140G-H2X4
This molded case circuit breaker features a frame type designated as H. It is capable of sustaining 4 poles and provides protection via a breaker frame. With a rated insulation voltage of 1000 volts a
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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-H3C4-C20
Designed as part of the 140G series, the 140G-H3C4-C20 has four poles and accommodates a current range of 20 A. It can operate at a rated insulation voltage of 1000 V and withstand impulse voltages up
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140G-H3I3-C60
Rated for a 60 Amp current, the 140G-H3I3-C60 operates with an interrupting capacity of 35 kA. Its insulation voltage is rated at 1000 V, while it can withstand impulse voltages of 8 kV. Additionally,
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140G-H3I4-D16
With a frame size of H, this circuit breaker supports a current range of up to 160 A. It operates efficiently with a rated insulation voltage of 1000 volts and withstands impulse voltages of 8 kV. Wei
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140G-H6I3-D16
Designed for performance, the 140G-H6I3-D16 operates with an adjustable current range of 160 Amps. It has a rated insulation voltage of 1000 V and can withstand impulse voltages up to 8 kV. This unit
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140G-HC0C3-C25
This circuit breaker supports a current range of 25 Amps and is designed with fixed thermal and magnetic protections. Rated for 1000 volts of insulation, it can also withstand impulse voltages up to 8
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140G-HC0C3-C50
This molded case circuit breaker operates within a current range of 50 A and is designed with a frame categorized as HC. It is constructed to withstand an impressive rated insulation voltage of 1000 v
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140G-HC0H3-C25
With a rated insulation voltage of 1000 V and an impulse withstand rating of 8 kV, the 140G-HC0H3-C25 is built to handle challenging electrical environments. It supports a current range of 25 A and ma
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140G-HC0I3-C25
This device operates within a current range of 25 Amps and offers an outstanding rated insulation voltage of 1000 volts. Additionally, it has a rated impulse withstand capability of 8 kV, ensuring res
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140G-HC6I3-C25
The 140G-HC6I3-C25 molded case circuit breaker features current capabilities within the range of 25 A. It operates under a rated insulation voltage of 1000V and can endure impulse withstand voltages u
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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.