140G-M0I4-D60
This device supports up to 600 Amps in its operational current range and is built with a four-pole configuration. Rated for insulation voltage up to 1000 volts, it also withstands impulse voltages of
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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-M6H3-D63
This circuit breaker operates with a current range of 630 Amps and has a rated insulation voltage of 1000 volts. It withstands impulse voltages up to 8 kV. With a weight of 26.68 pounds, it features a
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140G-M6I3-D80
This model operates with a current range of 800 A and features an M frame type. Rated for insulation at 1000 volts, it can withstand impulse voltages of up to 8 kV. This device weighs 26.68 pounds and
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4.8
140G-N0K3-E12-Z1
This molded case circuit breaker features an Electronic LSIG protection type and is enclosed in an N-frame design. The unit accommodates a current range of 1200 A and is rated for insulation voltages
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4.8
140G-R12I3-E30
Designed for applications with significant electrical loads, this circuit breaker operates within a current range of 3000 A. It supports a rated insulation voltage of 1000 volts and withstands impulse
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4.7
140G-HC6C3-C25
This circuit breaker features a maximum current of 125 amps with a fixed thermal and magnetic protection type. It operates efficiently across a current range of 25 A and has a rated insulation voltage
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4.6
140G-H3F4-D16
With a current range of 160 A, the 140G-H3F4-D16 functions effectively under various conditions. It has a rated insulation voltage of 1000 V and can withstand impulse voltages up to 8 kV, ensuring dur
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140G-H6I4-D12
With four poles and an electronic LSIG protection type, the 140G-H6I4-D12 operates within a current range of 120 A. It maintains a rated insulation voltage of 1000 V and handles impulse withstand volt
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5.0
140G-HC0F3-C80
This model features adjustable thermal and magnetic protection types, along with a current range of up to 80 A. It maintains a rated insulation voltage of 1000 volts and an impulse withstand voltage o
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5.0
140G-J2H3-D15
This circuit breaker has an interrupting capacity of 25 kA and is built with electronic LSI protection features. It operates effectively at a rated current of 150 A and has a rated insulation voltage
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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.