140G-N6K4-E12-Z1
Belonging to the 140G series, this molded case circuit breaker features a four-pole configuration and a rated insulation voltage of 1000 volts. The device can handle impulse withstand voltages up to 8
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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.
40G-K15I3-D30
As part of Allen-Bradley's 140G series, the 40G-K15I3-D30 handles up to 30 A within its specified current range. It maintains a rated insulation voltage of 1000 volts and is capable of enduring impuls
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140G-H2H3-D16
This molded case circuit breaker offers electronic LSI protection and supports a current range of 160 A. It features a rated insulation voltage of 1000 V and can withstand impulse voltages of 8 kV. We
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140G-H2I4-C25
This unit offers an interrupting rating of 25 kA and operates with electronic LSIG protection. It accommodates a current range of 25 A, with a rated insulation voltage of 1000 V and a rated impulse wi
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140G-H2I4-D16
This circuit breaker is equipped with 4 poles and utilizes electronic LSIG technology for comprehensive protection. It operates within a current range of up to 160 A. Moreover, it supports a rated ins
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140G-H3H4-C60
This device utilizes an electronic LSI protection type and is designed with four poles. It operates effectively within a current range of 60 Amps and has a rated insulation voltage of 1000 Volts. The
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140G-H6C4-C16
This model has four poles and incorporates fixed thermal and magnetic trip mechanisms for reliable circuit protection. It operates within a current range of 16 A and supports a rated insulation voltag
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140G-HC0C3-C15
With a fixed thermal and fixed magnetic protection scheme, this circuit breaker supports a current range of up to 15 Amps. It has an insulation voltage rating of 1000 volts and can withstand impulse v
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140G-HC6H3-C25
The 140G-HC6H3-C25 operates with an electronic LSI protection type and can handle a current range of 25 A. It has a rated insulation voltage of 1000 volts and can withstand impulse voltages of up to 8
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140G-I2C3-C63
This unit employs fixed thermal and magnetic protection, ensuring reliability. It supports a current range of 63 A and is rated for 800V insulation voltage. The impulse withstand voltage is specified
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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.