- 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
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Allen Bradley 140U MCB Repair
We offer extensive repairs for your 140U MCB. We keep many spare parts in stock so that we can repair your 140U 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 140U 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.
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Hardware issues & error codes we repair
We repair all of the following hardware issues and error codes with your 140U 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 140U MCB Repairs
Browse our catalog of repairable 140U MCB parts to get a quote.
140U-N5L3-E12
The Allen-Bradley Bulletin 140U 140U-N5L3-E12 circuit breaker is an assembled 3-pole circuit breaker with an electronic trip unit. The protection type available on the electronic trip unit is LS (long
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140U-N6L3-E12
This 3-pole circuit breaker features a short-time protection type and boasts an interrupting capacity between 60 kA and 69 kA. It is suitable for storage conditions ranging from 0 °C to 40 °C and can
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140U-Q3D3-D60
This device supports three poles and operates efficiently within a continuous current limit of 600 A. It is rated for operational voltages of 600 VAC per UL/CSA standards and 690 VAC following IEC spe
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140U-Q3X3
This circuit breaker operates with a current rating of 600 A and supports 3-pole configurations. It features a rated insulation voltage of 750 VAC (UL/CSA) and 1000 V AC (IEC). The interrupting rating
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140U-Q6D3-D35
Operating with a voltage rating of 400 or 480 V, this circuit breaker is rated for a maximum ambient temperature of 40°C and a minimum of 0°C for effective operation. The storage conditions allow for
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140U-Q6D3-D50
This circuit breaker is configured with three poles and maintains a maximum operational voltage of 690 V AC. It has a fixed thermal trip setting at 500 A, ensuring accurate and reliable performance. T
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140U-Q6D3-D60
This circuit breaker incorporates a fixed thermal and adjustable magnetic trip type for effective overload protection. It has impressive interrupting capacities, including 100 kA at 240V AC and 70 kA
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140U-Q6S3-D60-A
This switch circuit breaker operates efficiently with a rated current of 600 A and is suitable for frequencies ranging from 50 Hz to 60 Hz. It supports various voltage ratings, providing flexibility w
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140U-Q6X3
This molded case circuit breaker supports a rated current of 600 A and is configured for three poles, allowing it to serve in critical applications. Its breaking capacities include 100 kA at 220-240 V
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140U-QTD3-D45
This circuit breaker has a Q frame size and offers three poles for versatile connectivity. It has a thermal-magnetic protection type for dependable operation. Rated for frequencies from 50 Hz to 60 Hz
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About 140U MCB
The 140U MCB circuit breaker series is a molded case circuit breaker series manufactured by Allen-Bradley. Circuit breakers are electrical devices that are capable of carrying and breaking currents under normal and abnormal circuit conditions. The series is certified with the CE rating and the cULus listing. The breakers in this series meet the CSA, IEC, and the UL compliances. The 140U series is a series of compact circuit breakers which use less panel space and have more features. The circuit breakers in this series are 45 millimeters wide,102 millimeters high, and 85 millimeters deep. They offer higher interruption ratings of 65 kA at 480 Y/277 Volts. They allow for higher overall short circuit ratings. The 140U MCB series provides up to 6 times the high interrupt rating that traditional circuit breakers deliver. This series comes with current limiting features. It offers high interrupt ratings for both 2-pole and 3-pole setups. The circuit breaker is 100% rated for up to 15 Amps of current. These circuit breakers are ideal for feeder circuits which include small cabinets, distribution panels, branch circuit protection, transformers, and heaters. They are also used in control circuits like control transformers and power supplies.
The 140U MCB series is also HACR certified (Heating, Air Conditioning, and Refrigeration). These circuit breakers can be used for global applications. The 140U MCB series is a cost-effective circuit breaker series. These breakers use compact bus bars and feeder blocks which helps to reduce the wiring errors and the installation costs. The circuit breakers can be selected on the basis of the rated current, magnetic trip, breaking capacity, interrupting rating, and the number of poles. These breaker devices can be operated at temperatures between -25 and 60 degrees Celsius. The breakers can also take accessories manufactured by Allen-Bradley.