140G-S1
This flange handle supports fixed magnetic applications and is specifically used with Flex Cable Operators. It is designed for storage and operational conditions between 0 °C and 40 °C, and it withsta
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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 available units in our catalog of 140G MCB.
140G-J-FCX06
This cable operator is constructed to function within NEMA ratings of 1, 3, 4, and 4X. It can operate efficiently at altitudes of up to 1000 meters and supports a temperature range between 0 °C to 40
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140G-J-FMXB04
This cable mechanism is compatible with 3-pole devices and can effectively support circuit breakers. Its NEMA Type 1/3/3R/12/4/4X enclosure rating allows it to maintain reliability in various applicat
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140G-H2C3-C30-KA
This molded case circuit breaker provides fixed thermal and magnetic protection. It is capable of operating at a rated voltage of 690 V and functions effectively across a frequency range of 50 Hz to 6
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140G-G6C3-C15-MT
This circuit breaker type is configured with three poles and can handle a rated current of 15 Amps. Its thermal-magnetic protection mechanism allows for robust functionality, and it has a rated impuls
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140G-H2C3-C20-KA
This circuit breaker is built on an H frame platform, featuring a fixed magnetic trip and is rated for a maximum interrupt capacity of 25 kA at 480 volts. It operates effectively at voltage levels of
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140G-I-FMXB04
This circuit breaker includes three poles and supports flexible cable types. Designed for panel or DIN rail mounting, it has an interrupt rating of 25 kA. The unit's painted metal handle with a bail a
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140G-G2C3-C50-KA
This circuit breaker is rated for 600 volts AC with a thermal-magnetic protection type. It features three poles and an interrupt rating of 25 kA, making it suitable for various applications. The insul
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140G-N-TC3H
Featuring a size of 2.76 inches, this terminal cover is designed for installations with temperatures ranging from 0 °C to 40 °C. It maintains performance within a maximum humidity level of 80% (non-co
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140G-G6C3-C20-MT
This molded case circuit breaker is equipped with 3 poles and conforms to the G frame size specifications. It has a breaking capacity of 65 kA for both AC and DC circuits. The breaker utilizes a panel
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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.