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Allen Bradley 140G MCB 140G-J3F4-D20

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140G-J3F4-D20

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The 140G-J3F4-D20 is a molded case circuit breaker designed for efficiency in electrical protection. It provides a significant current capacity of 250 Amps, along with an interrupting rating of 35 kA. This model features adjustable thermal and magnetic protection, optimizing safety in diverse 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 140G-J3F4-D20

ManufacturerAllen Bradley
Product TypeMolded Case Circuit Breaker
Product Line140G MCB
Part Number140G-J3F4-D20
Weight15.00 lbs (6.80 kg)
FrameJ
Amps250
Interrupting Rating35 kA
Protection TypeAdjustable Thermal/ Adjust 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 140G-J3F4-D20 molded case circuit breaker, part of the Allen-Bradley series by Rockwell Automation, is engineered for advanced electrical safety. This robust device accommodates a maximum current rating of 250 Amps, allowing it to handle significant loads effectively. Designed with a frame type of J, it features four poles to provide comprehensive circuit management. The interrupting capacity of this breaker stands at 35 kA, which means it can effectively tackle high fault currents without compromise.

Protection features include adjustable thermal and magnetic settings, making it adaptable for various operational environments. The current range is specified at 200 A, providing further flexibility for specific application needs. This model supports a rated insulation voltage up to 1000 volts, which is suitable for many industrial settings. It can also withstand impulse voltages rated at 8 kV, ensuring it remains effective under transient conditions.

The unit weighs approximately 7.72 pounds, making it manageable for installation and maintenance. The 140G-J3F4-D20 is designed for reliability, boasting a mechanical life expectancy of 240 operations per hour and an electrical life rating of 120 operations per hour, indicative of its durability in ongoing usage.

Revision Part #Also known as
140G-J3F4-D20 Ser A140G-J3F4-D20/A, Series A, Rev A
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