Siemens AC-21A, AC-21, AC-3 User Manual

Switch Disconnectors and
Fuses

7/2 Introduction

SENTRIC switch disconnectors

SENTRIC LD main control and
EMERGENCY-STOP switches from
16 A to 125 A

7/4 General data
7/5 Front mounting
7/7 Mounting in distribution boards
7/8 Molded-plastic enclosures
7/10 Accessories

SENTRIC K
switch disconnectors from 63 A to
1000 A

7/12 General data
7/14 Base mounting
7/15 Molded-plastic enclosures
7/16 Accessories

SENTRIC NP fuse switch disconnec­tors

7/17 General data
7/20 For power distribution
7/21 Accessories

SENTRIC KL switch disconnectors
with fuses

7/22 General data
7/24 Surface and flush mounting
7/26 Accessories

Fuses and fuse systems

7/28 Introduction
7/29 SITOR semiconductor protection fuses
7/33 NEOZED fuses
7/36 DIAZED fuses
7/39 LV HRC fuses
7/48 Cylindrical fuses

Siemens LV 10 · 2004

Switch Disconnectors and Fuses

Introduction

■

Overview

Typ e 3LD20 3LD21 3LD22 3LD25 3LD27 3LD28

SENTRIC LD main control and EMERGENCY-STOP switches from 16 A to 125 A

7

Rated uninterrupted current

at 35 °C ambient temperature

Rated operating voltage
AC-3 motor load switch

operational switching of individual motors
at 220 ... 240 V kW 3.0 4.0 5.5 11.0 18.5 22.0
at 380 ... 440 V kW 5.5 7.5 9.5 18.5 30.0 37.0
at 660/690 V kW 5.5 7.5 9.5 15.0 22.0 30.0

AC-23A main control switch,
maintenance switch

Frequent, but not operational switching of
individual motors
at 220 ... 240 V kW 4.0 5.0 6.0 11.0 18.5 22.0
at 380 ... 440 V kW 7.5 9.5 11.5 22.0 37.0 45.0
at 660/690 V kW 7.5 9.5 11.5 18.5 30.0 37.0

Switch versions

Front mounting

•Central ✓ ✓ ✓ ✓ – –

• Four-hole ✓✓✓✓✓✓
Base mounting

•Central ✓ ✓ ✓ ✓ – –

• Four-hole ✓✓✓✓✓✓
Distribution board mounting ✓✓✓✓✓✓
Molded-plastic enclosure

• Heavy-gauge threaded joints ✓✓✓✓✓✓

• Metric screws ✓ ✓ ✓ ✓ ✓ ✓

Switch accessories

4th pole (N conductor)
(leading switch-on,
delayed switch-off contact)

N terminal ✓ ✓ ✓ ✓ ✓ ✓
PE/ground terminal ✓✓✓✓✓✓

Auxiliary contacts
1 NO + 1 NC ✓ ✓ ✓ ✓ ✓ ✓
1 NO ✓✓✓✓✓✓
1 NC ✓ ✓ ✓ ✓ ✓ ✓

I

A 16 25 32 63 100 125

U

U

V 690 690 690 690 690 690

e

✓✓✓✓✓✓

7/2

Siemens LV 10 · 2004

Switch Disconnectors and Fuses

Typ e 3NP 3K

SENTRIC

Introduction

Rated uninterrupted current

at 35 °C ambient temperature

Rated operating voltage
AC-21

at 400 V ✓ ✓
at 500 V ✓✓
at 690 V ✓ ✓

AC-22

at 400 V ✓ ✓
at 500 V ✓✓
at 690 V ✓ ✓

AC-23

at 400 V ✓ ✓
at 500 V – ✓
at 690 V – ✓

Switch versions

Front mounting – ✓
Base mounting ✓✓
Busbars

•40 mm ✓ –

•60 mm ✓✓

•185 mm – –
Molded-plastic enclosure ✓ ✓

Switch accessories

4th pole (N conductor)
(leading switch-on,
delayed switch-off contact)

Auxiliary contacts
1 NO + 1 NC – ✓
1 CO ✓✓

Fuse monitoring

• with circuit-breakers ✓✓

• with electronics ✓✓

I

A 160 ... 630 63 ... 1000

U

U

V690 690

e

7

– ✓

Siemens LV 10 · 2004

7/3

7

SENTRIC Switch Disconnectors

SENTRIC LD Main Control and EMERGENCY STOP Switches from 16 A to 125 A

General data

■

Technical specifications

Standards DIN VDE 0660, IEC 60947
Switch Type

Number of contacts 3/4 3/4 3/4 3/4 3/4 3/4

Rated insulation voltage
Rated operating voltage
Rated frequency
Rated impulse withstand voltage

Rated short-time withstand current (1 s current, rms value)
Short-circuit protection, max. back-up fuse (gL)

Rated uninterrupted current I

AC-21A load-break switch Rated operating current I
AC-3 motor load switch

in-service switching
of individual motors

AC-23A main control switch
Maintenance switch
frequent, but not
in-service switching
of individual motors

Power loss per conducting path at I

Touch protection to DIN VDE 0106 Part 100 yes yes yes yes yes yes
Mechanical endurance Oper-

Operating frequency 1/h
Permissible ambient temperature °C
Isolating characteristics up to ...

Main control and EMERGENCY-STOP switch characteristics
Conductor cross-sections for main conductors

Connection type
solid or stranded 1 ... 6 1.5 ... 16 1.5 ... 16 2.5 ... 35 4 ... 50 4 ... 50
flexible with end sleeve (max.) mm

U

i

U

e

U

imp

u

Rating
at 220 V ... 240 V
at 380 V ... 440 V
at 660 V/690 V

Rating
at 220 V ... 240 V
at 380 V ... 440 V
at 660 V/690 V

e

e

1)

Auxiliary switches

Rated insulation voltage

Rated operating voltage U
Rated uninterrupted current I
Rated operating current I

Short-circuit protection, auxiliary switch, max. back-up fuse (gL/gG) A
Conductor cross-section for auxiliary conductors

Connection type Clamp connections
solid or stranded mm

Finely stranded with end sleeve mm

U

i

e

u

AC-15 at 120 V A 6 6 6 6 6 6

e

at 220 V ... 240 V A
at 380 V ... 415 V A
at 500 V A

3LD2 0 3LD2 1 3LD2 2 3LD2 5 3LD2 7 3LD2 8

V

690

AC V

690

Hz

50 ... 60

kV
A

A
A 16 25 32 63 100 125
A 16 25 32 63 100 125

kW
kW
kW

kW
kW
kW

W 0.5 1.1 1.8 4.5 7.5 12

ating
cycles

V

mm

V 500 500 500 500 500 500
AC V 500 500 500 500 500 500
A 10 10 10 10 10 10

6

340

20

3.0

5.5

5.5

4.0

7.5

7.5

100 000 100 000 100 000 100 000 100 000 100 000

50 50 50 50 50 50
–25 ... +55 –25 ... +55 –25 ... +55 –25 ... +55 –25 ... +55 –25 ... +55
690 690 690 690 690 690

yes yes yes yes yes yes

Clamp connections

2
2

4 10 10 16 35 35

3 3 3 3 3 3

1.8 1.8 1.8 1.8 1.8 1.8

1.4 1.4 1.4 1.4 1.4 1.4

10 10 10 10 10 10

2

2 ×
(0.75 ... 2.5)

2

2 ×
(0.75 ... 2.5)

690
690

50 ... 60

6

640

25

4.0

7.5

7.5

5.0

9.5

9.5

1 ×
(0.75 ... 4)
1 ×
(0.75 ... 2.5)

690
690

50 ... 60

6

640

50

5.5

9.5

9.5

6.0

11.5

11.5

1 ×
(0.75 ... 4)
1 ×
(0.75 ... 2.5)

690
690

50 ... 60

6

1260

63

11.0

18.5

15.0

11.0

22.0

18.5

1 ×
(0.75 ... 4)
1 ×
(0.75 ... 2.5)

690
690

50 ... 60

6

2000

100

18.5

30.0

22.0

18.5

37.0

30.0

1 ×
(0.75 ... 4)
1 ×
(0.75 ... 2.5)

690
690

50 ... 60

6

2000

125

22.0

37.0

30.0

22.0

45.0

37.0

1 ×
(0.75 ... 4)
1 ×
(0.75 ... 2.5)

Standards UL/CSA
Switch Type

Rated operating voltage
Rated uninterrupted current I

Conventional thermal current I
Max. rating (AC-3) 3 ∼ 120 V HP

AC motors 40 Hz ... 60 Hz 240 V HP
(HP = PS) 480 V HP

Conductor cross-sections copper cable AWG
Tightening torque Nm

1) With appropriate operating mechanisms according to DIN VDE 0113 (see
selection and ordering data).

7/4

Siemens LV 10 · 2004

U

e

u

th

Current rating
Pilot duty

600 V HP

1 ∼ 120 V HP

240 V HP

3LD2 0 3LD2 1 3LD2 2 3LD2 5 3LD2 7 3LD2 8

AC V 600 600 600 600 600 600
A 10 20 30 60 100 125

600 A 600 A 600 A – – –
P600 P600 P600

A 16 25 32 63 100 125

1 – – – – –
3 7.5 10 15 30 40

7.5 10 20 40 60 75

10 15 30 50 75 100

0.5 2 2 – – –

1.5 3 3 10 – –

18 ... 10 14 ... 8 14 ... 8 14 ... 6 12 ... 1 12 ... 1

1.5 ... 2 2 ... 2.5 2 ... 2.5 2.5 ... 3 2.5 ... 3 2.5 ... 3

SENTRIC Switch Disconnectors

SENTRIC LD Main Control and EMERGENCY STOP Switches from 16 A to 125 A

Front mounting

■

Area of application

The SENTRIC 3LD2 switches are used for switching main control
and auxiliary circuits, but they are also implemented for switch­ing three-phase induction motors and other loads for mainte­nance and repair.

They can be used as

• On-Off switches,

• EMERCENCY-STOP switches and

• Main control switches according to EN 60204-1.

■

Selection and ordering data

Number and version
of contacts

Main
contacts

Auxiliary
contactsP/AC-23A

Main control and EMERGENCY-STOP switch with rotary operating
mechanism

Rated data
at 50 Hz ... 60 Hz
380 V ... 440 V

I

u

kW A Order No. kg Order No. kg

1)2)

DT

• Lockable in 0 position with max. 3 padlocks

• IP65 degree of protection at the front

• Front plate
– 3LD2 0, 3LD2 1, 3LD2 2: 67 mm × 67 mm
– 3LD2 5 to 3LD2 8: 90 mm × 90 mm.

Four-hole
mounting

Main control and EMERGENCY-STOP switches are, in accor­dance with IEC 60947-3/

VDE 0660 Part 107 (EN 60947-3)
ually operated switch disconnectors and comply with the isola­tion conditions and the requirements of machine guideline
EN 60204-1.

PS* Weight

per PU
approx.

center-hole mount-

DT

ing
Ø 22.5 mm

, man-

PS* Weight

per PU
approx.

7

3– 7.516}

3LD2 203-0TK53

Actuator
black 51 51
red/yellow (EMERGENCY-STOP)

1) Screw fixing or snap-on mounting on 35 mm rail is standard.

2) A terminal cover for the infeed side is included in the scope of supply.

3) 4th contact as N conductor to be ordered separately, see Accessories.

3 + N – 7.5 16 }

9.5 25 }

11.5 32 }
22 63 } 3LD2 504–0TK.. 1 unit 0.424 A 3LD2 555–0TK.. 1 unit 0.443

37 100 }
45 125 A

9.5 25 A

11.5 32 A
22 63 } 3LD2 504–0TK.. 1 unit 0.424 A 3LD2 555–0TK.. 1 unit 0.443

37 100 }

45 125 A 3LD2 804–0TK.. 1 unit 0.503 –

3LD2 003–0TK.. 1 unit 0.207 A 3LD2 054–0TK.. 1 unit 0.215
3LD2 103–0TK.. 1 unit 0.206 A 3LD2 154–0TK.. 1 unit 0.215
3LD2 203–0TK.. 1 unit 0.206 A 3LD2 254–0TK.. 1 unit 0.214

3LD2 704–0TK.. 1 unit 0.501 –
3LD2 804–0TK.. 1 unit 0.503 –

3LD2 003–1TL.. 1 unit 0.217 A 3LD2 054–1TL.. 1 unit 0.230
3LD2 103–1TL.. 1 unit 0.243 A 3LD2 154–1TL.. 1 unit 0.256
3LD2 203–1TL.. 1 unit 0.243 A 3LD2 254–1TL.. 1 unit 0.260

3)

+

} 3LD9 250–0B 1 unit 0.079 } 3LD9 250–0B 1 unit 0.079

3LD2 704–0TK.. 1 unit 0.501 –

3)

+

} 3LD9 280–0B 1 unit 0.101

3)

+

} 3LD9 280–0B 1 unit 0.101

3)

+

>>

53 53

* This quantity or a multiple thereof can be ordered.

Siemens LV 10 · 2004

7/5

SENTRIC Switch Disconnectors

SENTRIC LD Main Control and EMERGENCY STOP Switches from 16 A to 125 A

Front mounting

7

Number and version
of the contacts

Main
contacts

Auxiliary
contactsP/AC-3P/AC-

Rated data
at 50 Hz ... 60 Hz
380 V ... 440 V

I

u

23A

kW kW A kg

Order No. PS* Weight

DT

Main control and EMERGENCY-STOP switch with rotary operating
mechanism

• IP65 degree of protection at the front

6– 7.59.525A3LD2 103–3VK.. 1 unit 0.380

3LD2 103-3VK53

9.511.532 A

18.5 22.0 63 A

3LD2 203–3VK.. 1 unit 0.381
3LD2 504–3VK.. 1 unit 0.854

Selector switch with knob mechanism, knob cannot be locked

• black actuator, IP65 degree of protection at the front

3 – 7.5 9.5 25 A 3LD2 123–7UK01 1 unit 0.374

9.5 11.5 32 A

3LD2 123-7UK01

Actuator
black 51
red/yellow (EMERGENCY-STOP)

18.5 22.0 63 A

30.0 37.0 100 A

3LD2 223–7UK01 1 unit 0.378
3LD2 524–7UK01 1 unit 0.841
3LD2 724–7UK01 1 unit 1.060

>

per PU
approx.

53

7/6

Siemens LV 10 · 2004

* This quantity or a multiple thereof can be ordered.

SENTRIC Switch Disconnectors

SENTRIC LD Main Control and EMERGENCY STOP Switches from 16 A to 125 A

Mounting in distribution boards

Number and version
of contacts

Main
contacts

Auxiliary
contactsP/AC-23A

Rated data
at 50 Hz ... 60 Hz
380 V ... 440 V

I

u

kW A kg

Order No. PS* Weight

DT

ON/OFF and EMERGENCY-STOP switches with masking plate and se­lector switch

• For mounting in a distribution board

• For screw-fixing and snapping onto a 35 mm rail

• Lockable in 0 position with max. 2 padlocks

• IP44 degree of protection at the front

3– 7.516A

9.5 25 A

11.5 32 A
22 63 A 3LD2 530–0TK.. 1 unit 0.311
37 100 A 3LD2 730–0TK.. 1 unit 0.379
45 125 A

3LD2 530-0TK13

Actuator
black 11
red/yellow (EMERGENCY-STOP)

1) 4th contact as N-conductor to be ordered separately; see Accessories for
base mounting and distribution board mounting.

3 + N – 7.5 16 A 3LD2 030–1TL.. 1 unit 0.183

9.5 25

11.5 32 A 3LD2 230–0TK.. 1 unit 0.168

22 63 A 3LD2 530–0TK.. 1 unit 0.311

37 100 A 3LD2 730–0TK.. 1 unit 0.379

45 125 A 3LD2 830–0TK.. 1 unit 0.379

3LD2 030–0TK.. 1 unit 0.169
3LD2 130–0TK.. 1 unit 0.171
3LD2 230–0TK.. 1 unit 0.168

3LD2 830–0TK.. 1 unit 0.379

A 3LD2 130–0TK.. 1 unit 0.171

1)

+

} 3LD9 220–0C 1 unit 0.039

1)

+

} 3LD9 220–0C 1 unit 0.039

1)

+

} 3LD9 250–0C 1 unit 0.080

1)

+

} 3LD9 280–0C 1 unit 0.102

1)

+

} 3LD9 280–0C 1 unit 0.102

>

per PU
approx.

7

13

* This quantity or a multiple thereof can be ordered.

Siemens LV 10 · 2004

7/7

SENTRIC Switch Disconnectors

SENTRIC LD Main Control and EMERGENCY STOP Switches from 16 A to 125 A

Molded-plastic enclosures

7

3LD2 261-0TB13

Number and version
of contacts

Main
contacts

Auxiliary
contactsP/AC-23A

Rated data
at 50 Hz ... 60 Hz
380 V ... 440 V

I

u

kW A kg

Order No. PS* Weight

DT

Main control and EMERGENCY-STOP switches

• With N or PE/ground terminal

• Heavy-gauge threaded joints

• Lockable in 0 position with max. 3 padlocks

• IP 65 degree of protection at the front

3– 7.516

9.5 25 A

11.5 32 A
22 63
37 100 A 3LD2 7630TB.. 1 unit 2.000
45 125 A

3 + N – 7.5 16

9.5 25

11.5 32 A 3LD2 261–1TC53 1 unit 0.444
22 63 A 3LD2 562–1TC53 1 unit 0.863
37 100 A 3LD2 7630TB.. 1 unit 2.000

45 125 A 3LD2 8630TB.. 1 unit 2.000

–
3LD2 161–0TB.. 1 unit 0.415
3LD2 261–0TB.. 1 unit 0.420

A 3LD2 562–0TB.. 1 unit 0.801

3LD2 8630TB.. 1 unit 2.000
–

A 3LD2 161–1TC.. 1 unit 0.439

1)

+

} 3LD9 280–0C 1 unit 0.102

1)

+

} 3LD9 280–0C 1 unit 0.102

Main control and EMERGENCY-STOP switches

• With N or PE/ground terminals

• metric screwed glands

• Lockable in 0 position with max. 3 padlocks

• IP65 degree of protection at the front

per PU
approx.

3– 7.516A

9.5 25 A

11.5 32 A
22 63
37 100 A 3LD2 7660TB.. 1 unit 1.890
45 125 A

3 + N – 7.5 16 A

9.5 25

11.5 32 A 3LD2 264–1TC53 1 unit 0.500

3LD2 164-0TB53

Actuator
black 51
red/yellow (EMERGENCY-STOP)

1) 4th contact as N-conductor to be ordered separately; see Accessories for
base mounting and distribution board mounting.

22 63 A 3LD2 565–1TC53 1 unit 0.960
37 100 A 3LD2 7660TB.. 1 unit 1.890

45 125 A 3LD2 8660TB.. 1 unit 1.890

3LD2 064–0TB.. 1 unit 0.463
3LD2 164–0TB.. 1 unit 0.463
3LD2 264–0TB.. 1 unit 0.465

A 3LD2 565–0TB.. 1 unit 0.906

3LD2 8660TB.. 1 unit 1.890
3LD2 064–1TC.. 1 unit 0.453

A 3LD2 164–1TC.. 1 unit 0.487

1)

+

} 3LD9 280–0C 1 unit 0.102

1)

+

} 3LD9 280–0C 1 unit 0.102

>

53

7/8

Siemens LV 10 · 2004

* This quantity or a multiple thereof can be ordered.

SENTRIC Switch Disconnectors

SENTRIC LD Main Control and EMERGENCY STOP Switches from 16 A to 125 A

Molded-plastic enclosures

3LD2 165-3VB53

Number and version of
contacts

Main
contacts

Auxiliary
contactsP/AC-3P/AC-23A

Rated data
at 50 Hz ... 60 Hz
380 V ... 440 V

I

u

kW kW A kg

DT Order No. PS* Weight

per PU
approx.

Main control and EMERGENCY-STOP switches with rotary operating mechanism

• metric screwed glands

• With N or PE/ground terminals

• IP65 degree of protection

6 – 7.5 9.5 25 A

9.5 11.5 32 A

18.5 22.0 63 A

3LD2 165–3VB.. 1 unit 0.880
3LD2 265–3VB.. 1 unit 0.878
3LD2 566–3VB.. 1 unit 2.100

Selector switch with knob mechanism, knob not lockable

• metric screwed glands

• With N or PE/ground terminals

• Black actuator

3– 7.59.525A

9.5 11.5 32 A

18.5 22.0 63 A

30.0 37.0 100 A

3LD2 165–7UB01 1 unit 0.888
3LD2 265–7UB01 1 unit 0.888
3LD2 566–7UB01 1 unit 2.100
3LD2 766–7UB01 1 unit 2.330

7

3LD2 165-7UB01

Actuator
black 51
red/yellow (EMERGENCY-STOP)

>

53

* This quantity or a multiple thereof can be ordered.

Siemens LV 10 · 2004

7/9

7

SENTRIC Switch Disconnectors

SENTRIC LD Main Control and EMERGENCY STOP Switches from 16 A to 125 A

Accessories

■

Selection and ordering data

DT 3LD2 0 PS* Weight

For front mounting

4th contact
(N conductor)

for front mounting
leading switch-on,
delayed switch-off

3LD9 2.0-0B 3LD9 2.0-2B

3LD9 2.0-3B 3LD9 2.0-5B

N or PE/ground terminal

continuous

Auxiliary switch

for mounting on left and/or right
delayed switch-off,
leading switch-on
1 NO + 1 NC } 3LD9 220–5B 1 unit 0.046 } 3LD9 220–5B 1 unit 0.046
1 NO A
1 NC A

Auxiliary switch

for mounting on left and/or right
leading switch-on
with gold-plated contacts
for SIMATIC request A 3LD9 220–3B 1 unit 0.029 A 3LD9 220–3B 1 unit 0.029

Labelling plate

English/German

}

A

For front and base mounting

Rotary operating mechanism

lockable in 0 position
with max. 3 padlocks

For four-hole mounting

black A 3LD9 224–1B 1 unit 0.072 A 3LD9 224–1B 1 unit 0.072
red/yellow A

3LD9 286-1A

3LD9 2.4-1A

3LD9 2.1-0A 3LD9 2.1–-2A

For center-hole mounting

black A 3LD9 224–1D 1 unit 0.080 A 3LD9 224–1D 1 unit 0.080
red/yellow A

Labelling plate

English/German

Terminal cover as
additional touch protection

Can be snapped onto top and
bottom
1-pole (1 pack = 100 units) A 3LD9 201–2A 1 unit 0.007 A 3LD9 221–2A 1 unit 0.004
3-pole (1 pack = 4 units)
4-pole (1 pack = 4 units) A

A

For base mounting and for distribution board mounting

4th contact
(N conductor)

for mounting on the rear
leading switch-on,
delayed switch-off

3LD9 2.0-0C

3LD9 2.0-2C

N or PE/ground terminal

continuous

Auxiliary switch

for mounting on the left
and/or right
delayed switch-on,
leading switch-off
1 NO + 1 NC } 3LD9 220–5C 1 unit 0.046 } 3LD9 220–5C 1 unit 0.046
1 NO A
1 NC A

Labelling plate

English/German

}

A

per PU
approx.

Order No. kg Order No. kg

– } 3LD9 220–0B 1 unit 0.039

3LD9 200–2B 1 unit 0.030 } 3LD9 220–2B 1 unit 0.036

3LD9 220–3B 1 unit 0.029 A 3LD9 220–3B 1 unit 0.029
3LD9 220–4B 1 unit 0.029 A 3LD9 220–4B 1 unit 0.029

3LD9 286–1A 1 unit 0.005 A 3LD9 286–1A 1 unit 0.005

3LD9 224–3B 1 unit 0.075 A 3LD9 224–3B 1 unit 0.075

3LD9 224–3D 1 unit 0.081 A 3LD9 224–3D 1 unit 0.081
3LD9 286–1A 1 unit 0.005 A 3LD9 286–1A 1 unit 0.005

– A 3LD9 221–0A 1 unit 0.007
3LD9 201–1A 1 unit 0.007 –

– } 3LD9 220–0C 1 unit 0.039

3LD9 200–2C 1 unit 0.032 } 3LD9 220–2C 1 unit 0.037

3LD9 220–3C 1 unit 0.029 A 3LD9 220–3C 1 unit 0.029
3LD9 220–4C 1 unit 0.030 A 3LD9 220–4C 1 unit 0.030

3LD9 286–1A 1 unit 0.005 A 3LD9 286–1A 1 unit 0.005

DT

3LD2 1 and
3LD2 2

PS* Weight

per PU
approx.

7/10

Siemens LV 10 · 2004

* This quantity or a multiple thereof can be ordered.

SENTRIC Switch Disconnectors

SENTRIC LD Main Control and EMERGENCY STOP Switches from 16 A to 125 A

Accessories

DT 3LD2 5 PS* Weight

For mounting on the front

3LD9 2.0-0B 3LD9 2.0-2B

3LD9 2.0-3B 3LD9 2.0-5B

4th contact
(N conductor)

for front mounting
leading switch-on,
delayed switch-off

N or PE/ground terminal

continuous

Auxiliary switch

for mounting on the left and/or
right
delayed switch-on,
leading switch-off
1 NO + 1 NC A 3LD9 250–5B 1 unit 0.047 A 3LD9 280–5B 1 unit 0.047
1 NO A
1 NC A

Auxiliary switch

for mounting on left and/or right
delayed switch-on,
with gold-plated contacts
for SIMATIC request A 3LD9 220–3B 1 unit 0.029 A 3LD9 220–3B 1 unit 0.029

Labelling plate

English/German

}

}

A

For front and base mounting

Rotary operating mechanism

lockable in 0 position
with max. 3 padlocks

For four-hole mounting

black A 3LD9 284–1B 1 unit 0.154 A 3LD9 284–1B 1 unit 0.154
red/yellow A

3LD9 286-1A

3LD9 2.4-1A

3LD9 2.1-0A 3LD9 2.1-2A

For center-hole mounting

black A 3LD9 284–1D 1 unit 0.155 –
red/yellow A 3LD9 284–3D 1 unit 0.155 –

Labelling plate

English/German

Terminal cover as
additional touch protection

For snapping on at top and
bottom
1-pole (1 pack = 100 units) A 3LD9 251–2A 4 units 0.125 A 3LD9 281–2A 1 unit 0.006
3-pole (1 pack = 4 units) A
4-pole (1 pack = 4 units) – –

A 3LD9 286–1A 1 unit 0.005 A 3LD9 286–1A 1 unit 0.005

For base mounting and for distribution board mounting

3LD9 2.0-0C

3LD9 2.0-2C

4th contact
(N conductor)

for mounting on the rear
leading switch-on
delayed switch-off

N or PE/ground terminal

continuous

Auxiliary switch

for mounting on the left
and/or right
delayed switch-on,
leading switch-off
1 NO + 1 NC A 3LD9 250–5C 1 unit 0.047 A 3LD9 280–5C 1 unit 0.047
1 NO A
1 NC A

Labelling plate

English/German

}

}

A 3LD9 286–1A 1 unit 0.005 A 3LD9 286–1A 1 unit 0.005

3LD2 7 and

per PU
approx.

Order No. Order No.

3LD9 250–0B 1 unit 0.079 } 3LD9 280–0B 1 unit 0.101

3LD9 250–2B 1 unit 0.072 } 3LD9 280–2B 1 unit 0.092

3LD9 250–3B 1 unit 0.029 A 3LD9 280–3B 1 unit 0.030
3LD9 250–4B 1 unit 0.028 A 3LD9 280–4B 1 unit 0.029

3LD9 286–1A 1 unit 0.005 A 3LD9 286–1A 1 unit 0.005

3LD9 284–3B 1 unit 0.152 A 3LD9 284–3B 1 unit 0.152

3LD9 251–0A 1 unit 0.009 –

3LD9 250–0C 1 unit 0.080 } 3LD9 280–0C 1 unit 0.102

3LD9 250–2C 1 unit 0.073 } 3LD9 280–2C 1 unit 0.093

3LD9 250–3C 1 unit 0.030 A 3LD9 280–3C 1 unit 0.029
3LD9 250–4C 1 unit 0.029 A 3LD9 280–4C 1 unit 0.029

DT

3LD2 8

PS* Weight

per PU
approx.

7

* This quantity or a multiple thereof can be ordered.

Siemens LV 10 · 2004

7/11

7

SENTRIC Switch Disconnectors

SENTRIC K Switch Disconnectors from 63 A to 1000 A

General data

■

Technical specifications

Standards IEC 60947-1, IEC 60947-3, VDE 0660 Part 107
Typ e
Rated uninterrupted current I
Continuous thermal current I
Rated insulation voltage
Rated impulse withstand voltage
Rated operating voltage

AC 50 Hz/60 Hz V 690
DC V

Rated short-circuit making capacity
with back-up fuses

at AC 50 Hz/60 Hz 690 V kA (peak value) 220 220 220 220 220 220 220

Rated conditional short-circuit current with series­connected fuses

at AC 50 Hz/60 Hz 690 V kA (rms value) 100 100 100 100 80 80 50
Max. rated current I

Permissible let-through current of the fuses kA
Maximum permissible let-through I2t value kA2s 55 55 223 223 1000 1000 2600

Permissible let-through current of a series-con­nected circuit-breaker

at AC 50 Hz/60 Hz 690 V kA (peak value) 7 8 8 15 25 25 32

Rated short-circuit making capacity
without fuses

at AC 50 Hz/60 Hz 690 V kA (peak value) 7 7 7 9 20 25 35
Switching capacity (infeed top or bottom)
at AC 400 V

Breaking current I
Rated operating current I
AC-21A, AC-22A, AC-23A A
Motor switching capacity at AC-23A kW 30 40 65 80 132 200 350

At AC 500 V
Breaking current I
Rated operating current I
AC-21A, AC-22A
AC-23A
Motor switching capacity at AC-23A kW 40 50 90 110 185 280 280

at AC 690 V
Breaking current I
Rated operating current I
AC-21A, AC-22A
AC-23A
Motor switching capacity at AC-23A kW 50 50 110 150 220 375 375

at DC 440 V (3 conducting paths connected in series)
Breaking current I
Rated operating current I

Rated short-time current (1 s current) kA (rms value)
Permissible load

depending on the ambient temperature for open-type
installation in switchboards (e.g. 8NA1) in switchgear
cubicles or switchgear racks at
35 °C A 63 80 125 160 250 400 630
40 °C A
45 °C A
50 °C A
55 °C A
60 °C A

Permissible ambient temperature °C

1) Technical specifications for CSA approval on request.

2) Configuring note: max. permissible operating temperature at connections
100 °C.

3) With 3KA58 for operation –25 °C ... +35 °C, 570 A at 55 °C.

4) Only for 3NA38, 3NA32 or 3ND18, 3ND12 fuses (105 kA/50 kA for others).

5) 3ND1 switchgear protection fuses.

6) AC-23B.

7) At 440 V L/R = 4 ms, at 220 V L/R = 15 ms.

8) At 440 V DC-22A, at 220 V DC-23A.

4

)

4

)

of the fuses A 63 80 160 160 400 400 630

n

(p.f. = 0.35)

c

(p.f. = 0.35)

c

(p.f. = 0.35)

c

(L/R = 15 ms)

c

u

2)

th

U

i

U

U

e

e

e

e

imp

e

at

at

at

at DC-23A A 63 63 125 160 250

A 63 80 125 160 250 400 630
A 63 80 125 160 250 400 630
V 690 690 1000 1000 1000 1000 1000
kV 6 6 8 8 8 8 8

A (rms value)

A (rms value)

A
A

A (rms value)

A
A

A

3KA50 3KA51 3KA52 3KA531)3KA55 3KA571)3KA58

440 (3 conducting paths series-connected),
220 (2 conducting paths series-connected)

8 10 17 17 30

500 650 1000 1280 2000 3200 5040

63 80 125 160 250 400 630

500 640 1000 1280 2000 3200 3200

63
63

500 500 1000 1280 2000 3200 3200

63
63

250 260 500 640 1000

2.5 2.5 3.2 3.2 8 11 15

63 80 125 160 250 400 620
63 80 125 160 250 400 600
63 80 125 160 250 400 580
63 80 125 160 250 400 560
63 80 125 160 250 400 550

–25 ... +55 for operation, –50 ... +80 for storage

80
80

80
63

125

125
125

160
160

160
160

5)

250
250

250
250

7)

8)

3)

5)

30

400
400

400
400

1600 1600
400 400

40

630
400

630
400

3)

3)

5)

6)

6)

6)

7/12

Siemens LV 10 · 2004

SENTRIC Switch Disconnectors

SENTRIC K Switch Disconnectors from 63 A to 1000 A

General data

Standards IEC 60947-1, IEC 60947-3, VDE 0660 Part 107
Typ e
Mechanical endurance operations
Required operating torque Nm
Degree of protection
Power loss of the switch at I
Main conductor connection

Busbar systems, max. dimensions (w × t) mm × mm 25 × 9 25 × 9 45 × 10 45 × 10 40 × 12 40 × 12 40 × 15
Cable lug, max. conductor cross-section (stranded) mm

Tightening torque Nm
Terminal screws

PE/ground-conductor connection

Flat bars mm × mm – – – – 20 × 2.5 20 × 2.5 20 × 2.5
Cable lug, max. conductor cross-section (stranded) mm

4th pole

Rated uninterrupted current I
Rated operating current I
Main conductor connection
Flat bars
Cable lug max. conductor cross-section (stranded)

Auxiliary switch 1 NO + 1 NC (accessory)

Max. number to be plugged 1 1 2 2 2 2 2
Rated operating current I

/AC-12

I

e

/AC-15 at Ue = 220 V/230 V

I

e

/AC-15 at Ue = 380 V/400 V

I

e

/AC-15 at Ue = 500 V

I

e

/AC-15 at Ue = 690 V

I

e

Rated operating current Ie at DC

/DC-13 at Ue = 24 V

I

e

/DC-13 atUe = 48 V

I

e

/DC-13 at Ue = 110 V

I

e

/DC-13 at Ue = 220 V

I

e

/DC-13 at Ue = 440 V

I

e

Connection
solid
flexible with end sleeve

Weight

Complete version kg 1.324 1.322 2.560 2.560 5.400 6.401
Basic version kg

1) Technical specifications for CSA approval on request.

th

u

at AC-21A, AC 690 V A – – – 125 400 400 400

e

at AC 50 Hz/60 Hz

e

W 7 12 22 22 33 72 170

2

2

A – – – 125 400 400 400

mm × mm

2

mm

A
A
A
A
A

A
A
A
A
A

2

mm

2

mm

3KA50 3KA51 3KA52 3KA531)3KA55 3KA571)3KA58

15000 15000 15000 15000 12000 12000 12000
3 3 7.5 7.5 16 16 16
IP00/IP20 (from operator side, with busbar and terminal covers)

35 35 70 120 150 2 × 150

6 ... 7.5 6 ... 7.5 7 ... 10 18 ... 22 35 ... 45 35 ... 45 35 ... 45
M 6 M 6 M 6 M 8 M 10 M 10 M 10

– – – – 70 120 120

–
–

10

6
4

2.5

21.2

10

4

1.2

0.4

0.2

2 × (1 ... 2.5)
2 × (0.5 ... 1.5)

1.040 1.039 2.200 2.200 5.360 5.963

–
–

–
–

15 × 37025 × 4

240

or
1 × 240

25 × 4
240

2 × 240

25 × 4
240

7

Siemens LV 10 · 2004

7/13

7

SENTRIC Switch Disconnectors

SENTRIC K Switch Disconnectors from 63 A to 1000 A

Base mounting

■

Area of application

SENTRIC KA switch disconnectors are implemented as main
control switches and EMERGENCY-STOP switches for normal
switching duty and isolation of main circuits and auxiliary cir­cuits. Another area of application is the switching of three-phase
induction motors and other loads for maintenance and repair
work.

■

Selection and ordering data

All switch disconnectors to the IP00 degree of protection
Conductor connecting screws are generally included in the scope of supply.

Rated

DT Complete

uninter­rupted
current

I

u

A Order No. Order No. kg Order No. kg

version with
8UC6 door-cou­pling rotary oper­ating mechanism
(black handle)

3-pole for motor loads

3KA53 30–1AE01

63 B

80 B
125 B
160 B

250 B
400 B
630 B

3KA50 30–1EE01 1 unit 1.440 } 3KA50 30–1AE01 1 unit 0.946 } 8UC61 21–3BB10 1 unit 0.353
3KA51 30–1EE01 1 unit 1.400 } 3KA51 30–1AE01 1 unit 0.918 } 8UC61 21–3BB10 1 unit 0.353
3KA52 30–1EE01 1 unit 2.380 } 3KA52 30–1AE01 1 unit 1.880 } 8UC62 22–3BB20 1 unit 0.426
3KA53 30–1EE01 1 unit 2.420 } 3KA53 30–1AE01 1 unit 2.020 } 8UC62 22–3BB20 1 unit 0.426

3KA55 30–1EE01 1 unit 5.470 } 3KA55 30–1AE01 1 unit 4.510 } 8UC63 23–3BB30 1 unit 0.999
3KA57 30–1EE01 1 unit 5.550 } 3KA57 30–1AE01 1 unit 4.630 } 8UC63 23–3BB30 1 unit 0.999
3KA58 30–1EE01 1 unit 6.120 } 3KA58 30–1AE01 1 unit 5.150 } 8UC63 23–3BB30 1 unit 0.999

3-pole for power distribution

3KA53 30–1AE01

63 B

80 B
125 B
160 B

250 B
400 B
630 B

3KA50 30–1EE01 1 unit 1.440 } 3KA50 30–1AE01 1 unit 0.946 } 8UC61 21–3BB10 1 unit 0.353
3KA51 30–1EE01 1 unit 1.400 } 3KA51 30–1AE01 1 unit 0.918 } 8UC61 21–3BB10 1 unit 0.353
3KA52 30–1EE01 1 unit 2.380 } 3KA52 30–1AE01 1 unit 1.880 } 8UC62 22–3BB20 1 unit 0.426
3KA53 30–1EE01 1 unit 2.420 } 3KA53 30–1AE01 1 unit 2.020 } 8UC62 22–3BB20 1 unit 0.426

3KA55 30–1EE01 1 unit 5.470 } 3KA55 30–1AE01 1 unit 4.510 } 8UC63 23–3BB30 1 unit 0.999
3KA57 30–1EE01 1 unit 5.550 } 3KA57 30–1AE01 1 unit 4.630 } 8UC63 23–3BB30 1 unit 0.999
3KA58 30–1EE01 1 unit 6.120 } 3KA58 30–1AE01 1 unit 5.150 } 8UC63 23–3BB30 1 unit 0.999

4-pole1) for power distribution

63 B

80 B
125 B
160 B

250 B
400 B

3KA53 40–1AE01

1) The nominal values are reduced in the case of strong harmonics due to fre­quency converter operation.

630 C

3KA50 40–1EE01 1 unit 2.490 B 3KA50 40–1AE01 1 unit 2.100 } 8UC62 22–3BB20 1 unit 0.426
3KA51 40–1EE01 1 unit 2.540 B 3KA51 40–1AE01 1 unit 2.110 } 8UC62 22–3BB20 1 unit 0.426
3KA52 40–1EE01 1 unit 2.490 B 3KA52 40–1AE01 1 unit 2.090 } 8UC62 22–3BB20 1 unit 0.426
3KA53 40–1EE01 1 unit 2.450 B 3KA53 40–1AE01 1 unit 2.240 } 8UC62 22–3BB20 1 unit 0.426

3KA55 40–1EE01 1 unit 6.030 C 3KA55 40–1AE01 1 unit 5.040 } 8UC63 23–3BB30 1 unit 0.999
3KA57 40–1EE01 1 unit 5.150 B 3KA57 40–1AE01 1 unit 5.190 } 8UC63 23–3BB30 1 unit 0.999
3KA58 40–1EE01 1 unit 6.590 B 3KA58 40–1AE01 1 unit 5.740 } 8UC63 23–3BB30 1 unit 0.999

PS* Weight

per PU
ap­prox.

Main control switches and EMERGENCY-STOP switches are
hand-operated switch disconnectors acc. to IEC 60947-3 and
VDE 0660 Part 107 (EN 60947-3) and comply with the isolation
conditions and the requirements of machine guideline
EN 60204-1.

Basic switch

DT

version
without handle

PS* Weight

per PU
ap­prox.

8UC6 EMER-

DT

GENCY-STOP
door-coupling
rotary operating
mechanism (red
handle, yellow
indicator plate)

PS* Weight

per PU
ap­prox.

7/14

Siemens LV 10 · 2004

* This quantity or a multiple thereof can be ordered.

SENTRIC K Switch Disconnectors from 63 A to 1000 A

■

Benefits

• Lockable with 3 padlocks

• Generous terminal compartment

• IP65 degree of protection

• Maintenance-free

• Easy to install.

■

Functions

The concept and mechanical construction of these switches are
designed for reliable function even under the harshest condi­tions. In emergencies, every second counts, and our switches
allow immediate isolation.

■

Selection and ordering data

Main
contacts

Main control switch complete with rotary operating mechanism, black

3 – 65 110 125 35/35

8HP27..

1) With PE/ground/ N terminal.

2) For a 5th conductor another terminal of this type can be installed.

3) For ambient temperatures up to 35 °C.

EMERGENCY-STOP switch complete with rotary operating mechanism, red/yellow

3 – 65 110 125 35/35

Auxiliary
contacts

P/AC-23 A I
at
380 ... 400 Vat660/690 V

kW kW A mm

80 150 160 120/70

132 220 250 150/70
200 375 400 2 × 150 or 1 × 240/120 C

350 375 630 2 × 240/120 C
315 315 800

80 150 160 120/70

132 220 250 150/70
200 375 400 2 × 150 or 1 × 240/120 C

350 375 630 2 × 240/120 C
315 315 800

SENTRIC Switch Disconnectors

Molded-plastic enclosures

■

Area of application

Our master and EMERCENCY-STOP switches provide absolute
safety, even during maintenance and repair work. All-round
safety for people and machines.

With their high degree of protection of IP65, they can even with­stand dust and water spray, providing unparalleled safety in the
building and industrial installations as well as the food and
chemical industry. Even with their enclosures open, they con­form to protection class 2. IP20 is the minimum degree of protec­tion.

Our enclosed master and EMERGENCY-STOP switches can be
locked with up to three padlocks and are available in two ergo­nomically designed versions

Conductor cross-section

u

main conductor/PEN

2

2)

2)

2)

3

) 2 × 240/240 C 8HP27 38 1 unit 14.200

2)

2)

2)

3

) 2 × 240/240 C 8HP27 58 1 unit 14.300

: from 16 A to 1000 A.

DT Order No. PS* Weight

1)

C 8HP27 07 1 unit 5.240
C 8HP27 11 1 unit 8.030
C 8HP27 12 1 unit 12.200

8HP27 17 1 unit 12.300
8HP27 18 1 unit 13.000

1)

C 8HP27 47 1 unit 5.210
C 8HP27 48 1 unit 7.990
C 8HP27 61 1 unit 12.300

8HP27 62 1 unit 12.300
8HP27 63 1 unit 12.800

per PU
approx.

kg

7

* This quantity or a multiple thereof can be ordered.

Siemens LV 10 · 2004

7/15