140G-J0F4-C80
This unit accommodates a current range of 80 A and offers adjustable thermal and magnetic protection. It can handle a rated insulation voltage of 1000 V and withstand impulse voltages of up to 8 kV. W
Call
4.6
Free UPS Ground on All Orders!
+1 (919) 205-4392
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.
Learn more
Browse 140G MCB
Browse available units in our catalog of 140G MCB.
140G-J0H3-C60
This circuit breaker operates with a rated current of up to 60 Amps. It can withstand rated insulation voltages up to 1000 Volts and has an impulse withstand voltage rating of 8 kV. The frame size of
Call
5.0
140G-J0H3-D15
This circuit breaker model features electronic LSI protection technology and operates with a rated current of up to 150 A. It supports a rated insulation voltage of 1000 V and can withstand impulse vo
Call
5.0
140G-J2F3-C80
This circuit breaker operates with adjustable thermal and and adjustable magnetic protection technology. It supports a current rating of 80 Amps and has a rated insulation voltage of 1000 V. Additiona
Available
4.9
140G-J2H3-D10
This breaker model has a J frame type and features a current rating of 100 A. It supports 250 A of maximum current and a 25 kA interrupting rating. Its rated insulation voltage is 1000 volts, and its
Call
5.0
140G-J2I3-C40
This circuit breaker has a J-frame size. It operates with a rated current of 40 Amps and a maximum current of 250 Amps. It incorporates an electronic LSIG protection mechanism. It is rated to handle i
Call
4.9
140G-J2I4-D15
This molded case circuit breaker boasts an electronic LSIG protection option and includes four poles. It operates with a current rating of 150 A and a maximum current of 250 A and supports insulation
Call
4.8
140G-J2I4-D25
This circuit breaker has a J frame and features four poles for functionality. It maintains a rated current of 250 A. The breaker's rated insulation voltage is 1000 V, and it can handle impulse withsta
Call
5.0
140G-J3C3-C40
The 140G-J3C3-C40 is a molded case circuit breaker with a maximum current rating of 250 Amps and an interrupting rating of 35 kA. Its rated current is 40 Amps and it operates at an insulation voltage
Call
4.7
140G-J3C4-C50
This circuit breaker features a J frame and incorporates fixed thermal and magnetic protection mechanisms. It supports a rated current of 50 A and 250 A of maximum current. It has a rated insulation v
Call
5.0
Showing 851-860 of
1,219
results
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.