horsepower

Type

1-Phase

Type Size 200/230 Volts 460/575 Volts

3-Phase

Size 115 Volts 200/230 Volts

M0
M1
M1P

M0
M1

12
23
35

35

1

⁄

710

2

15

AC Controls

290 CSI Section 16160

Siemens Electrical Products and Systems

Specification Guide

AC Controls

Enclosure
Type Fig

Outline Dimensions in Inches (mm)

Mounting
Dimensions in Inches (mm)

Mtg.
Screw Conduit Size

Max
Wire
Size

Approx
Ship Wt
Lbs

Ref
Dwg

1
2
3
4
5
6

5.313 (134.94)

8.000 (203.20)

11.875 (301.63)

11.875 (301.63)

11.000 (279.40)

9.700 (233.36)

Open
NEMA 1
NEMA 4
NEMA 4X
NEMA 7 & 9
NEMA 12

Table 15.12 Motor Starters

A

2.500 ( 63.50)

5.688 (114.46)

6.250 (158.75)

7.938 (201.62)

7.125 (184.15)

5.875 (149.23)

B

3.625 ( 92.08)

3.188 ( 80.96)

5.125 (130.18)

7.313 (185.74)

5.875 (149.23)

5.063 (128.59)

C

5.500 (139.70)

5.875 (149.23)

10.375 (263.53)

11.125 (282.58)

9.188 (233.36)

8.625 (219.08)

DE

2.250 ( 57.15)

2.500 ( 63.50)

4.125 (104.78)

6.875 (174.63)

6.063 (153.99)

3.000 ( 76.20)

10
10
1/4
10
1/2
—

8
8
8
8
8
8

3
8
10
12
27
11

—
1/2 – 3/4
—
1
1/2
—

—
—
—
—
3/4
—

D54755
D25055
D54824
D26243
D56049
D25293

GK1 K2

Manual Motor Starters and Contactors

Dimensions

Figure 1

Figure 4

Figure 2

Figure 5 Figure 6

Figure 3

15

AC Controls

Siemens Electrical Products and Systems

Specification Guide

291CSI Section 16160

AC Controls

2.63

0.59

0.34

0.305

0.25

1.49

0.121

9.08

1.82

1.05

0.91

0.79

0.45

0.36

0.37

0.08

0.05

0.045

0.03

0.02

0.02

1.04

0.21

0.12

0.105

0.090

0.052

0.042

24
120
208

24013.3
277
480
600
24
120
208
240 8.6
277
480
600

12.90

2.58

1.49

1.29

1.12

0.646

0.516

4.25

2.45

2.14

1.77

1.08

0.85

1.08

0.217

0.125

0.108

0.094

0.054

0.043

0.425

0.245

0.215

0.183

0.112

0.085

24
120
208
24014
277

6.32 0.48240

480
600
120
208
240

22

277
480
600

12.65

3.16

2.53

1.45

0.96

0.24

0.193

0.25

120

480

63

600
240

0.73

218

70

310

510

1518

350 0.12

10

25

26

51

116

60

0.10 0.58600

48040

00

0
thru
2

1

/

2

3, 31/

2

4

4

1

/2, 5

6

Inrush
(Open Magnet)

Table 15.13 Coil Data

Watts

Volts
60Hz Amps VA

Normal
(Sealed Magnet)

Amps VA

Class
Size

00
0-1
2
3
4

Competitive Product Comparison
Size 1 Starters 14-PC2
Furnas The Right Choice Form 1485
Specifying a NEMA Rated Starter Form 1555

5
6

PM-60.1
PM-60.1
PM-60.1
PM-60.1
PM-60.1
PM-60.1
PM-60.1

Class 21 Lighting Contractor

14-GBG
14-GEP
14-GFP
14-GHP
14-GJG
14-GKF-B
14-GMF-B
21-GWE

—
1

3

/

4

21/

2

31/

2

41/

2

Table 15.14 Reference Literature

Motor Matched
Half Size Instruction Sheet

Instruction Sheets and Replacement Parts

Replacement Parts

NEMA
Size

Magnetic Contactors

Applications

Class 40 industrial magnetic contactors
are designed for electrical loads such as
heating, lighting, transformer and capaci­tor switching, and AC motor starting.
They control motors already protected by
inherent or other types of overload
devices. Used with appropriate pilot con­trol, a contactor provides a choice of
undervoltage protection or release.

Class 40 contactors Size 0 thru 6 feature
carefully wound coils encapsulated to
seal out moisture. Encapsulation also pro­motes heat transfer and resists electrical,
mechanical, and thermal stresses.

Features

Horsepower rated contactors are avail­able in NEMA sizes 00 through 6, plus
four Siemens Furnas Half Sizes: 1

1

3

⁄

able as an open type or in NEMA 1, 3, 4,
4X, 7 & 9, or 12 enclosures. These con­tactors can also be used on capacitor and
transformer switching applications.

Resistance heating contactors are avail­able in 11 sizes from 10 through 350
amperes in 2- and 3-pole models and in 4
sizes in 4-pole models.

Lighting contactors are available in 11
sizes from 20 through 600 amperes in 2­and 3-pole models and in 3 sizes in 4­pole models. Lighting contactors are
especially designed to switch ballast
type, tungsten, and other discharge type
lighting loads. These contactors may be
controlled by timers and other pilot
devices.

These contactors are also available with a
DC coil and rectifier for reduction of AC
hum in noise-sensitive areas such as hos­pitals, schools, and similar locations.

For information and availability of
mechanically held lighting contactors,
contact your local sales office.

15

AC Controls

292 CSI Section 16160

, and 4

2

1

⁄

. These contactors are avail-

2

3

1

⁄

, 2

⁄

4

2

Compact Lighting Contactor Size 0–13/

,

Siemens Electrical Products and Systems

Specification Guide

General

4

AC Controls

Lighting and Heating Contactors

Table 15.15 Type CLH Multi-Pole Electrically-Held Lighting
and Heating Contractors (Open Type)

Ampere
Rating

20

30

60

100
200 7.28 (185)7.08 (133)3 5.31 (135)
300 7.79 (198)7.87 (200)3 5.70 (145)
400 8.74 (222)7.87 (200)3 6.29 (160)

No. of

Poles

2/4

6/8 10/12

330

6/9

12

3

6/9/12

Table 15.16 Type CLB, CLF, CLN 3-Pole Electrically-Held Combination Lighting and Heating Contactors
(Combination Fusible, Non-Fusible, or Circuit Breaker)

Ampere
Rating

20
30
60

100 8.0 (203)24.0 (610)3
200 12.5 (318)36.0 (914)3 24.0 (610)
300 12.5 (318)48.0 (1219)3 30.0 (762)

No. of
Poles

3

Dimensions In Inches (mm)

2.95 (75)

2.95 (75)

2.95 (75) 4.44 (112.77)

4.60 (117)

15.98 (406)

5.23 (133)3 3.93 (100)

Dimensions In Inches (mm)
NEMA 1 Enclosed NEMA 3R / 12 Enclosed

24.0 (610) 8.0 (203)10.0 (254)

Width (W) Depth (D)Height (H)

1.77 (45)

6.88 (175)

1.77 (45) 4.23 (107.44)

6.88 (175)

8.85 (225)

3.54 (90)

15.47 (393)

Width (W) Depth (D)Height (H) Width (W) Depth (D)Height (H)

20.0 (508)

3.93 (99.82)

4.44 (112.77)

5.51 (140)

24.0 (610) 8.0 (203)10.0 (254)

Dimensions

8.0 (203)24.0 (610) 20.0 (508)

12.5 (318)36.0 (914) 24.0 (610)

12.5 (318)48.0 (1219) 30.0 (762)

Table 15.17 Type CLH Multi-Pole Electrically-Held Lighting and Heating Contactors

Dimensions In Inches (mm)

Ampere
Rating

20 6.65 (169)14.06 (357)2–12 6.81 (173)
30 5.33 (135)10.05 (255)3 5.56 (141)
30 6.65 (169)14.06 (357)6 / 9 / 12 6.81 (173)
60 6.65 (169)14.06 (357)3 6.81 (173)
60 9.88 (251)20.0 (508)6–12 16.0 (406)

100
200 22.0 (559)3 10.5 (267) 11.0 (279)32.0 (813) 18.0 (457)
300 11.0 (279)32.0 (813)3 18.0 (457) 11.0 (279)32.0 (813) 18.0 (457)
400 11.0 (279)32.0 (813)3 18.0 (457) 11.0 (279)32.0 (813) 18.0 (457)

No. of
Poles

NEMA 1 Enclosed NEMA 3R / 12 & 4 Enclosed

20.0 (508)3 9.0 (229) 7.8 (198)22.0 (559) 11.0 (279)

Width (W) Depth (D)Height (H) Width (W) Depth (D)Height (H)

7.72 (196)

Table 15.18 Type CLM Multi-Pole Mechanically-Latched 20 Ampere Lighting and Heating Contactor

Dimensions In Inches (mm)

Ampere
Rating

20 6.65 (169)14.06 (357)2–12 6.81 (173) 6.48 (165)15.0 (381) 10.75 (273)

No. of
Poles

NEMA 1 Enclosed NEMA 3R / 12 & 4 Enclosed

Width (W) Depth (D)Height (H) Width (W) Depth (D)Height (H)

6.48 (165)15.0 (381) 10.75 (273)

6.48 (165)15.0 (381) 10.75 (273)

7.8 (198)22.0 (559) 11.0 (279)

15

20 Ampere CLM Open Contactor

Siemens Electrical Products and Systems

Specification Guide

AC Controls

293CSI Section 16160

AC Controls

Poles

Contacts
Normally
Open

Normally
Closed

Nema 1
General Purpose

Cat No.

0
0
0
1

Table 15.19 21WE 2-12 Pole

21WE20B*
21WE30B*
21WE40B*
21WE31B*

Open Type

Cat No.

21WE20A*
21WE30A*
21WE40A*

21WE31A*
2
0
2
0

21WE22B*
21WE60B*
21WE42B*
21WE80B*

21WE22A*

21WE60A*

21WE42A*

21WE80A*
2
4
0
2

21WE62B*
21WE44B*
21WE90B*
21WE72B*

21WE62A*

21WE44A*

21WE90A*

21WE72A*
4
0
2
4

21WE54B*
21WE100B*
21WE82B*
21WE64B*

21WE54A*

21WE100A*

21WE82A*

21WE64A*

2
3
4
4
4
6
6
8
8
8
9
9

9
10
10
10
12
12
12

2
3
4
3
2
6
4
8
6
4
9
7
5

10

8

6
12
10

8

0
2
4

21WE120B*
21WE102B*
21WE84B*

21WE120A*
21WE102A*
21WE84A*

Type 50 Hz Part No.

1 NO
1 NC
2 NO
1 NO & 1 NC

Table 15.20 Adder Decks

21WS10
21WS01
21WS20

21WS11
2 NC
2 NO
2 NC
4 NO

21WS02

21WT20

21WT02

21WT40
2 NO & 2 NC
4 NC

21WT22

21WT04

Side Mounted Light Power Pole

Top Mounted Light Power Pole

Table 15.21 2-12 Pole Dimensions

No. of
Poles A B B

1

CC

1

Dimensions in Inches (mm)

2–4

4.88

(124)

2.00
(51)

—

3.44
(87)

—

6–8

4.88

(124)

2.00
(51)

—

10–10

4.88

(124)

4.50
(114)

4.50
(114)

2.25
(57)

—

——

Compact Magnetic Contactors Lighting

Electrically Held, 20A 60Hz 480VAC Max Tungsten, 600VAC Ballast

General

Wiring Diagrams (Typical)

2-4 Pole 5-8 Pole

15

AC Controls

294 CSI Section 16160

9-16 Pole

Open Type

Optional
Power
Poles

Siemens Electrical Products and Systems

Specification Guide

AC Controls

Lighting and Heating Contactors

CLM Contactors — 30 to 200 Ampere

Figure 1 Figure 2

Table 15.22 Type CLM Magnetically Latched 30A to 200A Lighting and Heating Contactors — Open Type

Ampere
Rating

30

60

100 / 200

No. of
Poles

2–4
5
2–3
4–5
2–3
4–5

Figure
No.

1

2

Dimensions In Inches (mm)
ABCDEFG

3.31 (84)

4.19 (106)

3.31 (84)

5.06 (129)

4.62 (117)

7.25 (184)

1.65 (42)

2.09 (53)

1.65 (42)

2.53 (64)

2.31 (59)

3.62 (92)

3.95 (100)

3.48 (88)

3.95 (100)

3.48 (88)

6.00 (152) 6.62 (168) 0.38 (10) 6.75 (171) 1.88 (48)

4.38 (111) 0.23 (6)

4.61 (117)

1.50 (38)

4.94 (125)

Dimensions

Shipping
Weight in lbs. (kg)

3.3 (2)

4.5 (2)

3.3 (2)

4.5 (2)

9.3 (4)

13.0 (6)

CLM Contactors — 300 and 400 Amperes, 2- and 3-Pole

Dimensions in inches (mm) for reference purposes only.

15

AC Controls

Siemens Electrical Products and Systems

Specification Guide

295CSI Section 16160

AC Controls

Manual Starters and Switches

General

Type CLM Magnetically-Latched, 30-400A

Description

AC lighting contactors provide a safe con­venient means of local or remote switch­ing of relatively large tungsten, fluores­cent or mercury arc lamp loads.

Siemens AC lighting contactors are
designed to withstand the large initial
inrush currents of tungsten lamp loads
without the contacts welding. They are
fully rated contactors and do not require
any derating as do standard motor con­trol contactors. They are UL Listed and
CSA Certified.

Magnetic Latch Operation

A permanent magnet is built into the con­tactor structure of the 30,60,100, and
200 ampere contactors that will maintain
the contactor in its energized state indefi­nitely without using control power. When
energized, a DC current is applied that
produces a magnetic field that reinforces
the polarity of the permanent magnet,
and the contactor pulls in immediately.
The current to the coil is disconnected by
the coil clearing interlock. In order to drop
out the contactor it is necessary to apply
a field through the OFF coil in the reverse
direction to the permanent magnet. This
momentarily cancels the magnetic attrac­tion and the contactor drops out.

Cu / AI terminals are provided as stan­dard except on 30 ampere devices which
are for copper wire only.

Ballast Load:

600 volts AC, breaking all lines. Tungsten
Lamp Loads, Max. Volts:

Line-to-Line, 480 AC

15

Line-to-Neutral, 277 AC

Combination Lighting Contactors

It is desirable to install the branch circuit
protective device and lighting contactor,
combining switching and over-current
protection, in one enclosure.

AC Controls

Type CLM Magnetically-Latched, 20A
Multi-Pole

Combination lighting contactors are well
suited for industrial, highway and area
lighting applications, or where a lighting
circuit may have to be disconnected for
periodic maintenance. They may also be
used for resistance heating loads.

CLM Lighting Contactors

The CLM Lighting Contactors can be
used with metal halide, mercury vapor,
quartz halogen, tungsten, and fluorescent
lighting. They provide reliable and conve­nient lighting control in numerous applica­tions, such as industrial plants, schools,
hospitals, office buildings, shopping cen­ters, airports, stadiums, etc. The CLM’s
are listed under UL 508 with no derating
when used open or enclosed. Optional
solid-state control modules are available
to allow control of the CLM lighting con­tactors directly from energy management
systems, microprocessors, photoelectric
cells, timers, and similar control devices.
They permit programmable time schedul­ing of loads, automatic control of lighting
near windows to allow the use of natural
ambient lighting levels, and manual over­ride of all lighting circuits from any num­ber of local control stations or from a
central location. These optional modules
are integrally mounted onto the base of
the lighting contactor.

Table 15.23 20 Ampere CLM

Max. AC Voltage and Ampere Ratings

Load
Type

Tungsten
Ballast
General

Max. DC Voltage and Ampere Ratings

Load
Type

General

Poles to Load

Amps
Cont.

1 for 1-Phase

250V AC
347V AC20

3020347V AC

Poles to Load

Amps
Cont.

2 in Series

125V DC20 250V DC

2 for 1-Phase
3 for 3-Phase

—
600V AC
600V AC

3 in Series

Type CLM Electrically-Held (20-400A)

CLH Lighting Contactors

Class CLH electrically-held lighting con­tactors provide a safe convenient means
of local or remote switching for tungsten
and ballast lamp loads, mercury arc
lamps, 3 phase resistive heating, 480
volts line to line, 277 volts line to neutral.
Available in 20 ampere through 400
ampere sizes in NEMA Type 1, 3R / 12, 4
stainless steel, 4X non-metallic type
enclosures and open type. The CLH con­tactors are available in 2–12 pole 20
ampere, 3–12 pole 30 and 60 ampere
and 3 pole in 100–400 ampere sizes. UL
Listed and CSA certified.

Table 15.24
CLH Lighting Contactors

3-Phase Tungsten
and Ballast Lamp
Loads
480V Line to Line
277V Line to
Neutral

20

30

60 60

100 100 3
200 200 3
300 300 3
400 400 3

3-Phase Non­Motor Loads
3-Phase Mercury
ARC Lamps
3-Phase Resistive
Heating

20

30

No.
of
Poles

2, 3, 4,
6, 8, 10,
12

3, 6,
9 & 12

3, 6,
9 & 12

Combination Lighting and Heating
Features:

쐍 Disconnect Switch and Circuit Breaker

Types

쐍 Rugged Flange Mounted Handle
쐍 Easy Installation
쐍 Occupies Less Space
쐍 Increased Operator Protection
쐍 Room To Spare for Modifications
쐍 Class R Fuses Standard
쐍 Electrically and Mechanically Held
쐍 30–300 Amperes
쐍 UL Listed

296 CSI Section 16160

Siemens Electrical Products and Systems

Specification Guide

AC Controls

Maximum Horsepower

Table 15.25 3-Phase Magnetic
Motor Starter

460/575V230V200V

NEMA
Starter
Size

Half

Size
0
1

1

3

⁄

4

*

2

2

1

⁄

2

*

3

3

1

⁄

2

*

4

0
1

1

3

⁄

4

2

2

1

⁄

2

3

3

1

⁄

2

4

3

7.5
10
10
15
25
30
40

3

7.5
10
15
20
30
40
50

5
10
15
25
30
50
75

100

Combination Starters (NEMA Sizes 0–4)

General / Dimensions

Combination Starter With Type MCS
Disconnect Switch

Dimensions

Combination Starter With ETI
Circuit Breaker

The Type ETI circuit breaker, sometimes
called a Motor Circuit Interrupter, is
a device designed specifically for applica­tion in motor circuits. The ETI is a
magnetic only protective device designed
to provide protection against short
circuit current.

The instantaneous-only type ETI circuit
breaker employs adjustable magnetic
trip settings to allow broader application
ranges and a higher degree of motor
short circuit protection.

Type MCS Disconnect Switches

Type MCS Disconnect Switches feature
a quick-make, quick-break mechanism to
insure proper switch operation. With a
high fault withstand rating of 100 kA at
480 volts ac, when fused with Class R
rated size fuses, MCS switches meet
stringent industry standards set forth by
the automotive, petro-chemical, and pulp
and paper industries.

With visible blade contacts for ease of
inspection, removable line shields, and
front removable fuse clips and lugs,
disconnect switches are UL recognized
and CSA certified. They are available with
Class H, J, and R fuse kits for a wide
range of fused, non-fused, and over­fusing options.

Table 15.26 Magnetic Motor Starter

Dimensions in Inches (mm)

Size A B C

NEMA 1
General
Purpose
Standard
Width 0–4

NEMA 1
General
Purpose
Standard
Width 3

NEMA 12
Industrial
Use
Standard

Width 0–4
NEMA 12
Industrial
Use
Standard

1

Width 3

1

⁄2–4

⁄2–4

0–1

2, 21⁄

3

1

3

⁄2, 4

0–21⁄

3

31⁄2, 4

3

23.25

⁄

4

(591)

2

(679)

31.50
(800)

48.97
(1244)

2

(749)

34.25
(870)

48.94
(1243)

26.75

29.50

11.00
(279)

12.13
(308)

12.50
(318)

12.13
(308)

12.13

(308)

12.50
(318)

19.13
(486)

7.63
(194)

7.63
(194)

7.63
(194)

9.94
(252)

7.69
(195)

7.69
(195)

9.94
(252)

15

Siemens Electrical Products and Systems

Specification Guide

AC Controls

297CSI Section 16160

AC Controls

AmpsAmpere Rating (Open)

Measured Parameter 8

1350

7

900

6

600

5

300

4

150

3

100

2

50

1

30

0

20

00

10

AmpsAmpere Rating (Enclosed)

1215810540270135904527189

VoltsMaximum Voltage Rating

600600600600600600600600600600

HP

Squirrel Cage
Motor Maximum
Horsepower

——150754025107.531.5

kW

kW

kVA

kVA

230 V, 60 Hz

200 V, 60 Hz

4503002001005030157.531.5

380 V, 50 Hz

——3001507550251051.5

460–575 V, 60 Hz

Resistive
Heating
(1-Phase
2-Pole)

240 VAC

120 VAC

480 VAC
600 VAC

Resistive
Heating
(3-Phase
3-Pole)

Capacitor
Switching
(3-Phase)

240 VAC

120 VAC

480 VAC
600 VAC

Transformer
Switching
(1-Phase
2-Pole)

240 VAC

120 VAC

480 VAC
600 VAC

Transformer
Switching
(3-Phase
3-Pole)

AC Coil
Ratings

240 VAC

208 VAC

480 VAC
600 VAC
Overall
Inrush
Sealed

240 VAC
480 VAC
600 VAC

90060040020010050251052

햲

906030151053

햲

180120603020106

햲

36024012060402012

햲

45030015075502515

햲

1551055226178.55

햲

31521010568341710

햲

625415210105683420

햲

775515260130864325

36024016080402712

KVAR

720480320160805325
9006004002001006731

614127146.84.12.11.20.6

122815427148.14.12.41.2

2441621085427168.34.92.4

304203135683420106.23

182122814130126.33.61.8

210140944723147.24.32.1

420280188944728148.54.2

5253511350117593518115.2—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

——

—
—
—
—
—
—
—
—
—
—

—
—
—

Hz

60606050/6050/6050/6050/6050/6050/6050/60

VA

4200400029002450/2960910/1090330/410183/233101/32101/3268/87

VA

100140105115/14658/7032/3917/2112.1/16.112.1/16.110/12

MS

to 10% overvoltage,
(warm or cold coil) Total
Opening Time Includes
Arcing Time Closing Delay

Operating
Tim es
(valid for 20%
Undervoltage)

40–8030–5030–5017–6520–5015–40 20–5013–6713–6710–35

G/MS

Operating

140–24010–2010–2018–3020–4015–3515–3515–2015–2015–30

AWG

Resistance To Shock (Rectangular pulse)

———8.8/5 4.9/1010.4/5 5.8/108.6/5 4.8/109.2/5 4.8/105.7/5 9/55.7/5 9/55.5/5 3.2/10

AWG

Conductor size/phase

(4) 2/0–500MC(3) 2–600MCM(2) 4–5001-500MCM2-300MCM10–1/010–1/010–1/0(2) 14–3(2) 14–10

MILL

Auxiliary Contact Wire Size

(2) 18–12(2) 18–12(2) 18–12(2) 18–12(2) 18–12(2) 18–12(2) 18 –12(2) 18–12(2) 18–12(2) 18–12

Mechanical Life (make/break operations)

55510101010101015

Total Auxiliary Contacts Available

8888888444

Auxiliary Contact Rating A600/P600

YESYESYESYESYESYESYESYESYESYES

NEMA Size

Table 15.27 Contactor Technical Data

햲

For ratings contact Siemens.

Contactors — Non-Reversing

General

NEMA Size 1

NEMA Size 3 NEMA Size 5

Type 3TF Non-Reversing AC Contactors

Key Features

쐍 Fully NEMA Rated Sizes 00–8
쐍 Double Break Contacts
쐍 Silver Tin Oxide Contacts, Cadmium-

Free (Sizes 00–5)

쐍 Higher Locked Rotor Current Ratings,

Up to 840% (Sizes 00–5)

쐍 Arc Chutes with Arc Splitters; Fast Arc

Quenching .

쐍 Lowest Contact Bounce (2

Milliseconds or less on Most Sizes)

쐍 Touch Safe Power Terminals

(Sizes 00–3)

쐍 Touch Safe Control Terminals

(Sizes 00–5)

쐍 Snap-on 2 NO and 2 NC Auxiliary

Contacts Standard (Sizes 00–5)

쐍 Visual ON / OFF indicator

쐍 Color-Coded Coils
쐍 Fast Termination System — Wire

Funnels, Wire Stops, Screwdriver
Guide Holes, and Captive Hardware

쐍 Long Mechanical Life

— 15 Million (Size 00)
— 10 Million (Size 0–5)
— 5 Million (Size 6–8)

쐍 UL Listed and CSA Certified

15

AC Controls

298 CSI Section 16160

Siemens Electrical Products and Systems

Specification Guide

AC Controls

Magnetic Motor Starters — Full Voltage Non Reversing

Starters

Size 0– 13⁄
With ESP100 Solid State Overload

4

Key Features (Cont’d)

쐍 Rugged Industrial Design
쐍 Dual Voltage, Dual Frequency Coils
쐍 Overload Test Feature
쐍 Front Removable Auxiliary Contacts
쐍 Wide Range of Accessories
쐍 Easy Coil Access
쐍 Widest Selection of Overloads in

the Industry

쐍 Solid State, Melting Alloy, Bimetal, or

Bimetal Ambient Compensated
Overload Protection

쐍 Exclusive Half Sizes
쐍 Straight Through Wiring
쐍 Gravity Dropout
쐍 Large Silver Cadmium Contacts
쐍 UL Listed 508 File #E14900
쐍 CSA Certified File #LR6535
쐍 Universal Mounting Plate

Application

Class 14 industrial magnetic starters are
designed for across-the-line starting of
single-phase and polyphase motors.

ESP100 starters combine the rugged
characteristics of a NEMA rated contac­tor with a solid state overload which
provides phase loss protection. It offers
the industrial user greater protection
and added life for motors in heavy duty
applications. The inherent benefits of the
ESP100 result in cost savings as well.

Starter with thermal overload relays
(together with the proper heater ele­ments) help provide protection to motor
windings from harmful currents and the
resultant temperature rise that may be
caused by overloading the motor, sus­tained low line voltage, or stalled rotor.

Size 0–13⁄
With Melting Alloy Overload

4

These controls are available in NEMA
sizes 00 through 6. ESP100 starters are
available in NEMA sizes 0 through 6. In
addition to the usual NEMA starter sizes,

3

1

four exclusive Half Sizes—1

1

and 4

⁄

—are offered. These integral

2

⁄

4

, 2

1

⁄

, 3

⁄

,

2

2

sizes offer the same rugged, industrial
construction as NEMA sizes, and ensure
efficient operating performance. Half
Sizes provide a real cost savings by cut­ting down on over capacity when NEMA
sizes exceed the motor ratings.

Across the line or full voltage starting is
used when motor starting torque can be
applied safely and current inrush does
not produce an objectional voltage drop.
All starters are supplied with a NO hold­ing contact that in conjunction with an
appropriate pilot device will provide low
voltage protection or release.

Features

Size 0–6 Magnetic Starters include the
following standard features:

Molded Coil — Magnetic coils are care­fully wound and then sealed in epoxy.
Encapsulation helps seal out moisture,
promotes heat transfer, and resists elec­trical, mechanical, and thermal stresses.

Dual Voltage / Dual Frequency Coil —

Starters are available with dual voltage,
dual frequency coils. They are designed
to operate on either 50 or 60 Hertz.

ESP100 Solid State Overload Relays —

These standard features of the ESP100
provide Extra Starter Performance.

쐍 True phase loss protection; trips

within 3 seconds.

쐍 High accuracy trip curves; ± 2%

repeat trip accuracy.

쐍 Ease of use. Mount, wire and set

FLA.

쐍 Overload is self protected against

short circuits.

Size 0– 13⁄
With Bimetal Overload

4

쐍 Overload is self powered and

requires no hard wiring or separate
power source.

쐍 Simple, versatile adjustment;

over a 2:1 FLA adjustment range.
Extendable to 4:1 with looping
option.

쐍 Heaterless construction minimizes

energy costs and the costs of cabinet
ventilation or cooling.

쐍 Class 20 protection is standard. Class

10 and 30 protection are available.

쐍 Provides motor protection to

50 / 60 Hertz.

Thermal Overload Relays — Melting
alloy is supplied as standard; optional
bimetal overload relay is available.
Ambient compensated bimetal version is
also available. Bimetal types are convert­ible from manual to automatic reset and
can be furnished with standard or quick
trip heater elements. Melting alloy over­loads include a trip indicator and manual
test feature. An isolated normally open or
normally closed contact is available for
use on melting alloy overloads. Bimetal
overloads are also available with NC and
NO (SPDT) Form C contacts.

15

Siemens Electrical Products and Systems

Specification Guide

AC Controls

299CSI Section 16160

AC Controls

Table 15.28 Coil Data

Class 14
Size Watts Volts Amps

Inrush
(Open Magnet)

VA Amps

Normal
(Sealed Magnet)

VA

00 13.3 70 10

24
120
208
240
277
480
600

2.63
.59
.34
.305
.25

1.49
.121

.37
.08
.05
.045
.03
.02
.02

0
thru
2

1

⁄

2

8.6 218 25

24
120
208
240
277
480
600

9.08

1.82

1.05
.91
.79
.45
.36

1.04
.21
.12
.105
.090
.052
.042

3, 3

1

⁄

2

14 310 26

24
120
208
240
277
480
600

12.9

2.58

1.49

1.29

1.12
.646
.516

1.08
.217
.125
.108
.094
.054
.043

4

22 510 51

120
208
240
277
480
600

4.25

2.45

2.14

1.77

1.08
.85

.425
.245
.215
.183
.112
.085

4

1

⁄2, 5

63 1518 116

120
240
480
600

12.65

6.32

3.16

2.53

.96
.48
.24
.193

6

40 350 60

240
480
600

1.45
.73
.58

.25
.12
.10

Magnetic Motor Starters—Full Voltage Non Reversing

Auxiliary Equipment

쐍 Starters are available with built-in

START / STOP pushbuttons for 3-wire
control or a HAND / OFF / AUTO
selector switch for 2-wire control.

쐍 Field modifications such as auxiliary

electrical contacts, pilot lights, push­buttons, selector switches, and fuse
blocks for low voltage pilot control
are available to meet specific applica­tion requirements.

쐍 Normally open or normally closed

fifth power pole kits are available for
sizes 0 through

쐍 Transformers and pneumatic timers

can be ordered as either factory or
field modifications. In some cases
these may require a larger enclosure.

쐍 A full line of replacement parts are

available including contact kits, coils,
overload relays, and heater elements.

Size 0 through 4

The following features are characteristics
of Sizes 0 through 4.

Gravity Dropout — For added reliability,
the gravity dropout of the armature and
contacts is assisted by stainless steel
springs which help provide quick, precise
opening of the contacts. Also provides
straight through wiring.

45 Degree, Wedge Action — The 45
degree, wedge action contacts reduce
tracking and provide faster arc quench­ing. The resulting self cleaning and
reduced contact bounce mean cooler
operation and longer life for the large
silver cadmium oxide contacts.

Terminal Design — Control terminals
are self rising pressure type.

Auxiliary Contacts — Front mounted as
well as side mounted auxiliary contacts

3

1

⁄

.

4

are available. A maximum of four can be
mounted on sizes 0 through 1

3

⁄4, three

on Sizes 2 through 6.

General

15

AC Controls

300 CSI Section 16160

Siemens Electrical Products and Systems

Specification Guide

Magnetic Contactors

Table 15.29 Contactor Dimensions

Half
Size

NEMA
Size

Open

2

2

1

/2

3

3

1

/2

4
4

1

/2

5
6

Type

00
0–1

1

3

/4

Figure

AB C

Dimensions in Inches (mm)

1b
1b
1b
1b
1b
1b
2
2
2
2

1a

3.75 (95) 5.50 (140)

4.31 (109)

4.75 (121)

4.31 (109)

4.75 (121)

4.88 (124) 4.50 (114)

6.13 (156) 5.50 (140)

17.38 (441) —

22.50 (572) —

4.88 (124) 4.25 (110)

6.13 (156) 5.50 (140)

7.81 (198) 5.50 (140)

17.38 (441) —

3.19 (81)

3.75 (95)

3.75 (95)

4.00 (102)

4.00 (102)

5.06 (129)

5.06 (129)

5.75 (146)

7.88 (200)

7.88 (200)

10.00 (254)

Dimensions / Wiring Diagrams

Optional
Electrical
Contacts

Fig 1a Fig 1b Fig 2

Side Mounted

B1 Front Mounted Aux

Contact

B2 Aux Contact and 1

Aux Power Pole
Right or Left Side

Aux Contact

2 Pole Single Phase Magnetic Contactors

Size 00 Sizes 0–13/4

3 Pole 3 Phase Magnetic Contactors

Size 00 Size 0–4 Size 41/2, 5 Size 6

Sizes 2–31/2

Siemens Electrical Products and Systems

Specification Guide

15

AC Controls

301CSI Section 16160

Magnetic Contactors

Outline Dimensions

A B C

1
2, 2a
2, 2a
2, 2b
3, 3b
3, 3a
3
4
4
4
4
4
4
5
5
5
5
5
5
6

6
6
6
7
7
7
8
9
9
9
9
9

Size

NEMA 1
General
Purpose
Enclosures

NEMA 3
Weatherproof
Enclosures

Table 15.30 Enclosure Dimensions

00 9

5

/8 61/6 415/16

0–1

3

/4 11 61/4 43/8

2, 2

1

/2 131/2 713/16 411/16

3, 3

1

/2 19 111/4 61/8

42613

1

/8 79/16

4

1

/2, 5 3913/16 179/16 109/16

645

13

/16 219/16 119/16

0–1

1

/2 13 73/4 51/2

2, 2

1

/2 16 81/8 61/8

32613

1

/8 713/16

3

1

/2–4 26 131/8 713/16

4

1

/2–5 3913/16 179/16 105/8

645

13

/16 219/16 121/4

NEMA 4
Watertight
Enclosures

NEMA 4X
Watertight
Corrosion
Resistant
Enclosures

0–1

3

/4 13 73/4 55/16

0–2

1

/2 16 81/8 61/16

32613

1

/8 79/16

3

1

/2–4 26 131/8 79/16

4

1

/2, 5 3913/16 179/16 109/16

645

13

/16 219/16 119/16

0–2 11

7

/8 75/16 67/8

2 Bimetal
2

1

/2 1411/16 117/8 67/8

3, 3

1

/2 233/4 117/8 67/8

423

3

/4 117/8 91/4

0–2

1

/2 145/8 91/8 81/2

3, 3

1

/2 223/4 131/4 91/4

428

1

/2 171/2 111/4

4

1

/2, 5 43 19 121/4

0–1

3

/4 13 73/4 57/16

2, 2

1

/2 16 81/8 61/16

3–4 26 13

1

/8 79/16

4

1

/2–5 3913/16 179/16 109/16

645

13

/16 219/16 119/16

NEMA 7 & 9
Hazardous
Location
Enclosures

NEMA 12
Industrial
Use
Enclosures

Dimensions for reference, not for construction.

Fig

Enclosures

Dimensions

Figure 1

Figure 2

Figure 3 Figure 4

15

AC Controls

302 CSI Section 16160

Figure 2a

Fig 1c

Siemens Electrical Products and Systems

Specification Guide

Magnetic Contactors

Enclosures

Dimensions

Fig 3a

Fig 3b

Figure 5

Figure 6 Figure 7

Figure 8 Figure 9

15

AC Controls

Siemens Electrical Products and Systems

Specification Guide

303CSI Section 16160

AC Controls

Full Voltage, Non-Reversing Starters (NEMA Sizes 6-8)

General / Dimensions

NEMA Size 6-8, Class SXL, Full Voltage,
Non-Reversing Starters

Full Voltage Starters

3-Phase 250 to 900 HP, Non-Reversing
and Reversing 50 / 60 Hz., NEMA Sizes
6–8 Full Voltage Starters are used for
across the line starting of squirrel-cage
induction motors and the primary control
functions for wound rotor motors. In
addition, they can be used for control of
power for static or resistive loads such
as lighting and heating. They provide
the lowest cost, least maintenance, and
minimum space requirements of any
magnetic starters where inrush current
limitations do not restrict their use. UL
Listed and CSA Certified.

Overload Protection

Siemens solid-state overload relay protec­tion is provided standard for starter sizes
6 through 8. Improvements in motor
designs and manufacturing capabilities
have resulted in decreasing physical
motor size to obtain the same horse­power, making them more sensitive to
overloads. Previous motors had a higher
tolerance for overloads and made applica­tion of electromechanical overload relays
satisfactory for protection. The bigger the
motor, the more there is riding on mar­ginal protection and high rewind costs.

15

Features

쐍 Ambient Compensation from –25°C to

+55°C.

쐍 Wide Adjustable Current Tripping

Range.

쐍 Detection of Overload, Phase Loss

and Phase Unbalance.

쐍 Isolated Contacts, 1-Normally Closed

and 1-Normally Open Alarm Circuit
Contact.

쐍 Reset Button with Trip-Free Feature.
쐍 Clear Plastic Sealable Cover to

Prevent Unauthorized Tampering.

쐍 UL Listed and CSA Certified.

Starter Types
SXL: Full Voltage, across the line Non-

Reversing

SRL: Full Voltage, across the line

Reversing

SCN: Full Voltage, across the line Non-

Reversing, combination Non­Fusible

SCF: Full Voltage, across the line Non-

Reversing, combination Fusible

SCB: Full Voltage, across the line Non-

Reversing, combination Circuit
Breaker

Note:Class designation revision (effec-

tive late 1994) does not affect
starter designs.

New

Old
SXL =XL
SRL =XR
SCN = XLN
SCF = XLF
SCB = XLB

Enclosures

Construction is all welded, with an elec­trostatically applied powder epoxy baked
finish, in ANSI-61 light gray.

Type 1: General Purpose
Type 3R: Outdoor Raintight
Type 12: Dusttight — Industrial Use
Type 4: Watertight Painted Sheet

Steel

Ratings

Table 15.31 FVNR Starter Ratings

Maximum 3-Phase HP Ratings

NEMA
Size

6
7
8

at Motor Voltages

200V 230V

200
300150
450

460V 575V

400
600
900

400
600
900

Dimensions

Table 15.32 Non-Reversing and
Reversing Starters

Starter Dimensions in inches (mm)
NEMA

Size

Type A

Non-Reversing Starter
Class: SXL, SCN, SCF, SCB

Without

6

Short

7

Circuit

8

Protection
With

6

Fusible

7

Disconnect

8

With

6

Molded

7

Case

8

Breaker

Reversing Starter Class: SRL

Without

6

Short

7

Circuit

8

Protection

76 (1930)
90 (2286)
***
76 (1930)
90 (2286)
***
76 (1930)
90 (2286)
***

90 (2286)
90 (2286)
90 (2286) 44 (1118) 40 (1016)

BC

30 (762)
30 (762)

30 (762)
30 (762)

30 (762)
30 (762)

30 (762)
30 (762)

24 (610)
24 (610)

24 (610)
24 (610)

24 (610)
24 (610)

24 (610)
24 (610)

AC Controls

304 CSI Section 16160

Siemens Electrical Products and Systems

Specification Guide

AC Controls

Multi-Speed Starters (NEMA Sizes 0–4)

General / Dimensions

Full-voltage AC magnetic multi-speed
controllers are designed to control recon­nectable squirrel-cage induction motors
for operation at two, three or four differ­ent constant speeds depending on the
construction of the motor. These con­trollers are available in combination and
non-combination types.

The speed of an induction motor is a
function of the supply frequency and the
number of poles of the motor winding. To
obtain different speeds with a fixed sup­ply frequency, the number of magnetic
poles of the motor must be changed.
Characteristics at any speed are similar to
those of a single-speed motor. There are
two basic methods for providing multiple
combinations:

쐍 Separate-Winding Motors have a

separate winding for each speed.
This motor construction is relatively
simple, and a wide variety of speeds
can be selected. Separate winding
motors with delta connected motor
windings require one corner to be
opened on each unused winding.

쐍 Consequent-Pole Motors have a

single winding for two speeds. Extra
winding taps are brought out for
reconnection for different numbers of
stator poles. The controller is more
complicated, and speed range is lim­ited to a 2-to-1 ratio.

Two-speed consequent-pole motors have
one reconnectable winding. Three-speed
motors have two windings, one of which
is reconnectable. Four-speed motors
have two reconnectable windings. Each
unused delta connected winding must
have one corner open.

Torque Characteristics

Multi-speed motors are divided into three
application groups:

쐍 Constant Torque: HP output varies

directly with speed, while torque
remains constant. A constant torque
motor rated 100 HP at 1200 rpm
delivers 50 HP at 600 rpm. This type
is applicable to conveyors, mills,
dough mixers, reciprocating pumps,
and other similar loads.

쐍 Variable Torque: HP varies as square

of speed, while torque varies directly
with speed. A variable-torque motor
rated 100 HP at 1200 rpm delivers 25
HP at 600 rpm. This type is applicable
to drives having fan or centrifugal
pump characteristics.

쐍 Constant Horsepower: Motor deliv-

ers rated HP at all full-load speeds,
while torque varies inversely as
speed. This type is applicable to
cutting tools, lathes, spindles, etc.

Starter Types (NEMA Sizes 0–7)

Single Winding (Consequent Pole)
Variable Torque

Single Winding (Consequent Pole)
Constant Torque

Single Winding (Consequent Pole)
Constant Horsepower

Two Winding (Separate Winding)
Variable Torque

Two Winding (Separate Winding)
Constant Torque

Two Winding (Separate Winding)
Constant Horsepower

Note — Reversing types, reduced
voltage types, and three or four speeds
are also available.

Enclosures
Type 1: General Purpose

Type 3R: Outdoor Raintight
Type 12: Dusttight — Industrial Use
Type 4: Watertight Stainless Steel or

Watertight Painted Sheet Steel

Ratings

Table 15.33
Starter

NEMA
Starter
Size

0
1

2

3

4

3-Phase Multi-Speed

Maximum Horsepower

Half
Size

3

7.5

3

*

1

⁄

10

4

10

*

2 1⁄

15

2

25

*

3 1⁄

30

2

40

Dimensions

Table 15.34
Multi-Speed Starter

NEMA 1
General
Purpose
Enclosures

NEMA 12
Industrial
Use
Enclosures

Combination

Dimensions in Inches (mm)

Size A B C

3

0–1

⁄

4

2–3

3

0–1

⁄

4

2–3

25.75
(654)

31.50
(800)

28.50
(724)

34.25
(870)

460/575V230V200V

3

5

7.5

10

10

15

15

25

20

30

30

50

40

75

50

100

16.00
(406)

19.00
(483)

16.00
(406)

34.25
(870)

7.63
(194)

7.63
(194)

7.69
(195)

7.69
(195)

15

Siemens Electrical Products and Systems

Specification Guide

AC Controls

305CSI Section 16160

AC Controls

Table 15.35
of Reduced Voltage Motor Starting

Comparison of Various Electromechanical Methods

50%
Tap

25%

First in order of
smoothness

30 seconds
Based on NEMA
medium duty
transformers

65%
Tap

80%
Tap 2 Step Wye(Star) Delta

Reduced Voltage Starting
Autotransformer

햲

Part Winding

Characteristics

Starting current drawn from line as % of
that which would be drawn upon full
voltage starting

햳

Starting torque developed as % of that
which would be developed on full
voltage starting

Smoothness of acceleration

햵

Allowable accelerating times (typical)

햲

Closed Transition.

햳

Full voltage start usually draws between 500% and 700% of full load.

햴

Approximate values only. Exact values may be obtained from motor manufacturer.

햵

Solid state starters provide the smoothest starting characteristics.

42% 64% 33%

33%

64%

햴

45%

햴

Third in order of
smoothness

2-3 seconds
Limited by
motor design

45-60 seconds
Limited by
motor design

Second in order of
smoothness

Increased slightly with
speed

Reduced Voltage Starters — Electromechanical

General

Auto Transformer Starter

Operation

At starting, the auto transformer reduces
motor terminal voltage to 50, 65, or 80
percent of line voltage. For a timed inter­val, a segment of the transformer coil is
connected in series (as an inductor) with
the motor. Then a contactor automatically
connects the motor across the line and
shorts out the inductor.

Auto Transformer Starter

Wye Delta Starter

Operation

Initially the starter connects the motor
on a Wye connection, reducing voltage
across the winding to approximately
58 percent. Starting torque and current
is about 33 percent of across the line.
After a time delay the motor is
connected Delta.

Part Winding Starter

Operation

Part winding starters apply starting
current in timed steps to part winding
motors. Two step controllers apply volt­age through one starter to one motor
winding followed by the second starter
which connects voltage to the second
winding. The timer may be adjusted to
automatically close the second controller
at the most favorable time to minimize
voltage fluctuations.

Wye Delta Starter Part Winding Starter

Typical Speed Torque Curves

15

AC Controls

306 CSI Section 16160

Siemens Electrical Products and Systems

Specification Guide

AC Controls

Solid-State Reduced Voltage Starters

General

Class 70 / 71

Siemens-Furnas Class 70 / 71 combines
Digital Signal Processor control and sili­con controlled rectifier (SCR) technolo­gies to provide optimum AC induction
motor starting and operation. It provides
soft start, energy savings,* soft stop,*
and added protective features.

The basic controller consists of electronic
circuit boards linked via flat cable connec­tors. The main functions of the basic
assembly are to monitor the operating
parameters of the controller and to con­trol the firing sequence of the SCR’s.
The power module located below the
basic controller controls power to the
motor. The incoming and motor load
connections are made to terminal blocks
located on the top and bottom of the
power module.

The starters are available either as NEMA
Type 1, 12, or 4 enclosures. Units are
supplied with solid-state overload relays
as complete starters, or as combination
starters with fusible, non-fusible discon­nect, or thermal magnetic circuit breakers
with or without shunt trip features.
Additional options are also available.

The Class 70 / 71 is designed to operate
3 phase AC induction motors at 208 to
575 volts and 6.1 to 960 amperes at 50
or 60 Hertz.

Operation

The solid state motor controller uses sili­con controlled rectifiers (SCR’s) to control
the voltage to the motor windings. Each
SCR acts as a switch that can be turned
on with any electronic trigger signal at
any point on the voltage waveform and
turns off when the current waveform
crosses zero. Two SCR’s are used in a
back-to-back arrangement in each phase
to allow alternating current to pass to
the motor.

3-Phase Control Configuration

When SCR triggering is delayed, the volt­age to the load is reduced. This phase­controlled operation provides soft starting
with stepless acceleration. Once the
motor is running, voltage reduction can
improve the motor’s operating point at
partial load, saving energy and lowering
the reactive current.

3RW2 Phase Control

Shorted SCR

If one or more shorted SCRs are detect­ed, the starter will not energize. A fault
LED will light and if provided with a
shunt trip, the main circuit breaker will
trip.

Pump Stop

This option eliminates water hammer in
pumping systems, by giving a controlled
decel to the motor voltage. This process
allows for smooth pressure reduction
and quiet check valve operation.

Phase Loss

The controller will trip off the line if one
or more phases is lost.

햲

햲

15

햲

Available on 2000+ Starter

Siemens Electrical Products and Systems

Specification Guide

AC Controls

307CSI Section 16160

AC Controls

Class 71
MCP or Thermal Mag NEMA 1 NEMA 12

Class 71
Fusible Disconnect NEMA 1 NEMA 12

Current Rating Amps

Class 70

Dimensions In Inches (mm)

DepthHeight

NEMA 1, 12

Width DepthHeight Width

15 (381) 14 (356) — — —

6.1–22

10 (254)

25 (635) 18 (457) — — —

42–55

13 (330)

36 (914) 23 (584) — — —

68–192

6.1–22
42–55

68–105

10 (254)

53 (1346) 23 (584) — — —

248

10 (254)

54 (1372) 36 (914) — — —

361–480

11 (279)

26 (660) 16 (406) 13 (330) 26 (660) 16 (406) 13 (330)

6.1–22

26 (660) 16 (406) 13 (330) 26 (660) 16 (406) 13 (330)

42–55

36 (914) 20 (508) 11 (279) 36 (914) 20 (508) 11 (279)

68–105

46 (1168)

20 (508) 10 (254) 46 (1168) 20 (508) 10 (254)

130

53 (1346)

25 (635) 10 (254) 53 (1346) 25 (635) 10 (254)

192–248

90 (2286) 20 (508) 15 (381) 90 (2286) 20 (508) 15 (381)

361

90 (2286) 30 (762) 15 (381) 90 (2286) 30 (762) 15 (381)

480

90 (2286)

40 (1016) 15 (381) 90 (2286) 40 (1016) 15 (381)

720

90 (2286)

50 (1270) 15 (381) 90 (2286) 50 (1270) 15 (381)

36 (914) 20 (508) 11 (279) 36 (914) 20 (508) 11 (279)
46 (1168) 20 (508) 10 (254) 46 (1168) 20 (508) 10 (254)

130

53 (1346) 25 (635) 10 (254) 46 (1168) 20 (508) 10 (254)

192–248

76 (1930) 22 (559) 13 (330) 76 (1930) 22 (559) 13 (330)

361

90 (2286) 20 (508) 15 (381) 90 (2286) 30 (762) 15 (381)

480

90 (2286) 30 (762) 15 (381) 90 (2286) 30 (762) 15 (381)

720

90 (2286) 40 (1016) 15 (381) 90 (2286) 50 (1270) 15 (381)

91 (2311) 30 (762) — — —

720

15 (381)

Table 15.36 Solid-State Reduced Voltage Starters

Solid-State Reduced Voltage Starters

Dimensions

15

AC Controls

308 CSI Section 16160

Siemens Electrical Products and Systems

Specification Guide

AC Controls

Pilot Device Units

General

Pilot Device Units and
Indicator Lights — Type 3SBO

Pilot Device Options

3SBO pilot devices are built by Siemens in
two basic forms - 1) as assembled for the
most frequently used configurations, or 2)
as subassemblies for greater flexibility.

Application

3SB0 devices are heavy duty oiltight,
watertight, and dusttight (NEMA Type 4,
4X, 13, IP65). They are used in industrial
control circuits at 600V or less. 3SBO
pilot devices are available in two diame­ters, 7/8” and 1-13/64” (22 and 30 mm).

7/8” (22 mm) Mounting

The operator is inserted into the hole in
the panel from the front and twisted into
the contact block holder. The unit is then
fixed from behind by means of two set
screws which are located in the contact
block holder, preventing the unit from
working loose or twisting.

1-13/64” (30 mm) Mounting

The holder is an integral part of the actu­ator, it is inserted into the hole in the
panel from the rear and secured from the
front by means of a front ring. With the
use of a legend plate or the thrust and
trim washers, the unit becomes station­ary and will not twist or work loose.

Front Rings

Both units are supplied as standard with
metal chrome plated front rings. Black
plastic or anodized aluminum rings are
optional at no additional cost. The plastic
rings are recommended for use where
the atmosphere may be corrosive.

LED Indicating Lights (Optional)

Since LED’s consume less power, their
life is 10 to 20 times that of conventional
incandescent lamps. They also provide
greater resistance to shock and vibration.
Where lamp integrity and low mainte­nance is crucial, the 3SB0 LED indicator
is recommended.

Contact Blocks

One line of contact blocks fits both size
devices. All have parallel double break
contacts with wiping action and reliability
nibs to insure long, maintenance-free

Pushbutton Unit
7/8” (22 mm) Mounting

operation. The design is also well suited
to low energy circuits common on pro­grammable controller interfaces. Blocks
snap side by side on the holder and lock
in place. The contact block holder is avail­able in 3 and 5 position versions, elimi­nating the need for piggyback contacts
which are hard to wire and prone to fail­ure. Terminals meet the “touchsafe”
requirements of IEC standards and are
clearly marked.

Wire funnels, screwdriver guides, and
captive terminal screws make the con­tacts easy to wire while self lifting spring
washers insure that the wire stays
secure under severe vibration.

Special contact blocks are available for
solder connection to printed circuit
boards. When used with the special
operator adaptor, they present a unique
solution to multiple button operator
panels.

Pushbutton Unit
1–13/64” (30 mm) Mounting

Siemens Electrical Products and Systems

Specification Guide

15

AC Controls

309CSI Section 16160

AC Controls

Enclosed Pilot Device Stations

General

Enclosed Pilot Device Stations

P22 Series

P22 stations are NEMA Type 1 metal
enclosures and are available in 1, 2, 3,
4, and 6 hole enclosures. Completely
assembled stations are standard up
to 3 hole units. Empty enclosures are
available for 7/8” (22 mm) pilot devices,
up to six units.

PBS1 Series

Flush mounted NEMA Type 1B stainless
steel plate are available with one and two
device configurations.

3SBO2 Series

3SBO2 pushbutton stations use 7/8"
(22 mm) pilot devices. Contact blocks are
base mounted in the enclosure to permit
easy wiring and service. The stations are
available either assembled or unassem­bled. Special stations can be ordered
complete from the factory. 3SBO2 pilot
device stations are rated NEMA 1, 3R, 4,
4X, 13, and IP65. Empty enclosures are
available in molded plastic and cast alu­minum, and are supplied with conduit
adapter, contact mounting plate, and
sealing ring.

P30 Series

P30 pilot device stations use 1-13/64"
(30 mm) pilot devices and are available in
a number of configurations to meet most
applications. The stations are available
either assembled or unassembled. P30
series stations are available in NEMA 1,
3R, 4, 4X, and 13 enclosures.

Application

Class 52 oil tight pilot controls and acces­sories are designed to provide long, trou­ble free service in the most demanding
industrial applications. These controls are
oil and dust tight and meet NEMA 1, 3,
4, 12, and 13 specifications.

Push Button Operators

The operator base consists of a durable,
one piece casting equipped with a heavy
duty acrylic actuator with a stainless
steel spring, a neoprene actuator sealing
ring to prevent oil and dust from pene­trating to the contact blocks, a neoprene
gasket to seal operator mounting hole,
and a chrome plated lock nut.

P22 Series NEMA 1

Contact Blocks

Contact blocks have double break bifur­cated silver contacts which improve
contact fidelity. Contact blocks are heavy
duty rated NEMA A600 and suitable
for applications with low current draw.
Molded bodies and pushers resist arcing
and tracking. All units have stainless
steel springs that resist corrosion and
provide strong contact pressure. Captive
mounting screws speed panel assembly.

PBS1 Series

3SB02 Series

P30 Series NEMA 4X

15

AC Controls

310 CSI Section 16160

Siemens Electrical Products and Systems

Specification Guide

AC Controls

Guide Form Specifications

3-Phase Manual Starters and
1-Phase Starters

All 3-Phase manual starters and single­phase starters rated above 1 HP shall be
Siemens Class 11. They shall meet or
exceed the requirements of NEMA, UL,
and CSA. The starter must feature quick­make and quick-break contact operation
and cannot be teased into open condition.
It shall be provided with Class 20 melting
alloy overload protection, have optional
low voltage protection, padlock capability,
and be available in open, NEMA 1, 3, 4, 7
& 9, and 12 enclosures. Operating mech­anism must clearly show their position
whether unit is on, off, or tripped.

Combination Starters,
NEMA Size 0–5

Across-the-line non-reversing or reversing
combination starters for motors up to
200 HP, 460 volts shall be Type SCB
(motor circuit interrupter Type ETI), Type
SCF (fusible disconnect switch Type
MCS), or Type SCN (non-fusible discon­nect switch, Type MCS). They shall be
built in accordance with the latest NEMA
IC52 standards and shall be UL Listed.

The Type SCB and SCF shall be UL
Listed for applications requiring up to
100,000 amps withstand ratings without
the addition of current limiters. Class
“R”fuse clips to be supplied as standard.

Starters shall be equipped with three
pole double break contactor with arc
quenching system consisting of arc
chutes with arc splitter plates and a
maximum contact bounce time of 2 milli­seconds for extended contact life. The
contactor shall have a minimum locked
rotor rating of 840% FLA for 10 seconds
duration. Starter shall include a minimum
of two normally open and two normally
closed contacts as standard (one open
and one closed on reversers).

Starters shall be equipped with three-pole
overload relays. Overload relay shall be
block-type NEMA Class 20 with a test fea­ture. An isolated field mountable alarm
contact should be available. An optional
Class 10 overload relay should also be
available for factory or field installation.

The combination starter operating handle
shall always remain connected to the
breaker or switch. The operating handle
shall not be mounted in the door of the
enclosure, but to the side of the door in
the enclosure flange for safe “stand
aside” operation. Position of operating
handle will indicate “on, off, or tripped”
condition of switch or circuit breaker.

Interlock provisions shall prevent unau­thorized opening or closing of the starter
door with the disconnect in the “on”
position. Operating handle shall be suit­able for padlocking in the “off” position.

Type SXL and SRL
Non-Reversing or Reversing
Starters

Across-the-line magnetic starters for
motors up to 200 HP, 600 volts, shall be
Siemens Class 14 starters or equal. They
shall be built and tested in accordance
with the latest NEMA Standard ICS2-321
and UL Listed.

Starters shall be equipped with three­pole, double-break contactors 45° wedge
action cross arm design utilized to mini­mize arcing contact bounce. Half-sized
for specific HP ratings between NEMA
sizes should be available for space and
cost savings. Coils should snap in and
out for ease of inspection and changing.
Dual voltage coils shall be optional.
Starter shall include one normally open
auxiliary contact as standard with capabil­ity of mounting at least 3 additional.

Starters shall be equipped with three­pole overload relays. Overload relay shall
be melting alloy-type NEMA Class 20
with a test feature. An isolated field
mountable alarm contact should be avail­able. Optional Class 10 overload relay
should also be available for factory or
field installation.

Full Voltage Starters,
NEMA Size 6–8

Across-the-line reversing and non­reversing starters for motors rated above
100 HP at 230 volts, and above 200 HP
at 460 volts. Starters shall be equipped
with three-pole double-break contactors
with an arc quenching system consisting
of arc chutes with arc splitter plates and
a limited contact bounce to extended
contact life. Starter shall include a control
transformer as standard. Starter shall also
include a solid state microprocessor con­trolled overload relay with three current
transformers and shall have an adjustable
tripping class from Class 10 to Class 30
to compensate for long acceleration
times. The overload relay shall offer pro­tection from overloads, phase loss, and
phase unbalance, and also include an iso­lated alarm circuit contact and test but­ton. The starters shall be built and tested
in accordance with the latest NEMA
standard ICS 2-321 and UL Listed.

All starter enclosure types are fabricated
types, in accordance with the latest

Specifications

NEMA standards. All operating parts
can be removed quickly and easily from
the front.

Devices shall have straight through
wiring and conveniently located connec­tion points for external wires and cables
minimize installation time. Combination
starters shall be of either the fusible
switch, non-fusible switch, or molded
case circuit breaker type. Combination
fusible starters shall contain fuse clips for
Class L current limiting fuses rated
200,000 amps symmetrical interrupting
capacity, and shall have an externally
operated load break disconnect switch.
On the combination circuit breaker ver­sion, a molded case thermal magnetic
circuit breaker which has an adjustable
magnetic trip provision, shall be provided.

Reversing starters will contain two con­tactors that are electrically and mechani­cally interlocked in addition to all the
above described features. 3-phase, 250 to
900 HP non-reversing and reversing
50 / 60 Hz. NEMA size 6 through 8 full­voltage starters are used for across-the­line starting of squirrel cage induction
motors and the primary control functions
for wound rotor motors. In addition they
can be used for control of power for
static or resistive loads such as lighting
and heating. They provide the lowest
cost, least maintenance and minimum
space requirements of any magnetic
starters where inrush current limitations
do not restrict their use.

Starter Types

Non-Reversing
Class 18 Motor Circuit Interrupter (ETI)

Class 17 Fusible Switch (MCS)
Class 17 Non-Fusible Switch (MCS)
Reversing

Class 26 Motor Circuit Interrupter (ETI)
Class 25 Fusible Switch (MCS)
Class 27 Non-Fusible Switch (MCS)

Additional Starter Sizes

Oversize enclosures are available:
Class 17 and 18, NEMA sizes 0–4.

15

AC Controls

Siemens Electrical Products and Systems

Specification Guide

311CSI Section 16160

AC Controls

Guide Form Specifications

Reduced Voltage
Autotransformer Starters

Reduced voltage starters shall be
Siemens Type SAT for motors up to 900
HP, 600V. Starter shall be the closed tran­sition type providing field adjustable volt­age taps for 50, 65, and 80% of the line
voltage. The autotransformer shall be a
NEMA medium duty with internal thermal
protectors for protection of overheating
due to excessive repeat starts that
exceed the allowable number of starts on
the transformer. Incomplete sequence
protection is to be provided on all NEMA
size 6–8 starters.

Autotransformer starters shall be
equipped with three-pole double-break
contactors with an arc quenching system
consisting of arc chutes with arc splitter
plates and a maximum 2 millisecond
bounce time on sizes 2–5 to extend con­tact life. Run contactor shall be capable of
carrying a minimum of 840% full-load cur­rent for 10 seconds duration on sizes 2–5.
Starter shall include two three-pole con­tactors, to connect the autotransformer
for reduced voltage starting, and a two­pole (run) contactor to bypass the auto­transformer and connect the motor for
full voltage across-the-line running after
a predetermined starting time is reached.
A transition timer shall be provided which
can be field adjusted to set the starting
time. Starters shall be equipped with
three-pole overload relays. Overload relay
shall be a block type NEMA Class 10 with
push to test feature, phase unbalance and
phase loss protection, be field adjustable,
and have an isolated alarm circuit contact.
For NEMA Size 6–8 starters, the overload
relay shall be a 3UB solid state micro­processor controlled device and have a
field adjustable class setting from Class
10 through Class 30 to compensate for
long accelerating times.

The starters shall be built and tested in
accordance with the latest NEMA
standard ICS 2-321 and UL Listed.

Multi-Speed Starters

Type S1, S2 multi-speed starters shall be
equipped with three-pole, double-break
contactors with an arc quenching system
consisting of arc chutes with arc splitter
plates, and a maximum 2-millisecond
bounce time on sizes 2–5 to extend

15

contact life.
Starters shall be equipped with three-pole

overload relays. Overload relay shall be a
block type NEMA Class 10 with push-to­test feature, phase unbalance and phase
loss protection, be field adjustable, and
have an isolated alarm circuit contact. For
NEMA Size 6–8 starters, the overload

AC Controls

relay shall be a 3UB solid state micro­processor-controlled device and have a
field adjustable class setting from Class
10 through Class 30 to compensate for
long accelerating times. The starters shall
be built and tested in accordance with the
latest NEMA standard ICS 2-321 and UL
Listed.

Reduced Voltage Wye
Delta Starters

Wye Delta Open And Closed
Transition Starters

Wye delta starters shall be equipped with
three-pole double-break contactors with
an arc quenching system consisting of arc
chutes with arc splitter plates and a maxi­mum 2-millisecond bounce time on sizes
2–5 to extend contact life. Starter shall
include three 3-pole contactors sized per
NEMA standard ICS-2-321-7 and appropri­ate mechanical interlock.

A transition timer shall be provided which
can be field adjusted to set the starting
time. A fourth contactor will be used on
closed transition starters with transition
resistors wired in each phase. An incom­plete sequence relay shall be included to
protect the transition resistors in the
event the transition is not completed.
Wye delta starters shall be equipped with
a three-pole overload relay wired in the
phase windings.

Overload relay shall be a block type
NEMA Class 10 with push to test feature,
phase unbalance and phase loss protec­tion, be field adjustable, and have an iso­lated alarm circuit contact. For NEMA size
6–8 starters, the overload relay shall be a
3UB solid state microprocessor controlled
device and have a field adjustable class
setting from Class 10 through Class 30 to
compensate for long accelerating times.
The starters shall be built and tested in
accordance with the latest NEMA
Standard ICS 2-321 and UL Listed.

Reduced Voltage, Part
Winding Starters

Part Winding Starters

Part winding starters shall be equipped
with three pole double break contactors
with an arc quenching system consisting
of arc chutes with arc splitter plates and a
maximum 2-millisecond bounce time on
sizes 2–5 to extend contact life. Starter
shall include two three-pole contactors
mechanically interlocked. A transition timer
shall be provided which can be field adjust­ed to set the starting time. Starters shall
be equipped with three-pole overload
relays. Overload relays shall be a block
type NEMA Class 10 with push-to-test

Specifications

feature, phase unbalance and phase loss
protection, be field adjustable, and have an
isolated alarm circuit contact. For NEMA
size 6–8 starters, the overload relay shall
be a 3UB solid state microprocessor con­trolled device and have a field adjustable
class setting from Class 10 through Class
30 to compensate for long accelerating
times. The starters shall be built and test­ed in accordance with the latest NEMA
Standard ICS 2-321 and UL Listed.

Solid State Reduced Voltage Starters
Voltage Limit: To set a soft start, no

need to know full load amps regardless
of motor size (it limits inrush current dur­ing the starting period). It reduces peak
torques at near synchronous speed com­pared to current limit start.
Impulse Start: Provides breakaway
torque for high friction loads such as
crushers or mixers, it reduces motor
heating compared to ramp starts.
Shunt Trip: For positive isolation on fault
conditions; in case of 2 shorted SCR’S.
Emergency Start: With a shorted SCR,
controller should be able to soft start and
run to save the process.
Under / Over Voltage: Under over volt­age protection prevents motor and con­troller damage.
UL Ratings: UL Listed and short circuit
tested for 65 kA or higher with circuit
breakers (magnetic trip only breakers).
Short circuit tested for 100 kA with RK5
fuses.
Diagnostics: On board fault diagnostics
with selectable fault relay output.
Initialization Check: 50-millisecond
check on start; for short circuit, power
line conditions, and load connections.

Re-Start of Rotating Motors (Start on
the Fly): Starting motors with applied

BEMF (back electro magnetic force) with
no transients. No need to wait for field
to collapse or decay. Smooth reversing.
Power Outage: Ride-through power out­ages for 0.5 seconds on control power
up to 5 seconds on primary power.
SCR Thermal Protection: Temperature
and current predicting model to protect
SCR’s for all conditions by keeping semi­conductors below the rated junction
temperature.
Fully Isolated Electronics: All inputs,
relays and DC power components must
be isolated from customer connections
to provide noise immunity, 2500 volt di­electric with start.
Inputs: All inputs must operate on 120
volts including remote reset input.
Communications: Communications port
must be provided on the electronics to
interface with IBM compatible PC via
RS232 link.

312 CSI Section 16160

Siemens Electrical Products and Systems

Specification Guide