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Allen Bradley 140G MCB 140G-J0F4-D20

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140G-J0F4-D20

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The 140G-J0F4-D20 is a robust molded case circuit breaker from Allen-Bradley, designed to efficiently protect electrical circuits. This model features a J-frame construction and supports a maximum current rating of 250 amps, with a high interrupting capacity of 100 kA, allowing it to handle significant fault currents safely.

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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 140G-J0F4-D20

ManufacturerAllen Bradley
Product TypeMolded Case Circuit Breaker
Product Line140G MCB
Part Number140G-J0F4-D20
Weight10.00 lbs (4.54 kg)
FrameJ
Amps250
Interrupting Rating100 kA
Protection TypeAdjustable Thermal/ Adjustable Magnetic
Poles4
Current Range200 A
Rated Insulation Voltage1000V
Rated Impulse Withstand Voltage8 kV
Mechanical Life240 Operations/hr.
Electrical Life120 Operations/hr.
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The Allen-Bradley 140G-J0F4-D20 is a molded case circuit breaker capable of high-performance protection in electrical systems. It has a J frame type of frame and can handle a maximum current rating of 250 amps. It is designed to endure harsh conditions with an interrupting rating of 100 kA, and it provides essential protection to machines against overloads and short circuits.

This circuit breaker is engineered with four poles, and it accommodates a variety of connection configurations to suit various installation needs. It incorporates adjustable options for both thermal and magnetic protection, providing flexibility in operation based on application requirements. The current for this breaker is rated at 200 A, allowing it to effectively support a variety of loads.

In terms of voltage, the 140G-J0F4-D20 can withstand up to 1000 volts of insulation voltage, making it suitable for high-voltage systems. It also features an impressive impulse withstand voltage rating of 8 kV, enhancing its reliability in transient surge conditions. Weighing approximately 7.72 pounds, it is compact enough for straightforward installations. The breaker is designed for longevity, with a mechanical operational life of 240 cycles per hour and an electrical service life of 120 cycles per hour to ensure durability in demanding environments.

Revision Part #Also known as
140G-J0F4-D20 Ser A140G-J0F4-D20/A, Series A, Rev A
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