140G-HTC3-C70
The 140G-HTC3-C70 Molded Case Circuit Breaker has a Fixed Thermal/ Fixed Magnetic Protection Type and a 2.65 lb Weight.
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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-M5H3-D80
This model features a frame size designated as M and supports a maximum current range of 800 A. It operates at a rated insulation voltage of 1000 volts and can withstand impulse voltages reaching 8 kV
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4.6
140G-N0H3-E12
This model operates within a frame size designated as N and is rated for 1200 A in current handling. The insulation voltage rating is 1000 volts, and it comfortably withstands impulse voltages as high
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4.6
140G-R-BC12
This door escutcheon is specifically designed for R Frame installation and supports both 3-Pole and 4-Pole configurations. Rated at IP54, it protects against dust and moisture to a certain extent. The
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140G-K-FCS06
This molded case circuit breaker has a K frame size and is equipped with a stainless steel flange handle for durability. It operates effectively within a temperature range from 0°C to 40°C and can be
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4.6
140G-MTH3-D60
This circuit breaker functions within a current range of 600 Amps, accommodating a significant load. Rated for an insulation voltage of 1000 volts and capable of withstanding impulse voltages of up to
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4.8
140G-JC6F3-D20
This circuit breaker is capable of managing a current range of up to 200 A. It supports adjustable thermal and magnetic protection, enhancing its versatility. The insulation voltage rating stands at 1
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5.0
140G-I2C3-D22
This circuit breaker, part of the I-frame series, is designed for currents up to 220 amperes. It includes both fixed thermal and magnetic protection mechanisms. The rated insulation voltage is set at
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4.9
140G-G6E3-D16
The 140G-G6E3-D16 molded case circuit breaker operates with adjustable thermal and fixed magnetic protection types. It supports a current range of 160 A alongside functions for thermal trip set at 160
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4.4
140G-I2C3-D17
This molded case circuit breaker supports a current range of 170 Amps and offers fixed thermal and magnetic protection mechanisms. It can handle an insulation voltage of up to 800 volts and has been t
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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.