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Allen Bradley 140M Circuit Breakers 140M-J8E-D10

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140M-J8E-D10

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The 140M-J8E-D10 is a J-frame motor protection circuit breaker from Allen Bradley that provides effective protection for motors. With a rated operational current of 100 A and a voltage rating of 690 V AC, it is designed for high-efficiency applications.

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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-J8E-D10

ManufacturerAllen Bradley
Product TypeMotor Protection Circuit Breaker (MPCB), J-frame
Product Line140M Circuit Breakers
Part Number140M-J8E-D10
Weight15.00 lbs (6.80 kg)
UPC885630441733
Rated Operational Current100 A
Rated Operational Voltage690 V AC
Rated Insulation Voltage690 V
Rated Impulse Withstand Voltage6 kV
Short-Circuit Breaking Capacity (Icu)25 kA at 690 V AC
Rated Service Short-Circuit Capacity (Ics)50% of Icu
Trip Unit TypeThermal-Magnetic
Adjustable Thermal Overload Setting Range80–100 A
Magnetic Trip SettingFixed at 10 × In
Number of Poles3 Poles
Mechanical Endurance50,000 operations
Electrical Endurance25,000 operations
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In the realm of motor protection, the Allen Bradley 140M-J8E-D10 circuit breaker stands out as a J-frame model designed for durability and performance. It is rated for an operational current of 100 amperes and a maximum operational voltage of 690 volts AC, making it suitable for various high-voltage motor applications. This unit also supports a rated insulation voltage of 690 volts.

The 140M-J8E-D10 possesses a rated impulse withstand voltage of 6 kilovolts, enhancing its resilience against transient overvoltage conditions. Constructed to handle short-circuit situations, it features a breaking capacity (Icu) rated at 25 kilovolts at an operational voltage of 690 volts AC. The rated service short-circuit capacity (Ics) is defined as 50% of Icu, ensuring reliable performance under fault conditions.

The trip unit type is thermal-magnetic, providing effective overload and short-circuit protection. Users benefit from an adjustable thermal overload setting that ranges from 80 to 100 A. Simultaneously, the magnetic trip is fixed at ten times the rated current (In), thus offering instant protection against short circuits.

Designed with three poles, this breaker demonstrates robust mechanical endurance, supporting up to 50,000 operations. Its electrical endurance ensures it functions efficiently for approximately 25,000 operations, highlighting its reliability in demanding environments. As indicated by the UPC 885630441733, the 140M-J8E-D10 motor protection circuit breaker from Allen Bradley is an essential component for high-performance motor control.