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Allen Bradley 140M Circuit Breakers 140MT-C3E-A40

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140MT-C3E-A40

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The Allen Bradley 140MT-C3E-A40 is a motor protection circuit breaker designed for reliability in diverse applications. It features a 3-pole configuration, suitable for DIN-rail mounting, and offers a current range of 0.25 to 0.4 Amps.

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2 Year DO Supply Warranty
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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Rockwell Disclaimer: The product is used surplus. DO Supply is not an authorized surplus dealer or affiliate for the Manufacturer of this product. The product may have older date codes or be an older series than that available direct from the factory or authorized dealers. Because DO Supply is not an authorized distributor of this product, the Original Manufacturer's warranty does not apply. While many Allen-Bradley PLC products will have firmware already installed, DO Supply makes no representation as to whether a PLC product will or will not have firmware and, if it does have firmware, whether the firmware is the revision level that you need for your application. DO Supply also makes no representations as to your ability or right to download or otherwise obtain firmware for the product from Rockwell, its distributors, or any other source. DO Supply also makes no representations as to your right to install any such firmware on the product. DO Supply will not obtain or supply firmware on your behalf. It is your obligation to comply with the terms of any End-User License Agreement or similar document related to obtaining or installing firmware.

Technical specifications for 140MT-C3E-A40

ManufacturerAllen Bradley
Product TypeMotor Protection Circuit Breaker
Product Line140M Circuit Breakers
Part Number140MT-C3E-A40
Weight0.75 lbs (0.34 kg)
UPC191326561822
Poles3-pole
MountingDIN-rail
ConstructionOpen style
Current Range0.25–0.4 A
Connection TypeScrew terminals
Breaking CapacityStandard
Trip ClassClass 10
Insulation Voltage690 V
Frequency50/60 Hz
Magnetic TripFixed, 14×Ie
Rated Voltage690 VAC
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The model 140MT-C3E-A40 from Allen Bradley functions as a motor protection circuit breaker, tailored for safeguarding electric motors. This unit is constructed in an open style, making it ideal for installation on DIN rails, a common mounting approach in industrial setups.

Focusing on a specific operating range, this circuit breaker supports currents from 0.25 A to 0.4 A. This makes it highly suitable for various low-power motor applications. Users will appreciate the straightforward screw terminal connections that facilitate easy wiring and installation.

Rated for 690 VAC, the 140MT-C3E-A40 is designed to operate effectively within a frequency range of 50 to 60 Hz. Its breaking capacity is defined as standard, ensuring reliable performance during overload conditions. For trip characteristics, this circuit breaker is classified as Class 10, providing essential protection against overheating and fault conditions.

An additional feature includes a fixed magnetic trip set to 14 times the rated current, which ensures quick and efficient operation in case of a fault. With an insulation voltage rating of 690 V, this breaker is built to handle demanding environments while providing robust protection.