140G-I2C3-D11
This model handles a maximum current of 110 A and has specific trip settings for thermal protection at 110 A and magnetic protection at 1100 A. It operates efficiently at a rated insulation voltage of
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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-I3C3-C90
This circuit breaker employs fixed thermal and fixed magnetic protection mechanisms. It has a thermal trip set at 90 A and magnetic trip set at 900 A. This model is rated for insulation up to 800 volt
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140G-I3C3-D11
This specific breaker offers an interrupting rating of 35 kA and is rated for 800 volts in terms of insulation. It can handle a current range of up to 110 amps thermally and has a magnetic trip settin
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140G-I3C4-D17
Designed for versatile applications, this circuit breaker operates within a current range of up to 170 Amps. It has an insulation voltage rating of 800 volts and withstands impulse voltages of 8 kV. W
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4.9
140G-J0C3-C50
This device is designed with a J-frame and rated for current levels of 50 A. Protection is provided through fixed thermal and magnetic mechanisms. It can withstand an insulation voltage of 1000 volts
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4.7
140G-J0F3-D17
This molded case circuit breaker operates within a current range of 170 A. It features adjustable thermal and magnetic protection systems. The insulation voltage is rated at 1000 volts, and it can wit
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4.6
140G-J2C3-C40
This circuit breaker includes fixed thermal and fixed magnetic protection technology and supports a current rating of 40 A and a maximum current rating of 250 A. It has a rated insulation voltage of 1
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140G-J2C3-C70
This circuit breaker includes fixed thermal and fixed magnetic protection technology and operates with a rated current of 70 Amps and up to 250 Amps of maximum current. It supports a rated insulation
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140G-J2C4-C32
This four-pole circuit breaker operates with a current rating of 32 Amps and a maximum current of 250 Amps. It incorporates fixed thermal and fixed magnetic protection mechanisms. The rated insulation
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140G-J2H4-D15
This circuit breaker operates with a rated insulation voltage of 1000 V and is designed to handle an interrupting rating of 25 kA. Its electronic LSI protection technology facilitates enhanced fault d
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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.