140G-H6H4-D12
With a frame designation of H, the 140G-H6H4-D12 supports an electrical life rated at 120 operations per hour and a mechanical life of up to 240 operations per hour. This circuit breaker can handle cu
Call
4.6
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-H6H4-D16
This circuit breaker features four poles and operates within a current range of 16 A. It implements electronic LSI protection for advanced monitoring and control. Rated insulation voltage is 1000 V, a
Call
4.7
140G-H6I4-C60
This circuit breaker supports a current range of 60 Amps and features a rated insulation voltage of 1000 Volts. It can handle impulse withstand voltage up to 8 kV, ensuring resilience against surges.
Call
4.9
140G-H6I4-D10
This model is structured with four poles and operates within a current range of 100 Amps. It is equipped with electronic LSIG protection and can handle an insulation voltage of 1000 V. With an impulse
Call
4.7
140G-H6I4-D16
This circuit breaker features four poles and handles a current range of 160 A. It is rated for insulation voltage up to 1000 V and can withstand impulse voltages of 8 kV. The piece weighs 3.53 lbs and
Call
4.6
140G-HC0C3-C35
This circuit breaker supports a current range of 35 A and is rated for insulation up to 1000V. The impulse withstand voltage is rated at 8 kV, providing enhanced durability. Weighing 2.65 lb, it demon
Call
4.7
140G-HC0C3-C63
This breaker, classified within the HC frame size, supports a current range of 63 Amps. It is equipped with fixed thermal and magnetic protection, suitable for a wide range of applications. The rated
Call
4.7
140G-HTC4-C60
This circuit breaker operates within a current range of 60 Amps and has an interrupting rating specific to the trip unit. It features a rated insulation voltage of 1000 V and can withstand impulse vol
Call
5.0
140G-HTC4-C70
This circuit breaker operates within a current range of 70 Amps. It employs fixed thermal and magnetic protection types to prevent electrical faults. Rated for insulation voltages of 1000 V and able t
Call
5.0
140G-HTH3-D10
Part of the HC frame series, the 140G-HTH3-D10 features electronic LSI protection and a current range capped at 100 A. It can withstand impulse voltages of 8 kV and weighs 2.65 pounds. The mechanical
Call
4.9
Showing 921-930 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.