140G-N6K3-E12-Z1
This circuit breaker operates within a range of 1200 A and features an N frame. It has a rated insulation voltage of 1000 volts and can endure impulse voltages up to 8 kV. Weighing 21.39 pounds, it su
Call
4.7
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-H3C3-C60
This molded case circuit breaker is built upon an H frame and features fixed thermal and magnetic protection types. The current range it supports is set at 60 A while maintaining a rated insulation vo
Available
5.0
140G-K3H4-D30
Configured with four poles, the 140G-K3H4-D30 supports a rated current of 300 A and operates effectively at insulation voltages of 1000 volts. The breaker can withstand impulse voltages up to 8 kV. It
Call
4.9
140G-H0C4-C16
This specific circuit breaker operates with a frame classification of H, accommodating a current range that reaches 16 Amps. The device features four poles and incorporates fixed thermal and magnetic
Call
5.0
140G-H0F4-D11
This molded case circuit breaker provides an interrupting capability of 100 kA. It operates effectively with a rated insulation voltage of 1000 volts and can withstand impulse voltages up to 8 kV. The
Call
5.0
140G-H15F4-D16
This unit, categorized within the 140G MCB series, supports four poles and offers adjustable thermal and magnetic protection features. It enables operation in a current range that reaches up to 160 A.
Call
4.8
140G-H15H4-C25
This 140G series unit operates with an electronic LSI protection type and maintains a current range of 25 A. It supports a rated insulation voltage of 1000 V and withstands an impulse voltage of 8 kV.
Call
4.6
140G-H15I4-D10
Part of the 140G series, the 140G-H15I4-D10 operates at a rated insulation voltage of 1000 volts and a rated impulse withstand voltage of 8 kV. It has a current range of 100 A with mechanical life rat
Call
5.0
140G-H2F4-D16
This circuit breaker features four poles and supports an adjustable thermal and magnetic trip mechanism. The maximum current range is set at 160 Amps. It also provides a rated insulation voltage of 10
Available
5.0
140G-H6C4-C40
With four poles, the 140G-H6C4-C40 model can handle currents up to 40 amps. Its protection capabilities come from fixed thermal and magnetic mechanisms. Additionally, the rated insulation voltage for
Available
4.9
Showing 431-440 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.