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Allen Bradley 140M Circuit Breakers 140M-D8E-B40

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140M-D8E-B40

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The 140M-D8E-B40 motor protection circuit breaker from Allen Bradley is designed for reliable operation in 3-phase applications. It features a frame size D rating at 32 Amperes and can manage current ranges from 2.5 to 4 Amperes, ensuring efficiency and safety in various configurations.

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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 140M-D8E-B40

ManufacturerAllen Bradley
Product TypeMotor Protection Circuit Breaker
Product Line140M Circuit Breakers
Part Number140M-D8E-B40
UPC662468964425
Weight0.88 lbs (0.40 kg)
Frame RatingFrame size D, 32 Amperes
Electrical Connection TypeScrew connection
Trip Unit TypeAdjustable thermal/fixed magnetic trip unit
Current Range2.5 to 4 Amperes
Breaking CapacityHigh break
Rated Phase3-phase
Line Frequency50 to 60 Hertz
Rated Permanent Current4 Amperes
Operating Power1.5 kilowatts at 400 Volts AC and 0.75 kilowatts at 230 Volts AC
Overload Release Current2.5 Amperes
Magnetic Release Current52 Amperes per IEC standard
Total Power Loss6 Watts
Electrical Life Span100,000 operations (maximum)
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The Allen Bradley 140M-D8E-B40 is engineered as a motor protection circuit breaker that addresses the needs of 3-phase electrical systems. This unit has a frame size rated at D with a 32 Ampere capacity. The circuit breaker connects via screws, ensuring secure and stable electrical connections.

Current selection ranges between 2.5 Amperes and 4 Amperes, allowing versatility for different motor applications. Designed with a high breaking capacity, it efficiently interrupts faults while protecting connected devices. An adjustable thermal and fixed magnetic trip unit provides tailored protection against overloads and short circuits.

With an electrical life span of a maximum of 100,000 operations, the circuit breaker's durability ensures longevity in demanding environments. It can handle operating power up to 1.5 kilowatts at 400 Volts AC and 0.75 kilowatts at 230 Volts AC. The rated permanent current stands at 4 Amperes, which aligns with its specifications and operational limits.

For precise and reliable operation, the overload release current is fixed at 2.5 Amperes, while the magnetic release current meets IEC standards at 52 Amperes. The unit has a total power loss rating of 6 Watts during operation, contributing to its overall efficiency. This circuit breaker is suitable for a wide range of industrial applications requiring effective motor protection.