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Allen Bradley 140M Circuit Breakers 140M-F8N-C45

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140M-F8N-C45

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The 140M-F8N-C45 from Allen Bradley is designed as a motor protection circuit breaker with a rated current capacity of 45 A. Suitable for three-phase applications, this unit features high break interrupting ratings and offers robust protection for motors up to 40 kW at 690 V.

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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 140M-F8N-C45

ManufacturerAllen Bradley
Product TypeMotor Protection Circuit Breaker
Product Line140M Circuit Breakers
Part Number140M-F8N-C45
UPC662468964722
Weight1.81 lbs (0.82 kg)
Frame Rating45 A
Interrupting RatingHigh Break Interrupting
Current Rating45 A
Frame TypeFrame F
Magnetic Trip Current585 A
Phase Type3 Phase
Maximum Power @ 230 V13 kW
Maximum Power @ 400/415 V22 kW
Maximum Power @ 500 V30 kW
Maximum Power @ 690 V40 kW
Operating Temperature Range-25 to 60°C
Storage Temperature Range-40 to 80°C
Pollution DegreeDegree 3
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The Allen Bradley model 140M-F8N-C45 is a dedicated motor protection circuit breaker engineered for safeguarding motors in various applications. This breaker supports a frame rating and current rating of 45 A, ensuring adequate protection for motors operating within this threshold.

This circuit breaker can manage high break interrupting ratings to effectively handle overloads and short circuits. It is suitable for use in three-phase setups, with versatile maximum power capacities tailored for different voltage levels. At 230 V, it can manage power levels up to 13 kW; it increases to 22 kW at 400/415 V, 30 kW at 500 V, and reaches 40 kW for operations at 690 V.

Designed to operate efficiently in ambient conditions ranging from -25°C to 60°C, it is built to withstand harsh environments. Furthermore, the storage temperature range from -40°C to 80°C ensures that the product can be safely kept when not in use. This device is classified under pollution degree 3, indicating its robustness against contamination. The magnetic trip current stands at 585 A, ensuring quick disconnection in overload situations, thereby maintaining safety and reliability in electrical systems.