Allen Bradley
140G-G2C4-C15
The 140G-G2C4-C15 variant is an advanced molded case circuit breaker with four poles. It provides a notable interrupting rating of 25 kA and accommodates a current range of 15 Amps at its thermal trip
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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.
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140G-G3C4-C80
The molded case circuit breaker 140G-G3C4-C80 features a 4-pole configuration and supports current levels of up to 80 amps. This model boasts fixed thermal and magnetic protection, with a rated insula
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140G-G6C3-C45-MT
This circuit breaker has three poles and utilizes a thermal magnetic trip unit with a fixed magnetic trip. It includes essential accessories such as an auxiliary switch and a mechanical trip indicator
From $561In Stock Ships Today - Allen Bradley
140G-H15C4-C35
This four-pole circuit breaker operates within a current range of 35 A. It is rated for 1000 V insulation voltage and has an impulse withstand rating of 8 kV. The unit weighs approximately 3.53 pounds
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140G-J2C3-C50
This circuit breaker operates with a rated current of 50 A, a maximum current of 250 A, and at an effective insulation voltage of 1000 volts. The unit endures up to 8 kV of impulse voltage and has a s
From $1,500In Stock Ships Today - Allen Bradley
140G-M6K3-D80
This circuit breaker is constructed with a frame classified as M and is capable of managing a current of 800 A. Rated for insulation of 1000 volts, it also withstands impulse voltages of up to 8 kV. T
From $12,453Available - Allen Bradley
140G-G2C4-C16
The 140G MCB series features circuit breakers designed for performance and reliability. The 140G-G2C4-C16 model is configured with four poles and offers a current operating range starting at 16 amps.
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140G-H0X4
This molded case circuit breaker operates with a rated insulation voltage of 1000 volts and is rated to withstand impulse voltages up to 8 kV. Featuring a frame size specified for 4 poles, it supports
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140G-KTI3-D40
This circuit breaker operates within a current range of 400 A. It boasts a rated impulse withstand voltage of 8 kV, ensuring resilience against voltage spikes. The unit weighs 7.17 pounds and is desig
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140G-G6C4-C45
This model features four poles and is designed with fixed thermal and fixed magnetic protection mechanisms. It accommodates current levels up to 45 amps and has a thermal trip setting also rated at 45
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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.