140G-H15H3-C25
The 140G-H15H3-C25 circuit breaker is designed with a robust H frame. It supports an interrupting rating of 150 kA, enhancing its effectiveness in managing electrical faults. This unit has a current r
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4.9
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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.
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Browse 140G MCB
Browse available units in our catalog of 140G MCB.
140G-H15H4-C25
This 140G series unit operates with an electronic LSI protection type and maintains a current range of 25 A. It supports a rated insulation voltage of 1000 V and withstands an impulse voltage of 8 kV.
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4.6
140G-H15I3-C25
This circuit breaker has a current range of 25 Amps and is rated for a maximum insulation voltage of 1000 V. Additionally, it has a rated impulse withstand voltage of 8 kV. Weighing 2.65 pounds, it fi
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5.0
140G-H2C4-C25
This particular model is designed with a four-pole configuration, catering to a current range of 25 A. It supports high voltages, with a rated insulation voltage of 1000 V and imparts durability throu
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4.7
140G-H2C4-C50
This H-frame circuit breaker supports a current range of 50 A and operates with fixed thermal and magnetic protection types. It is rated for insulation voltages of 1000 V and withstands impulse voltag
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4.7
140G-H2F4-D16
This circuit breaker features four poles and supports an adjustable thermal and magnetic trip mechanism. The maximum current range is set at 160 Amps. It also provides a rated insulation voltage of 10
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5.0
140G-H2H3-D12
This circuit breaker handles currents in the range of 120 A and is rated for insulation up to 1000 V. With a rated impulse withstand voltage of 8 kV, it is designed for various industrial applications
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4.8
140G-H3C3-C15
This molded case circuit breaker is classified under the H frame category. It features fixed thermal and magnetic protection types. The current range is rated at 15 A, with an insulation voltage ratin
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5.0
140G-H6X4
This molded case circuit breaker operates at rated insulation voltages of 1000 V and withstands impulse voltages of 8 kV. It is structured with a frame size H and weighs 3.53 pounds. The device also b
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4.9
140G-HC6I3-D10
This device features an HC frame type and offers a current range of 100 amps. It utilizes electronic LSIG protection and supports a rated insulation voltage of 1000 volts. The breaker can withstand im
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4.3
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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.