140G-H2C4-C16
This circuit breaker operates within a current range of 16 A and includes fixed thermal and magnetic protection features. Its rated insulation voltage is 1000 V, while it can withstand impulse voltage
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5.0
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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-H2C4-C35
This breaker with H frame accommodates a current range of 35 A and includes both fixed thermal and fixed magnetic protection options. Rated with an insulation voltage of 1000 V, it withstands impulse
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4.7
140G-H2F4-C80
This circuit breaker has a four-pole configuration and is capable of handling a current range of 80 A. The rated insulation voltage stands at 1000 V, ensuring reliable operation in various electrical
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5.0
140G-H3C3-C63
This device falls under the 140G series and is designated with an H frame. It supports a current range of 63 Amps and comes with a rated insulation voltage of 1000 V. The unit can withstand impulse vo
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4.8
140G-H3C4-C32
This circuit breaker features four poles and operates within a current range up to 32 Amps. It offers fixed thermal and magnetic protection types, providing enhanced safety in diverse applications. Ra
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4.6
140G-H3F4-D12
This circuit breaker operates within a range of 120 Amps and features adjustable thermal and magnetic protection. It is rated for insulation voltages up to 1000 V and can withstand impulse voltages of
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4.4
140G-H6H4-C60
Designed with advanced electronic LSI protection, this breaker operates within a current range of 60 amps. It maintains a rated insulation voltage of 1000 volts and is rated for impulse withstands of
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4.9
140G-HC0C3-C16
This breaker manages current up to 16 A and features fixed thermal and magnetic protection types for reliable disconnects. It provides rated insulation voltage up to 1000 V and withstands impulse volt
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4.7
140G-HC6C3-C35
This molded case circuit breaker operates within a rated insulation voltage of 1000 volts and can withstand impulse voltages of up to 8 kV. The current range for this device is set at 35 Amps. Measuri
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4.7
140G-I2C3-D10
This molded case circuit breaker features a current range accommodating up to 100 Amps, with a thermal trip rated at 100 Amps and a magnetic trip capability of 1000 Amps. It is designed for operationa
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4.9
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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.