- Bad communication ports
- Broken selector/key switches
- Dead batteries/Bad Battery connections
- Solid or Blinking RED OK Status Light
- Solid or Blinking RED RUN Status Light
- Solid or Blinking RED Fault Status Light
Free UPS Ground on All Orders!
+1 (919) 205-4392
Allen Bradley 140G MCB Repair
We offer extensive repairs for your 140G MCB. We keep many spare parts in stock so that we can repair your 140G MCB as efficiently and effectively as possible. Our standard repair lead time is 2-4 weeks. However, we can often repair your unit much faster if necessary. We can repair most issues with your 140G MCB and if for some reason we cannot repair your unit we will do our best to offer a refurbished unit at the repair cost, so that you can get a working unit back as soon as possible!
- 2 Year DO Supply Warranty
- Fast repairs at low costs
- No surprises or up-charges for difficult repairs
- Standard lead time of 2-4 weeks
- Extensive quality control and testing
Get a repair quote
Not an Authorized Distributor: DO Supply is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's
warranty does not apply. All of our products come with DO Supply's 2-year warranty.
Learn more
Hardware issues & error codes we repair
We repair all of the following hardware issues and error codes with your 140G MCB parts.
- Bad analog inputs or ouptus
- Bad digital input or outputs
- Bad relays (stuck on/off)
- Incorrect voltages on inputs or outputs
- Incorrect current on inputs or outputs
- DF1, DH-485, DH+, Profibus, Remote I/ (RIO) failures and more!
- Intermittent communication
- Solid RED/Blinkging RED communication lights
- Devicenet, Ethernet, ControlNet, RS232 ports.
- Missing CJC Jumpers
- Incorrect readings
- Failed inputs
- Dead power supplies
- Incorrect voltage
- Broken Plastic
- Poor Connections
- Bad Slots
Browse 140G MCB Repairs
Browse our catalog of repairable 140G MCB parts to get a quote.
140G-M5H4-D63
The molded case circuit breaker operates with a current range of 630 A and has a frame size classified as M. It functions effectively at a rated insulation voltage of 1000 volts and can handle impulse
Call
140G-M5H4-D80
The 140G-M5H4-D80 operates with a frame type M and is built to handle a maximum current range of 800 A. Its rated insulation voltage is 1000 volts, and it is capable of withstanding impulse voltages u
Call
140G-M5I3-D60
This circuit breaker supports a current range of 600 A and operates up to a rated insulation voltage of 1000 volts. It can withstand impulse voltages of 8 kV and includes a weight specification of 26.
Call
140G-M5I3-D63
As part of the M-frame series, this breaker operates effectively within a current range of 630 A. It has a rated insulation voltage of 1000V and withstands impulse voltages of up to 8 kV. Weighing 26.
Call
140G-M5I3-D80
With an M frame structure, this circuit breaker is equipped with electronic LSIG protection. It operates effectively at a rated insulation voltage of 1000 volts and is capable of withstanding impulse
Call
140G-M5I4-D60
This molded case circuit breaker operates within a current range up to 600 Amps. It supports a rated insulation voltage of 1000 volts, providing versatility for industrial applications. The device is
Call
140G-M5I4-D63
This breaker features an M frame and offers four poles. It has a current range up to 630 A, operating with a rated insulation voltage of 1000 volts. The unit can withstand impulse voltages of up to 8
Call
140G-M5I4-D80
The 140G-M5I4-D80 breaker's design includes an electronic LSIG protection mechanism and a four-pole configuration. This unit has a rated insulation voltage of 1000 volts and can withstand impulse volt
Call
140G-M5K3-D60
Designed within an M frame, the 140G-M5K3-D60 operates effectively with a current range of 600 A. The rated insulation voltage for this unit is 1000 volts, and it can withstand impulse voltages up to
Call
140G-M5K3-D63
Designed for 630 A current range, the 140G-M5K3-D63 has a rated insulation voltage of 1000 volts. It can withstand impulse voltages of 8 kV, offering durability in electrical systems. Weighing 26.68 p
Call
Showing 1,091-1,100 of
1,219
results
About 140G MCB
The Allen-Bradley 140G MCB series is a series of molded case circuit breakers whose usable value can be linked to absolutely all branches of industry, and they can also be implemented in buildings and homes. The 140G circuit breakers are 3-pole or 4-pole protective devices that are available with continuous current ratings between 125 and 3000 Amps. Their maximum operating voltage is 690 Volts AC. For standard electrical installations, customers usually buy circuit breakers with fixed thermal and magnetic protection options, but 140G units are also available with the adjustable thermal/fixed magnetic combination protection feature as well as with the molded case switch (isolator) options. The 140G circuit breaker housing is made of a special plastic that is a good insulator and that is not susceptible to wear and tear due to exposure to high temperatures. The mechanical construction is designed to prevent the jamming of moving parts, thus giving the devices a high level of safety in operation. The lifespan of these molded case circuit breakers is estimated to be over 25,000 mechanical operations.
The Allen-Bradley 140G molded case circuit breakers respond with lightning speed to the appearance of short-circuits, and the force separating the contacts inside of these units is proportional to the current flowing through them, so the speed of contact separation increases with the increase of the short-circuit current to which the device needs to respond. Internal options that can be factory installed on the 140G series circuit breakers are shunt trip, undervoltage release, alarm contacts, and auxiliary contacts. All the products from this series can be reverse-fed, which simplifies the installations in some applications. Allen-Bradley has certified that the 140G series circuit breakers with all their accessories meet the CE, UL, CSA, IEC, and the CCC standards.