140G-HC0C3-C32
This circuit breaker is classified under the HC frame type and supports a current range of 32 A. It holds a rated insulation voltage of 1000 volts and sustains impulse withstand voltages of 8 kV. Its
Call
4.8
Free UPS Ground on All Orders!
+1 (919) 205-4392
Allen Bradley 140G MCB
The Allen Bradley 140G molded case circuit breakers are suitable for a wide range of applications in low-voltage 3-phase power systems. 140G series circuit breakers can be reverse-fed. They provide overcurrent protection to conductors and other equipment, and they can be used as the main disconnecting devices for control panels. The 140G circuit breakers can also be used for branch circuit protection or as feeder breakers.
Learn more
Browse 140G MCB
Browse available units in our catalog of 140G MCB.
140G-HC6C3-C15
This circuit breaker is designed for a current range of 15 Amps. It features fixed thermal and fixed magnetic protection types. The rated insulation voltage stands at 1000 volts, with an impulse withs
Call
5.0
140G-I3C3-C63
This circuit breaker features an I frame and utilizes fixed thermal and fixed magnetic protection types. It operates within a current range of 63 A, with a thermal trip threshold of 63 A and a magneti
Call
4.7
140G-I3C3-D10
This circuit breaker is equipped with fixed thermal and magnetic protection types, and it can manage a current range of 100 A. It is rated for an insulation voltage of 800 V and withstands impulse vol
In Stock Ships Today
4.7
140G-J0F4-D22
This 140G-J0F4-D22 circuit breaker has an interrupting capacity of 100 kA and is designed with four poles. The rated current of this breaker is set at 220 A. Additionally, it can handle rated insulati
Call
4.7
140G-J0I3-C60
Designed with a sturdy J-frame, this circuit breaker has an interrupting capacity rated at 100 kA. It supports a rated current of up to 60 Amps and operates safely at a rated insulation voltage of up
Call
4.8
140G-J0X4
This four-pole circuit breaker utilizes a breaker frame for its protective functionality. It allows for operation at a rated insulation voltage of up to 1000V and can withstand impulse voltages of up
Call
5.0
140G-J2C3-C50
This circuit breaker operates with a rated current of 50 A, a maximum current of 250 A, and at an effective insulation voltage of 1000 volts. The unit endures up to 8 kV of impulse voltage and has a s
In Stock Ships Today
5.0
140G-J3I4-D25
This circuit breaker fits within the J frame size and employs electronic LSIG protection technology. It supports a rated insulation voltage up to 1000 volts and has an impulse withstand voltage rated
Call
5.0
140G-J6C3-C32
This molded case circuit breaker has a rated current of 32 A and can operate at an insulation voltage of 1000V. It also features a rated impulse withstand voltage of 8 kV. The weight of this unit is 5
Call
4.9
Showing 551-560 of
1,219
results
About 140G MCB
The Allen-Bradley/Rockwell Automation 140G MCB series is a series of molded case circuit breakers. According to the National Electrical Manufacturers Association (NEMA), a circuit breaker is a device designed to open and close a circuit by non-automatic means, and to open the circuit automatically at a predetermined overcurrent level without injury to itself when it is properly applied within its rating. The 140G MCB circuit breakers employ different methods to control the operating mechanisms. These methods include stored energy operation, dependent manual/power operation, and independent manual/power operation. When breakers in the 140G MCB family encounter an overcurrent, they can use instantaneous, inverse time delay, and definite time delay overcurrent releases. All these breakers from the Allen-Bradley 140G series of molded-case circuit breakers come with a frame rating of 125 Amps and an interrupting capacity that goes from 25 to 65 kA.
The Allen-Bradley 140G MCB series of circuit breakers are CCC, UL, and CSA certified since they comply with international standards such as the UL, CSA, and IEC standards. Since these circuit breakers have molded cases, they provide short circuit and thermal overcurrent protection by using either mechanical or electronic means. Note that the mechanical means use heater elements to detect the current flow and model the associated heat generated by the current. Additionally, molded case circuit breakers in this family feature either fixed or adjustable trip units. Whether they use fixed or adjustable magnetic and thermal trip units, the motor current rating of these circuit breakers should be less than or equal to 250% of the motor’s full-load ampere rating, or less than or equal to 300% for motors with a current of less than or equal to 100 amperes if the circuit trips on startup. Also, a circuit breaker in the 140G MCB series can be used with a motor current rating of less than 400% for motors with a current rating of more than or equal to 100 Amps if the circuit breaker trips on startup. The safety features of these breakers are capable of preventing accidents such as fires and explosions due to over-current or the overheating of conduits.