140G-H15C3-C35
The molded case circuit breaker belonging to the 140G series is designed to operate at a maximum rated insulation voltage of 1000 volts. This particular model features an operational current range of
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4.6
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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-H15C3-C70
The 140G-H15C3-C70 circuit breaker is characterized by its fixed thermal and fixed magnetic protection types. It functions within a current range of up to 70 A. The insulation voltage rating is noted
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5.0
140G-H3C3-C16
The Allen-Bradley 140G-H3C3-C16 circuit breaker features an H frame design. Its operating parameters include a current range of 16 A and a rated insulation voltage of 1000 V. Additionally, it has a ra
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4.7
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-H6F4-D11
This molded case circuit breaker, fitted with an H frame, is engineered to handle a rated current of 125 Amps. It features an impressive interrupting capacity of 65 kA. With 4 poles, it is suitable fo
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4.7
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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4.6
140G-HC6F3-C80
This model operates with a current range of up to 80 Amps and has a rated insulation voltage of 1000 V. Its impulse withstand voltage is rated at 8 kV. Built for durability, the unit weighs approximat
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4.9
140G-J3C3-C32
This circuit breaker operates within a J frame and includes fixed thermal and fixed magnetic protection technology. It manages 32 A of rated current and 250 A of maximum current. It is rated for 1000V
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140G-K0I3-D40
Designed for applications requiring high levels of power and protection, the 140G-K0I3-D40 supports a current rating of up to 400 A. It also supports insulation voltage ratings of 1000 V and withstand
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140G-K6K3-D40
This circuit breaker is designed with a K frame and supports current handling at up to 400 A. The insulation voltage rating reaches 1000 Volts, and it withstands impulse voltages up to 8 kV. It weighs
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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.