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Allen Bradley 140G MCB 140G-J3F4-D15

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140G-J3F4-D15

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The 140G-J3F4-D15 is a high-capacity molded case circuit breaker designed by Allen-Bradley, part of Rockwell Automation. This model is rated for 250 Amps and provides effective protection with an interrupting rating 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-D15

ManufacturerAllen Bradley
Product TypeMolded Case Circuit Breaker
Product Line140G MCB
Part Number140G-J3F4-D15
Weight10.00 lbs (4.54 kg)
FrameJ
Amps250
Interrupting Rating35 kA
Protection TypeAdjust Thermal/ Adjust Magnetic
Poles4
Current Range150 A
Rated Insulation Voltage1000V
Rated Impulse Withstand Voltage8 kV
Mechanical Life240 Operations/hr.
Electrical Life120 Operations/hr.
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The 140G-J3F4-D15 molded case circuit breaker from Allen-Bradley offers substantial protection in electrical systems. With a maximum current rating of 250 Amps, it is engineered to handle demanding loads. This device features a frame size designated as J, which includes four poles, enabling it to manage various applications effectively.

Designed with both adjustable thermal and magnetic protection, the 140G-J3F4-D15 can adapt its response characteristics based on the operational environment. Its interrupting rating stands at 35 kA, providing immediate response during fault conditions to safeguard equipment and circuits. The large current range allows operation up to 150 A, which accommodates a wide array of electrical devices.

The rated insulation voltage of 1000 V enables the breaker to function safely in high-voltage contexts, while the rated impulse withstand voltage of 8 kV protects against voltage surges. At a weight of 7.72 lbs, this unit is manageable for installation in various settings. It boasts a mechanical life expectancy of 240 operations per hour and an electrical life rating of 120 operations per hour, affirming its suitability for rigorous use in dynamic environments.

Revision Part #Also known as
140G-J3F4-D15 Ser A140G-J3F4-D15/A, Series A, Rev A
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