140G-H15C3-C15
This molded case circuit breaker, 140G-H15C3-C15, supports a current range of 15 A, fitting well into various electrical setups. It operates at a rated insulation voltage of 1000 V and withstands impu
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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-H15C4-C32
Designed with a frame size of H, the 140G-H15C4-C32 features fixed magnetic and thermal protection. It operates within a current range of up to 32 A and maintains a rated insulation voltage of 1000 V.
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140G-H15F3-C90
This model operates within a current range of 90 A and incorporates adjust thermal and magnetic protection types. It supports a rated insulation voltage of 1000 volts and withstands impulse voltages u
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140G-H2C4-C15
The Allen-Bradley 140G-H2C4-C15 is engineered with a four-pole configuration and an interrupting capacity of 25 kA. It supports a current range of 15 Amps and features a rated insulation voltage of 10
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4.8
140G-H3F3-D10
This molded case circuit breaker features adjustable thermal and magnetic protection types and can handle a current range of up to 100 A. It has a rated insulation voltage of 1000 V and is capable of
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4.9
140G-H6C4-C25
This circuit breaker features a robust H frame configuration and operates with four poles. It supports a current range of 25 A and maintains a rated insulation voltage of 1000 V, along with an impulse
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4.6
140G-H6H4-D10
This circuit breaker operates within a 100 A current range and has a four-pole configuration. It provides a rated insulation voltage of 1000 volts and is designed to withstand impulse voltages of 8 kV
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4.8
140G-H6I3-C60
This circuit breaker is built within an H frame and designed to handle a current range of 60 A. It maintains a rated insulation voltage of up to 1000 V and withstands impulse voltages of 8 kV. Weighin
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140G-H6I3-D12
This circuit breaker utilizes an H frame construction and supports electronic LSIG protection. It accommodates a current range of 120 A. The rated insulation voltage is 1000 volts, and it can withstan
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4.6
140G-HC6C3-C20
This molded case circuit breaker has a current rating range of 20 A, making it versatile for different load requirements. It functions efficiently at a rated insulation voltage of 1000 volts and has a
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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.