- 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-NS6K3-E12
Featuring a constructed frame type NS, this circuit breaker is capable of handling currents up to 1200 A. It operates at a rated insulation voltage of 1000 volts and can withstand impulse voltage surg
Call
140G-NS6K4-E12
This 4-pole circuit breaker operates with a frame size of NS, rated for a maximum current of 1200 A. It can handle insulation voltages up to 1000V and withstand impulse voltages of 8 kV. Weighing 27.5
Call
140G-R-BC12
This door escutcheon is specifically designed for R Frame installation and supports both 3-Pole and 4-Pole configurations. Rated at IP54, it protects against dust and moisture to a certain extent. The
Call
140G-R-SND
This accessory belongs to the 140G MCB series and accommodates frame size K-M. It functions effectively within a temperature range of 0 °C to 40 °C for both operation and storage. The device can susta
In Stock Ships Tomorrow
140G-R12I3-E20
The 140G-R12I3-E20 Molded Case Circuit Breaker has a Electronic LSIG Protection Type and a 175 lb Weight.
Call
140G-R12I3-E20-Z1
This circuit breaker is classified under frame R and features an interrupting rating of 125 kA. It also includes electronic LSIG protection for enhanced safety. The maximum current rating is 2000 A, a
Call
140G-R12I3-E25
This versatile circuit breaker operates within a frame size designated as R and accommodates a current range of 2500 A. It supports a rated insulation voltage of 1000 volts, making it suitable for hig
Call
140G-R12I3-E25-Z1
This model features an R frame and is capable of managing currents between 2500 A and 3000 A. With a rated insulation voltage of 1000 volts and an impulse withstand voltage of 12 kV, it is built for h
Call
140G-R12I3-E30
Designed for applications with significant electrical loads, this circuit breaker operates within a current range of 3000 A. It supports a rated insulation voltage of 1000 volts and withstands impulse
Call
140G-R12I3-E30-Z1
Designed with an R frame, the 140G-R12I3-E30-Z1 can handle up to 3000 A while providing electronic LSIG protection. This circuit breaker has an insulation voltage rating of 1000 volts and an impulse w
Call
Showing 1,201-1,210 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.