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 Series of
pushbuttons.
The 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.
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.
10250T Series operators have “grounding
nibs”—4 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.
Omega’s pushbutton operators offer front of
panel drainage via holes in the operator
90
10250T25R,
$38.75
10250T122,
$53
10250T17213,
$69.50
10250T103,
$24.90
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
I-9
All models shown
smaller than
actual size.
10250T23B,
$38.75
10250T112,
$24.90
10250T101,
$24.90
in high pressure washdowns, effectively
relieving pressure from the internal
diaphragm seal. This ensures reliable sealing
in applications even beyond NEMA 4.
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
MECHANICAL RATINGS
Frequency of Operation:
All Pushbuttons: 6000 operations
per hr
Key and Lever Selector Switches:
3000 operations per hr
Auto-Latch Devices: 1200
operations per hr
Life:
Pushbuttons: 10 x 106 operations
Contact Blocks: 10 x 106 operations
PresTest Units: 10 x 106 operations
Lever and Key Selector Switches:
0.25 x 106 operations
Twist-to-Release Pushbuttons:
0.3 x 106 operation
Shock Resistance Duration:
20 mS ≥ 5g
Climate Conditions:
Operating Temperature: -17 to 66°C
(1 to 150°F)
Storage Temperature: -40 to 80°C
(-40 to 176°F)
Altitude: 2000 m (6562')
Max Humidity: 95% RH @ 60°C
(140°F)
Terminals: Marking; NC-NO on the
contact block to meet the NEMA
requirements; dual marking system
1 to 2 for normally closed, 3 to 4 for
normally open to meet BS5472
(Cenelec EN50 005)
Clamps: Terminals are saddle clamp
type for 1 x 22 AWG (0.34 mm2) to
2 x 14 AWG (2.5 mm2) conductors;
torque = 7 lb-in (0.8 Nm)
Degree of Protection Against Direct
Electrical Contact: IP2X with
fingerproof shroud
Light Units: Transformers will
withstand short circuit for 1 hr per
IEC 60997-5-1
Average Bulb Life:
Transformer type: 20,000 hrs
Resistor/Direct Voltage Type:
2500 hr min @ rated V
LED: 60,000 to 100,000 hrs
Electrical Ratings
Insulation: Ui = 660 Vac or Vdc
Thermal: lth = 10 A
Short Circuit Coordination to
IEC/EN 60947-5-1:
Rated Conditional Short Circuit
Current: 1 kA
Fuse Type: GE Power Controls
TIA 10, Red Spot Type gG, 10 A,
660 Vac, 460 Vdc, BS88-2,
IEC 60269-2-1
UL Rating: A600, P600
AC Load Life Duty Cycle: 1200
operations per hr
10A: 110V pf 0.4 – 1 x 106
operations
5A: 250V pf 0.4 – 1 x 106 operations
2A: 660V pf 0.4 – 1 x 106 operations
Switching Capacity:
AC15 Rated Make/Break
(11 x le at 1.1 x Ue):
6 A: 120V pf 0.3
4 A: 240V pf 0.3
2 A: 660V pf 0.3
DC13 Rated Make/Break
(1.1 x le at 1.1 x Ue):
1.0 A: 125V
0.55 A: 250V
0.1 A: 660V L/R ≥ 0.95 @ 300 mS
10 A: 110V pure resistive
Maximum Ratings for Logic Level and
Hostile Atmosphere Application:
Max Amperes: 0.5 A
Max Volts: 120 Vac/Vdc
L/R ≥ 0.95 @ 300 mS
L/R ≥ 0.95 @ 300 mS
10250T101, $24.90
Order Complete Devices
and a Legend Plate
Build Your Own System
+
10250TM47, $3.10
OR
10250T29,
$85.50
+
10250T2, $27.50
Note: To order complete system add a
contact block and legend plate to operator.
+
10250TM47, $3.10
I-10
Page 3
10250T112,
$24.90
10250T63, $75
10250T17213,
$69.50
10250T101,
$24.90
10250T172,
$63
10250T103,
$24.90
All models shown
smaller than actual size.
10250T411,
$92
10250T122,
$53
10250T79, $55
Dimensions: mm (in)
46
(1.81)
45.1
(1.78)
Flush and Long Pushbutton
Half Shroud is same as Long Pushbutton
with Lower Half of Guard Ring Cut Back
27.7
(1.09)
26.9
(1.06)
To Order (Specify Model Number)
MODEL NO.PRICEDESCRIPTION
10250T MOMENTARY PUSHBUTTON OPERATORS
10250T101$24.90Black flush pushbutton operator
10250T10324.90Green flush pushbutton operator
10250T11224.90Red extended pushbutton operator
10250T12253.00Red mushroom head operator
10250T546.00Push-pull maintained 2-position operator without lens
10250T1721369.50E-Stop mushroom operator
10250T41192.00Illuminated pushbutton operator, no lens, 120 Vac, incandescent
10250T17263.00Red jumbo mushroom head operator
10250T7955.0024/48V full votage push-pull light unit
10250T6375.00120V transformer incandescent push-pull light unit
Comes with retaining nut, operator gasket, and instruction sheet.
Ordering Example: 10250T101, black flush pushbutton operator, $24.90.
9.7
(0.38)
Long
Button
35.1
(1.38)
Only
I-11
Dimensions: mm (in)
28.7
22.4 (0.88)
For Each
Additional
Contact Block
(1.13)
1.5 (0.06) to 6.4 (0.25)
Panel Thickness
63.5
(2.5)
38.1
(1.5)
41.4
(1.63)
44.5
(1.75)
Mushroom and
Jumbo Head
Pushbutton
AVAILABLE FOR FAST DELIVERY!
Page 4
10250T231N,
$103
10250T221N,
$122
10250T181N,
$92
All models shown
To Order (Specify Model Number)
smaller than actual size.
AVAILABLE FOR FAST DELIVERY!
MODEL NO.PRICEDESCRIPTION
10250T INDICATING LIGHTS
10250T221N$122.00Pres-test 120V transformer type, no lens
10250T231N103.00Pres-test 120V full voltage/resistor type, no lens
10250T181N92.00120V transformer type, no lens
10250T201N75.00120V full voltage/resistor type, no lens
Comes with instruction sheet.
Ordering Example: 10250T221N, pre-test 120 V transformer type, $122.
10250T3011,
$34.25
10250T201N,
$75
10250T1311,
$34.25
10250T3023,
$34.25
10250T1323,
$34.25
All models shown
To Order (Specify Model Number)
smaller than actual size.
MODEL NO.PRICEDESCRIPTION
10250T SELECTOR SWITCHES – MAINTAINED
MODEL NO.PRICEDESCRIPTION
10250T PUSHBUTTONS CONTACT BLOCK
10250T2$27.50Contact block—2 NO, 6 blocks can be stacked
10250T327.50Contact block—2 NC, 6 blocks can be stacked
10250T5113.90Contact block—1 NC, 6 blocks can be stacked
10250T5313.90Contact block—1 NO, 6 blocks can be stacked
10250T128.00Contact block—NO-NC, 6 blocks can be stacked
10250T7114.00Contact block—late opening NC
10250T4728.00Contact block—early closing NO and standard NC
10250T5728.00Contact block—early closing NO and standard NO, 4 blocks can be stacked
Comes with instruction sheet.
Ordering Example: 10250T2, contact block, 2 normally open, $27.50.
10250T47,
$28
10250T20LB,
$63
10250T21LB,
To Order (Specify Model Number)
MODEL NO.PRICEDESCRIPTION
10250T COMMON COMPLETE DEVICES (INCLUDES CONTACT BLOCKS)
10250T20LB$63.00On/Off switch (black knob switch comes with NO/NC contact block)
10250T21LB63.00H-O-A switch (black lever switch comes with 2 NO/2 NC contact blocks)
10250T23B38.75Start button (black flush button comes with NO contact block)
10250T25R38.75Stop button (red extended button comes with NC contact block)
10250T2985.50Emergency stop (red jumbo MRH button comes with NC contact block)
Comes with instruction sheet.
Ordering Example: 10250T29, emergency stop, $85.50.
$63
10250T23B,
$38.75
I-13
10250T25R,
$38.75
AVAILABLE FOR FAST DELIVERY!
10250T29,
$85.50
Page 6
All models shown
smaller than actual size.
10250TB63, $7
10250TC47, $7
10250TC53, $7
10250TB62, $7
10250TC57,
$16
To Order (Specify Model Number)
10250TC63,
$16
AVAILABLE FOR FAST DELIVERY!
MODEL NO.PRICEDESCRIPTION
10250T PUSHBUTTONS – HEAD AND LENS SELECTION TABLE
10250TB62$7.00Red button for non-illuminated push-pull
10250TB637.00Red (emergency stop) for non-illuminated push-pull
10250TJ6238.00Red jumbo mushroom head for non-illuminated push-pull
10250TJ6345.00Red jumbo mushroom head (emergency stop) for non-illuminated push-pull
10250TC477.00Red lens for illuminated push-pull
10250TC537.00Red (emergency stop) lens for illuminated push-pull
10250TC5716.00Red side-lighted anodized aluminum ring
10250TC6316.00Red (emergency stop) side-lighted anodized aluminum ring
Comes with instruction sheet.
Ordering Example: 10250TC57, red side-lighted anodized aluminum ring, $16.
10250TC12N,
$11.70
All models shown
smaller than actual size.
To Order (Specify Model Number)
MODEL NO.PRICEDESCRIPTION
10250T LENS FOR INDICATING LIGHTS
Comes with instruction sheet.
Ordering Example: 102TN12, 2-hole, 2 contact block depth enclosure, $103
28-3044,
$7
28-3754,
$13
28-3755,
$13
To Order (Specify Model Number)
MODEL NO.PRICEDESCRIPTION
REPLACEMENT LAMPS
28-3044$7.00120V, 10250T resistor indicating light
10250ED986-417.006.3V, 10250T flasher
28-22027.006.3V, 10250T transformer, PresTest and full voltage
28-51847.0012V, 10250T full voltage
28-51857.0024V, 10250T full voltage
28-51867.0032V, 10250T full voltage
28-51877.0055V, 10250T resistor
28-49413.00120V, 10250T neon
28-375413.00120V, 10250T neon, T 31⁄4 bayonet
28-375513.0024V, 10250T neon
Comes with instruction sheet.
Ordering Example: 28-3044, replacement lamp 120V, $7
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