Cutler Hammer, Div of Eaton Corp 10250T Series Technical Specifications
March 2008
10250T Series
Mounting Nut Legend Plate Operator
Terminal Clamps Shipped
Ready to Wire
Stackable Contact
Blocks up to 12
Circuits per Operator
Color Coded Plungers
Red = NC Green = NO
Pushbuttons & Indicating Lights
30.5 mm Heavy-Duty Watertight/Oiltight
10250T Series
47-115
Contents
Description Page
Product Description . . . . . . . . 47-115
Features . . . . . . . . . . . . . . . . . . 47-116
Benefits . . . . . . . . . . . . . . . . . . 47-116
Contact Operation . . . . . . . . . 47-116
Standards and
Certifications. . . . . . . . . . . . . 47-116
Technical Data and
Specifications . . . . . . . . . . . . 47-116
Point-of-Purchase
Packaging . . . . . . . . . . . . . . . 47-117
Product Selection
Non-illuminated
Momentary Pushbutton
Units . . . . . . . . . . . . . . . . . 47-118
Pushbuttons . . . . . . . . . . . . 47-119
Illuminated Momentary
Pushbutton Units. . . . . . . 47-122
Indicating Light Units . . . . 47-123
Illuminated Pushbuttons
and Indicating Lights. . . . 47-124
Push-Pull Units. . . . . . . . . . 47-125
Illuminated Push-Pull
Units . . . . . . . . . . . . . . . . . 47-126
Potentiometers. . . . . . . . . . 47-128
Push-Pulls . . . . . . . . . . . . . . 47-129
Selector Switch Units . . . . 47-132
Selector Switch
Selection . . . . . . . . . . . . . 47-133
Selector Switch
Operators . . . . . . . . . . . . . 47-135
Illuminated Selector
Switch Operators. . . . . . . 47-138
Joysticks Units . . . . . . . . . . 47-139
Joystick . . . . . . . . . . . . . . . . 47-139
Roto-Push
Roto-Push Operators . . . . . 47-143
Contact Blocks . . . . . . . . . . 47-148
Options
Legend Plates . . . . . . . . . . . 47-151
Enclosures . . . . . . . . . . . . . 47-153
Accessories . . . . . . . . . . . . . . . 47-155
Renewal Parts . . . . . . . . . . . . . 47-157
Mounting . . . . . . . . . . . . . . . . . 47-159
Dimensions . . . . . . . . . . . . . . . 47-160
Ordering Complete
Devices . . . . . . . . . . . . . . . . . 47-163
Catalog Number
Structure . . . . . . . . . . . . . . . . 47-164
®
Units. . . . . . . . 47-142
Product Description
The 30.5 mm pushbutton line features
a zinc die cast construction with
chrome-plated housing and mounting
nut. The same durable construction is
also available with the corrosive resistant E34 line of pushbuttons. See E34
section on Pages 47-166 – 47-189.
Reliability Nibs
Eaton’s Cutler-Hammer® contact
blocks feature enclosed silver contacts
with pointed “reliability nibs” for reliable performance from logic level up
to 600V. To ensure reliable switching,
nibs bite through oxide which can form
on silver contacts, eliminating the
need for expensive logic level blocks
for most applications.
Dry Circuit
Medium Duty
Heavy-Duty
Figure 47-90. Reliability Nibs
Reliability nibs improve performance
in dry circuit, corrosive, fine dust and
other contaminated atmospheres.
Under normal environmental conditions, the minimum operational voltage
is 5V and the minimum operational
current is 1 mA, AC/DC. For operation
under a wider range of environmental
conditions, logic level contact blocks
with inert palladium tipped contacts
are recommended.
Grounding Nibs
10250T line operators have “grounding
nibs” — four metal points on the operator casting designed to bite through
most paints and other coatings on
metal panels to enhance the ground
connection when the operator is
securely tightened.
Grounding
Nibs
Grounding Nibs
Diaphragm Seal with Drainage Holes
Liquid Drainage
Eaton’s Cutler-Hammer pushbutton
operators offer front of panel drainage
via holes in the operator bushing. Hidden from view by the mounting nut,
these holes prevent buildup of liquid
inside the operator, which can prevent
operation in freezing environments.
The holes also provide a route for
escaping liquid in high pressure washdowns, effectively relieving pressure
from the internal diaphragm seal,
ensuring reliable sealing in applications even beyond NEMA 4.
Foam Neoprene
Panel Sealing Gasket
Mounting Nut
Figure 47-91. Diaphragm Seal
Drainage Hole
Flexible
Diaphragm
Stainless
Steel
Operating
Spring
Colorfast
Molded
Button
Drainage Hole
47
CA08102001E For more information visit: www.eaton.com
47-116
Pushbuttons & Indicating Lights
30.5 mm Heavy-Duty Watertight/Oiltight
March 2008
10250T Series, Technical Data and Specifications
47
Features
■ Heavy-duty zinc die cast construction
■ Enclosed silver contacts with
reliability nibs
■ Diaphragm seals with drainage
holes
■ Grounding nibs on the operator
casing
Benefits
■ Reliability nibs improve contact
reliability even under dry circuit and
fine dust conditions
■ Drainage holes prevent buildup of
liquid inside the operator which
can prevent operation in freezing
environments
■ Grounding nibs bit through paint
and other coatings to provide
secure ground
Contact Operation
Slow make and break. All normally
closed contacts have positive opening
operation, i.e., normally closed contacts
are forced open in the event of contact
weld or spring breakage.
Standards and Certifications
■ CE EN60947-5-1
■ UL 508 — File No. 131568
■ CSA C22.2 No. 14 — File No. LR68551
Ingress Protection
When mounted in similarly rated
enclosure —
■ Standard Indicating Lights
❑ UL (NEMA) Type 1, 2, 3, 3R, 3S, 4,
4X, 12, 13
❑ IEC IP65
■ All Other Operators
❑ UL (NEMA) Type 1, 2, 3, 3R, 4, 4X,
12, 13
❑ IEC IP65
Technical Data and
Specifications
Mechanical Ratings
■ Frequency of operation
❑ All pushbuttons:
6000 operations/hr.
❑ Key and lever selector switches:
3000 operations/hr.
❑ Auto-latch devices:
1200 operations/hr.
■ Life
❑ Pushbuttons: 10 x 10
❑ Contact blocks: 10 x 10
❑ PresTest units: 10 x 10
❑ Lever and key selector switches:
0.25 x 10
❑ Twist to release pushbuttons:
0.3 x 10
■ Shock resistance
❑ Duration: 20 mS ≥ 5g
6
operations
6
operations
6
operations
6
operations
6
operations
Electrical Ratings
■ Insulation: Ui = 660V AC or DC
■ Thermal: lth = 10A
Short Circuit Coordination to
IEC/EN 60947-5-1
■ Rated conditional short circuit cur-
rent: 1 kA
■ Fuse type: GE Power Controls TIA
10, Red Spot Type gG, 10A,
660V AC, 460V DC, BS88-2,
IEC 60269-2-1
Climate Conditions
■ Operating Temperature: 1° to 150°F
(-17° to 66°C)
■ Storage Temperature: -40° to 176°F
(-40° to 80°C)
■ Altitude: 6,562 ft. (2,000m)
■ Humidity: Max. 95% RH @ 60°C
Terminals
■ Marking
❑ NC-NO on the contact block to meet
the NEMA requirements. Dual
marking system 1 – 2 for normally
closed, 3 – 4 for normally open to
meet BS5472 (Cenelec EN50 005)
■ Clamps
❑ Terminals are saddle clamp type
for 1 x 22 AWG (0.34 mm
AWG (2.5 mm
■ Torque = 7 lb-in (0.8 Nm)
■ Degree of protection against
2
) conductors
2
) to 2 x 14
direct electrical contact: IP2X
with fingerproof shroud
Light Units
■ Transformers: will withstand short
circuit for 1 hour per IEC 60997-5-1
■ Bulbs — average life
❑ Transformer type: 20,000 hrs.
❑ Resistor/direct voltage type:
2500 hrs. minimum @ rated V
❑ LED: 60,000 to 100,000 hrs.
■ UL rating: A600, P600
❑ AC load life duty cycle
1200 operations/hour
– 10A: 110V pf 0.4 – 1 x 10
operations
– 5A: 250V pf 0.4 – 1 x 10
operations
– 2A: 660V pf 0.4 – 1 x 10
operations
■ Switching capacity
❑ AC15 rated make/break
(11 x le at 1.1 x Ue)
– 6A: 120V pf 0.3
– 4A: 240V pf 0.3
– 2A: 660V pf 0.3
❑ DC13 rated make/break
(1.1 x le at 1.1 x Ue)
– 1.0A: 125V L/R ≥ 0.95 at 300 mS
– .55A: 250V L/R ≥ 0.95 at 300 mS
– .1A: 660V L/R ≥ 0.95 at 300 mS
– 10A: 110V pure resistive
■ Maximum ratings for logic level
and hostile atmosphere application
❑ Maximum amperes: 0.5A
❑ Maximum volts: 120V AC/DC
Table 47-171. Contact Block
Meet or Exceed NEMA Rating Designations A600, A300 and B300 for AC and P600 for DC
Description Volts AC 50 or 60 Hz Volts DC
120 240 480 600 24/28 125 250
Make and Emerg. Interrupting Capacity (Amp)
Normal Load Break (Amp)
Thermal Current (Amp)
Voltamperes:
Make and Emerg. Interrupting Capacity
Normal Load Break
7200
720
60
30
6
3
10
10
7200
7200
720
720
Fuse
15
12
1.5
10
7200
720
5.7
1.2
5.7
10
5.0
138
138
138
138
1.1
1.1
5.0
6
6
6
0.55
0.55
5.0
138
138
For more information visit: www.eaton.com CA08102001E
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