277 V Circuit Breaker 80

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Part RoHS Manufacturer Circuit Protection Type Mounting Feature Rated AC Voltage Rated DC Voltage Rated Current Terminal Shape Minimum Operating Temperature Terminal Finish Rated Breaking Capacity Manufacturer Series Trip Time/Delay Additional Features Actuator Type Packing Method Body Length/Diameter Body Width Environmental Characteristics JESD-609 Code Dimensions Circuit Function Body Height Reference Standard No. of Poles Maximum Operating Temperature Blow Characteristic

W68-X2Q12-15

TE Connectivity

Magnetic Circuit Breaker

Panel Mount

277 V

15 A

Quick Connect

5 kA

2.2 s

Toggle

50.8mm X 38.1mm X 51.89mm

Series Trip

2

W68-X2Q12-30

TE Connectivity

Magnetic Circuit Breaker

Panel Mount

277 V

30 A

Quick Connect

2.5 kA

2.2 s

Toggle

Series Trip

2

W68-X2Q12-20

TE Connectivity

Magnetic Circuit Breaker

Panel Mount

277 V

20 A

Quick Connect

-40 °C (-40 °F)

5 kA

2.2 s

Toggle

2 in (50.8 mm)

1.5 in (38.1 mm)

Fungus Resistant; Moisture Resistant

2 x 1.5 x 1.64 in (50.8 x 38.1 x 41.66 mm)

Series Trip

1.64 in (41.66 mm)

CSA; UL

2

85 °C (185 °F)

Standard

W67-X2Q12-10

TE Connectivity

Magnetic Circuit Breaker

Panel Mount

277 V

10 A

Quick Connect

-40 °C (-40 °F)

5 kA

2.2 s

Toggle

2 in (50.8 mm)

0.75 in (19.05 mm)

Fungus Resistant; Moisture Resistant

2 x 0.75 x 1.64 in (50.8 x 19.05 x 41.66 mm)

Series Trip

1.64 in (41.66 mm)

CSA; UL

1

85 °C (185 °F)

Standard

W67-X2Q12-15

TE Connectivity

Magnetic Circuit Breaker

Panel Mount

277 V

15 A

Quick Connect

-40 °C (-40 °F)

5 kA

2.2 s

Toggle

2 in (50.8 mm)

0.75 in (19.05 mm)

Fungus Resistant; Moisture Resistant

2 x 0.75 x 1.64 in (50.8 x 19.05 x 41.66 mm)

Series Trip

1.64 in (41.66 mm)

CSA; UL

1

85 °C (185 °F)

Standard

W67-X2Q12-20

TE Connectivity

Magnetic Circuit Breaker

Panel Mount

277 V

20 A

Quick Connect

-40 °C (-40 °F)

5 kA

2.2 s

Toggle

2 in (50.8 mm)

0.75 in (19.05 mm)

Fungus Resistant; Moisture Resistant

2 x 0.75 x 1.64 in (50.8 x 19.05 x 41.66 mm)

Series Trip

1.64 in (41.66 mm)

CSA; UL

1

85 °C (185 °F)

Standard

W67-X2Q12-5

TE Connectivity

Magnetic Circuit Breaker

Panel Mount

277 V

5 A

Quick Connect

-40 °C (-40 °F)

5 kA

2.2 s

Toggle

2 in (50.8 mm)

0.75 in (19.05 mm)

Fungus Resistant; Moisture Resistant

2 x 0.75 x 1.64 in (50.8 x 19.05 x 41.66 mm)

Series Trip

1.64 in (41.66 mm)

CSA; UL

1

85 °C (185 °F)

Standard

W68-X2Q12-3

TE Connectivity

Magnetic Circuit Breaker

Panel Mount

277 V

3 A

Quick Connect

-40 °C (-40 °F)

5 kA

2.2 s

Toggle

2 in (50.8 mm)

1.5 in (38.1 mm)

Fungus Resistant; Moisture Resistant

2 x 1.5 x 1.64 in (50.8 x 38.1 x 41.66 mm)

Series Trip

1.64 in (41.66 mm)

CSA; UL

2

85 °C (185 °F)

Standard

W68-X2Q12-5

TE Connectivity

Magnetic Circuit Breaker

Panel Mount

277 V

5 A

Quick Connect

-40 °C (-40 °F)

5 kA

2.2 s

Toggle

2 in (50.8 mm)

1.5 in (38.1 mm)

Fungus Resistant; Moisture Resistant

2 x 1.5 x 1.64 in (50.8 x 38.1 x 41.66 mm)

Series Trip

1.64 in (41.66 mm)

CSA; UL

2

85 °C (185 °F)

Standard

W68-X2Q12-7

TE Connectivity

Magnetic Circuit Breaker

Panel Mount

277 V

7 A

Quick Connect

-40 °C (-40 °F)

5 kA

2.2 s

Toggle

2 in (50.8 mm)

1.5 in (38.1 mm)

Fungus Resistant; Moisture Resistant

2 x 1.5 x 1.64 in (50.8 x 38.1 x 41.66 mm)

Series Trip

1.64 in (41.66 mm)

CSA; UL

2

85 °C (185 °F)

Standard

W69-X2Q12-20

TE Connectivity

Magnetic Circuit Breaker

Panel Mount

277 V

20 A

Quick Connect

-40 °C (-40 °F)

5 kA

2.2 s

Toggle

2.25 in (57.15 mm)

2 in (50.8 mm)

Fungus Resistant; Moisture Resistant

2.25 x 2 x 1.64 in (57.15 x 50.8 x 41.66 mm)

Series Trip

1.64 in (41.66 mm)

CSA; UL

3

85 °C (185 °F)

Standard

W69-X2Q12-30

TE Connectivity

Magnetic Circuit Breaker

Panel Mount

277 V

30 A

Quick Connect

-40 °C (-40 °F)

2.5 kA

2.2 s

Toggle

2.25 in (57.15 mm)

2 in (50.8 mm)

Fungus Resistant; Moisture Resistant

2.25 x 2 x 1.64 in (57.15 x 50.8 x 41.66 mm)

Series Trip

1.64 in (41.66 mm)

CSA; UL

3

85 °C (185 °F)

Standard

2C2UM

Altech

Thermal Magnetic Circuit Breaker

DIN Rail Mount

277 V

80 V

2 A

Screw And Snap On

-25 °C (-13 °F)

10 kA

Handle

Bulk

3.516 in (89.3 mm)

1.378 in (35 mm)

IP20

Under Voltage Release

2.693 in (68.4 mm)

CSA; UL; VDE

2

55 °C (131 °F)

2D20UM

Altech

Thermal Magnetic Circuit Breaker

DIN Rail Mount

277 V

80 V

20 A

Screw And Snap On

-25 °C (-13 °F)

10 kA

Handle

Bulk

3.516 in (89.3 mm)

1.378 in (35 mm)

IP20

Under Voltage Release

2.693 in (68.4 mm)

CSA; UL; VDE

2

55 °C (131 °F)

2D4UM

Altech

Thermal Magnetic Circuit Breaker

DIN Rail Mount

277 V

80 V

4 A

Screw And Snap On

-25 °C (-13 °F)

10 kA

Handle

Bulk

3.516 in (89.3 mm)

1.378 in (35 mm)

IP20

Under Voltage Release

2.693 in (68.4 mm)

CSA; UL; VDE

2

55 °C (131 °F)

1C6UL

Altech

Thermal Magnetic Circuit Breaker

DIN Rail Mount

277 V

6 A

Snap On

-25 °C (-13 °F)

10 kA

Toggle

Bulk

4.146 in (105.3 mm)

0.689 in (17.5 mm)

Trip

2.693 in (68.4 mm)

CE, CUL, UL

1

55 °C (131 °F)

W91-X112-30

TE Connectivity

Magnetic Circuit Breaker

Panel Mount

277 V

30 A

Stud

-40 °C (-40 °F)

5 kA

2.2 s

Toggle

2.5 in (63.5 mm)

0.75 in (19.05 mm)

Series Trip

1.845 in (46.86 mm)

1

85 °C (185 °F)

W92-X112-30

TE Connectivity

Magnetic Circuit Breaker

Panel Mount

277 V

30 A

Stud

-40 °C (-40 °F)

5 kA

2.2 s

Toggle

2.5 in (63.5 mm)

1.5 in (38.1 mm)

Moisture Resistant

Series Trip

1.985 in (50.42 mm)

CSA; UL; VDE

2

85 °C (185 °F)

Standard

W92-X112-40

TE Connectivity

Magnetic Circuit Breaker

Panel Mount

277 V

40 A

Stud

-40 °C (-40 °F)

5 kA

2.2 s

Toggle

2.5 in (63.5 mm)

1.5 in (38.1 mm)

Series Trip

1.845 in (46.86 mm)

2

85 °C (185 °F)

AA1-B0-26-430-1B1-C

Carling Technologies

Magnetic Circuit Breaker

Panel Mount

277 V

3 A

Quick Connect

-40 °C (-40 °F)

5 kA

Standards: MIL-PRF-55629, MIL-STD-202

Handle

2 in (50.8 mm)

0.755 in (19.18 mm)

Corrosion/Moisture Resistant

Series Trip

1.64 in (41.66 mm)

CSA; UL

1

85 °C (185 °F)

AA1-B0-21-620-1B1-C

Carling Technologies

Magnetic Circuit Breaker

Panel Mount

277 V

20 A

Quick Connect

-40 °C (-40 °F)

5 kA

Standards: MIL-PRF-55629, MIL-STD-202

Handle

2 in (50.8 mm)

0.755 in (19.18 mm)

Corrosion/Moisture Resistant

Series Trip

1.64 in (41.66 mm)

CSA; UL

1

85 °C (185 °F)

AA1-B0-21-620-1D2-C

Carling Technologies

Magnetic Circuit Breaker

Panel Mount

277 V

20 A

Quick Connect

-40 °C (-40 °F)

5 kA

Standards: MIL-PRF-55629, MIL-STD-202

Handle

2 in (50.8 mm)

0.755 in (19.18 mm)

Corrosion/Moisture Resistant

Series Trip

1.64 in (41.66 mm)

CSA; UL

1

85 °C (185 °F)

AA1-B0-24-620-5D1-C

Carling Technologies

Magnetic Circuit Breaker

Panel Mount

277 V

20 A

Screw

-40 °C (-40 °F)

5 kA

Standards: MIL-PRF-55629, MIL-STD-202

Handle

2 in (50.8 mm)

0.755 in (19.18 mm)

Corrosion/Moisture Resistant

Series Trip

1.64 in (41.66 mm)

CSA; UL

1

85 °C (185 °F)

AA1-B0-26-440-2B1-C

Carling Technologies

Magnetic Circuit Breaker

Panel Mount

277 V

4 A

Screw

-40 °C (-40 °F)

5 kA

Standards: MIL-PRF-55629, MIL-STD-202

Handle

2 in (50.8 mm)

0.755 in (19.18 mm)

Corrosion/Moisture Resistant

Series Trip

1.64 in (41.66 mm)

CSA; UL

1

85 °C (185 °F)

AA1-B0-26-450-1D1-C

Carling Technologies

Magnetic Circuit Breaker

Panel Mount

277 V

5 A

Quick Connect

-40 °C (-40 °F)

5 kA

Standards: MIL-PRF-55629, MIL-STD-202

Handle

2 in (50.8 mm)

0.755 in (19.18 mm)

Corrosion/Moisture Resistant

Series Trip

1.64 in (41.66 mm)

CSA; UL

1

85 °C (185 °F)

AA1-B0-26-470-1B1-C

Carling Technologies

Magnetic Circuit Breaker

Panel Mount

277 V

7 A

Quick Connect

-40 °C (-40 °F)

5 kA

Standards: MIL-PRF-55629, MIL-STD-202

Handle

2 in (50.8 mm)

0.755 in (19.18 mm)

Corrosion/Moisture Resistant

Series Trip

1.64 in (41.66 mm)

CSA; UL

1

85 °C (185 °F)

AA1-B0-34-450-3B1-C

Carling Technologies

Magnetic Circuit Breaker

Panel Mount

277 V

80 V

5 A

Screw

-40 °C (-40 °F)

5 kA

Standards: MIL-PRF-55629, MIL-STD-202

Handle

2 in (50.8 mm)

0.755 in (19.18 mm)

Corrosion/Moisture Resistant

Series Trip

1.64 in (41.66 mm)

CSA; UL

1

85 °C (185 °F)

AA1-B0-34-450-5D1-C

Carling Technologies

Magnetic Circuit Breaker

Panel Mount

277 V

80 V

5 A

Screw

-40 °C (-40 °F)

5 kA

Standards: MIL-PRF-55629, MIL-STD-202

Handle

2 in (50.8 mm)

0.755 in (19.18 mm)

Corrosion/Moisture Resistant

Series Trip

1.64 in (41.66 mm)

CSA; UL

1

85 °C (185 °F)

AA1-B0-34-615-331-C

Carling Technologies

Magnetic Circuit Breaker

Panel Mount

277 V

80 V

15 A

Screw

-40 °C (-40 °F)

5 kA

Standards: MIL-PRF-55629, MIL-STD-202

Handle

2 in (50.8 mm)

0.755 in (19.18 mm)

Corrosion/Moisture Resistant

Series Trip

1.64 in (41.66 mm)

CSA; UL

1

85 °C (185 °F)

AA1-B0-34-615-3B1-C

Carling Technologies

Magnetic Circuit Breaker

Panel Mount

277 V

80 V

15 A

Screw

-40 °C (-40 °F)

5 kA

Standards: MIL-PRF-55629, MIL-STD-202

Handle

2 in (50.8 mm)

0.755 in (19.18 mm)

Corrosion/Moisture Resistant

Series Trip

1.64 in (41.66 mm)

CSA; UL

1

85 °C (185 °F)

AA1-B0-34-615-3B1-I

Carling Technologies

Magnetic Circuit Breaker

Panel Mount

277 V

80 V

15 A

Screw

-40 °C (-40 °F)

5 kA

Standards: MIL-PRF-55629, MIL-STD-202

Handle

2 in (50.8 mm)

0.755 in (19.18 mm)

Corrosion/Moisture Resistant

Series Trip

1.64 in (41.66 mm)

CSA; UL

1

85 °C (185 °F)

AA1-B0-34-615-3D1-C

Carling Technologies

Magnetic Circuit Breaker

Panel Mount

277 V

80 V

15 A

Screw

-40 °C (-40 °F)

5 kA

Standards: MIL-PRF-55629, MIL-STD-202

Handle

2 in (50.8 mm)

0.755 in (19.18 mm)

Corrosion/Moisture Resistant

Series Trip

1.64 in (41.66 mm)

CSA; UL

1

85 °C (185 °F)

AA1-B0-34-615-3G2-C

Carling Technologies

Magnetic Circuit Breaker

Panel Mount

277 V

80 V

15 A

Screw

-40 °C (-40 °F)

5 kA

Standards: MIL-PRF-55629, MIL-STD-202

Handle

2 in (50.8 mm)

0.755 in (19.18 mm)

Corrosion/Moisture Resistant

Series Trip

1.64 in (41.66 mm)

CSA; UL

1

85 °C (185 °F)

AA1-B0-34-620-3B1-C

Carling Technologies

Magnetic Circuit Breaker

Panel Mount

277 V

80 V

20 A

Screw

-40 °C (-40 °F)

5 kA

Standards: MIL-PRF-55629, MIL-STD-202

Handle

2 in (50.8 mm)

0.755 in (19.18 mm)

Corrosion/Moisture Resistant

Series Trip

1.64 in (41.66 mm)

CSA; UL

1

85 °C (185 °F)

AA1-B0-34-620-5D1-C

Carling Technologies

Magnetic Circuit Breaker

Panel Mount

277 V

80 V

20 A

Screw

-40 °C (-40 °F)

5 kA

Standards: MIL-PRF-55629, MIL-STD-202

Handle

2 in (50.8 mm)

0.755 in (19.18 mm)

Corrosion/Moisture Resistant

Series Trip

1.64 in (41.66 mm)

CSA; UL

1

85 °C (185 °F)

AA1-B0-34-630-5D1-C

Carling Technologies

Magnetic Circuit Breaker

Panel Mount

277 V

80 V

30 A

Screw

-40 °C (-40 °F)

5 kA

Standards: MIL-PRF-55629, MIL-STD-202

Handle

2 in (50.8 mm)

0.755 in (19.18 mm)

Corrosion/Moisture Resistant

Series Trip

1.64 in (41.66 mm)

CSA; UL

1

85 °C (185 °F)

AA2-B0-26-410-1B1-C

Carling Technologies

Magnetic Circuit Breaker

Panel Mount

277 V

1 A

Quick Connect

-40 °C (-40 °F)

5 kA

Standards: MIL-PRF-55629, MIL-STD-202

Handle

2 in (50.8 mm)

1.515 in (38.48 mm)

Corrosion/Moisture Resistant

Series Trip

1.64 in (41.66 mm)

CSA; UL

2

85 °C (185 °F)

AA2-B0-34-625-9G7-C

Carling Technologies

Magnetic Circuit Breaker

Panel Mount

277 V

80 V

25 A

Screw

-40 °C (-40 °F)

5 kA

Standards: MIL-PRF-55629, MIL-STD-202

Handle

2 in (50.8 mm)

1.515 in (38.48 mm)

Corrosion/Moisture Resistant

Series Trip

1.64 in (41.66 mm)

CSA; UL

2

85 °C (185 °F)

AA2-B0-44-630-5B1-C

Carling Technologies

Magnetic Circuit Breaker

Panel Mount

277 V

30 A

Screw

-40 °C (-40 °F)

5 kA

Standards: MIL-PRF-55629, MIL-STD-202

Handle

2 in (50.8 mm)

1.515 in (38.48 mm)

Corrosion/Moisture Resistant

Series Trip

1.64 in (41.66 mm)

CSA; UL

2

85 °C (185 °F)

AB2-B0-34-625-5D1-C

Carling Technologies

Magnetic Circuit Breaker

Panel Mount

277 V

80 V

25 A

Screw

-40 °C (-40 °F)

5 kA

Standards: MIL-PRF-55629, MIL-STD-202

Handle

2 in (50.8 mm)

1.515 in (38.48 mm)

Corrosion/Moisture Resistant

Series Trip

1.64 in (41.66 mm)

CSA; UL

2

85 °C (185 °F)

AB3-B0-26-475-3B1-C

Carling Technologies

Magnetic Circuit Breaker

Panel Mount

277 V

7.5 A

Screw

-40 °C (-40 °F)

5 kA

Standards: MIL-PRF-55629, MIL-STD-202

Handle

2.265 in (57.53 mm)

2 in (50.8 mm)

Corrosion/Moisture Resistant

Series Trip

1.64 in (41.66 mm)

CSA; UL

3

85 °C (185 °F)

AC2-B2-26-610-144-C

Carling Technologies

Magnetic Circuit Breaker

Panel Mount

277 V

10 A

Quick Connect

-40 °C (-40 °F)

5 kA

Standards: MIL-PRF-55629, MIL-STD-202

Rocker

2.156 in (54.76 mm)

1.515 in (38.48 mm)

Corrosion/Moisture Resistant

Series Trip

1.64 in (41.66 mm)

CSA; UL

2

85 °C (185 °F)

AD1-B2-26-610-143-C

Carling Technologies

Magnetic Circuit Breaker

Panel Mount

277 V

10 A

Quick Connect

-40 °C (-40 °F)

5 kA

Standards: MIL-PRF-55629, MIL-STD-202

Rocker

2.156 in (54.76 mm)

0.745 in (18.92 mm)

Corrosion/Moisture Resistant

Series Trip

1.64 in (41.66 mm)

CSA; UL

1

85 °C (185 °F)

AD2-B0-34-625-3B1-C

Carling Technologies

Magnetic Circuit Breaker

Panel Mount

277 V

80 V

25 A

Screw

-40 °C (-40 °F)

5 kA

Standards: MIL-PRF-55629, MIL-STD-202

Rocker

2.156 in (54.76 mm)

1.515 in (38.48 mm)

Corrosion/Moisture Resistant

Series Trip

1.64 in (41.66 mm)

CSA; UL

2

85 °C (185 °F)

AF2-B0-44-610-531-C

Carling Technologies

Magnetic Circuit Breaker

Panel Mount

277 V

10 A

Screw

-40 °C (-40 °F)

5 kA

Standards: MIL-PRF-55629, MIL-STD-202

Rocker

2.156 in (54.76 mm)

1.515 in (38.48 mm)

Corrosion/Moisture Resistant

Series Trip

1.64 in (41.66 mm)

CSA; UL

2

85 °C (185 °F)

CM1-B0-22-420-201-C

Carling Technologies

Magnetic Circuit Breaker

Panel Mount

277 V

2 A

Screw

-40 °C (-40 °F)

5 kA

Standards: MIL-PRF-55629, MIL-STD-202

Toggle

2.5 in (63.5 mm)

0.755 in (19.18 mm)

Corrosion/Moisture Resistant

Series Trip

1.85 in (47 mm)

CSA; UL

1

85 °C (185 °F)

AA1-B0-34-610-531-C

Carling Technologies

Magnetic Circuit Breaker

Panel Mount

277 V

80 V

10 A

Screw

-40 °C (-40 °F)

5 kA

Standards: MIL-PRF-55629, MIL-STD-202

Handle

2 in (50.8 mm)

0.755 in (19.18 mm)

Corrosion/Moisture Resistant

Series Trip

1.64 in (41.66 mm)

CSA; UL

1

85 °C (185 °F)

BA3-B0-46-610-531-D

Carling Technologies

Magnetic Circuit Breaker

Panel Mount

277 V

10 A

Screw

-40 °C (-40 °F)

1.5 kA

Toggle Handle

2 in (50.8 mm)

2.265 in (57.53 mm)

Corrosion/Moisture Resistant

Series Trip

1.73 in (43.94 mm)

CSA; UL; VDE

3

85 °C (185 °F)

Circuit Breaker

A circuit breaker is an automatic electrical switch that is designed to protect an electrical circuit from damage caused by overcurrent or short circuits. Circuit breakers are commonly used in residential, commercial, and industrial electrical systems, and they are an important safety device that helps prevent electrical fires, equipment damage, and personal injury.

Circuit breakers work by monitoring the amount of current flowing through an electrical circuit. If the current exceeds a preset level, the circuit breaker will trip, or open the circuit, to prevent damage to the electrical system. When the circuit breaker trips, it interrupts the flow of current, which stops the electrical current from flowing and prevents further damage.

Circuit breakers are available in a variety of types and sizes, and they can be classified based on their voltage rating, current rating, and interrupting capacity. Some common types of circuit breakers include thermal circuit breakers, magnetic circuit breakers, and hybrid circuit breakers.

In addition to protecting electrical systems from overcurrent and short circuits, circuit breakers also help improve the reliability and efficiency of electrical systems. They can also be used to switch electrical circuits on and off, which can be helpful in certain applications.