140G-J6H3-C40
The 140G-J6H3-C40 functions efficiently within a current range of 40 Amps. It is rated for insulation voltage up to 1000 volts and withstands impulse voltages of 8 kV. Weighing 5.51 pounds, this unit
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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-J6I3-D25
With an electronic LSIG protection scheme, the 140G-J6I3-D25 ensures precise monitoring of electrical currents. It has a rated insulation capability of 1000 volts and can endure impulse voltages of up
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4.9
140G-JTC3-C35
This circuit breaker is rated for an insulation voltage up to 1000V and is capable of withstanding impulse ratings of 8 kV. It weighs 5.51 pounds and is engineered for high durability with a mechanica
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5.0
140G-JTC4-C25
This circuit breaker features four poles and operates at a current range of 25 Amps. It is equipped with fixed thermal and fixed magnetic protection, ensuring reliable circuit safety. The breaker is r
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4.7
140G-JTH4-D15
This four-pole circuit breaker supports a current range of 150 A and operates within a rated insulation voltage of 1000 V. It can withstand impulse voltages of up to 8 kV and weighs 7.72 lbs. This mod
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4.6
140G-K0H4-D30
This molded-case circuit breaker is engineered with 4 poles and supports 300 A of rated current. The breaker's rated insulation voltage reaches 1000V, and it also withstands impulse surges of up to 8
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140G-K0I3-D40
Designed for applications requiring high levels of power and protection, the 140G-K0I3-D40 supports a current rating of up to 400 A. It also supports insulation voltage ratings of 1000 V and withstand
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5.0
140G-K0K4-D30
With a rated insulation voltage of 1000V, this breaker offers reliable performance under various electrical conditions. It also withstands impulse voltages up to 8 kV. Weighing 9.15 pounds, the device
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5.0
140G-K3I4-D30
This circuit breaker features four poles and utilizes electronic LSIG protection. It operates with 300 Amps of rated current. With a rated insulation voltage of 1000V and an impulse withstand voltage
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5.0
140G-KC6H3-D40
This circuit breaker operates with a KC frame and has a robust current rating of 400 A. It can withstand rated insulation voltages up to 1000 volts and impulse withstand voltages of 8 kV. Weighing 7.1
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4.5
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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.