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Allen Bradley 140G MCB 140G-J3F4-D17

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140G-J3F4-D17

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The 140G-J3F4-D17 is a molded case circuit breaker designed by Allen-Bradley, under Rockwell Automation. This breaker is capable of handling up to 250 Amps and boasts an interrupting capacity of 35 kA.

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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-D17

ManufacturerAllen Bradley
Product TypeMolded Case Circuit Breaker
Product Line140G MCB
Part Number140G-J3F4-D17
Weight10.00 lbs (4.54 kg)
FrameJ
Amps250
Interrupting Rating35 kA
Protection TypeAdjust Thermal/ Adjust Magnetic
Poles4
Current Range170 A
Rated Insulation Voltage1000 V
Rated Impulse Withstand Voltage8 kV
Mechanical Life240 Operations/hr.
Electrical Life120 Operations/hr.
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The molded case circuit breaker, identified as 140G-J3F4-D17, is a reliable product from Allen-Bradley, part of the Rockwell Automation family. Capable of handling 250 Amps, this device is structured with a J frame type. The module features an interrupting rating of 35 kA, providing necessary protection for high fault conditions. Designed with enhanced safety, it includes adjustable thermal and magnetic protection.

This circuit breaker includes four poles and supports a current range of 170 A, ensuring versatility in various applications. It is rated for insulation voltage of up to 1000 volts, making it a suitable choice for high-voltage environments. The 140G-J3F4-D17 also withstands impulse voltages rated at 8 kV, which adds durability against transient voltage events.

With a total weight of 7.72 pounds, this breaker provides a solid yet manageable structure for installation. Its mechanical lifespan is rated for 240 operations per hour, while its electrical lifespan is noted at 120 operations per hour, highlighting its reliability in regular use. The 140G-J3F4-D17 circuit breaker is an essential component for effective electrical management in demanding settings.

Revision Part #Also known as
140G-J3F4-D17 Ser A140G-J3F4-D17/A, Series A, Rev A
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