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Allen Bradley 140G MCB 140G-J3F4-D10

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140G-J3F4-D10

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The 140G-J3F4-D10 model is a molded case circuit breaker manufactured by Allen-Bradley, part of Rockwell Automation. This circuit breaker is rated for 250 amps and designed with four poles. It features adjustable thermal and magnetic protection, along with a 35 kA interrupting rating for high fault conditions.

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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-D10

ManufacturerAllen Bradley
Product TypeMolded Case Circuit Breaker
Product Line140G MCB
Part Number140G-J3F4-D10
Weight10.00 lbs (4.54 kg)
FrameJ
Amps250
Interrupting Rating35 kA
Protection TypeAdjust Thermal/ Adjust Magnetic
Poles4
Current Range100 A
Rated Insulation Voltage1000V
Rated Impulse Withstand Voltage8 kV
Mechanical Life240 Operations/hr.
Electrical Life120 Operations/hr.
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Allen-Bradley's 140G-J3F4-D10 is a highly dependable molded case circuit breaker designed to manage significant electrical loads. Specially configured with a J-frame design, it operates at a maximum rating of 250 Amps, making it suitable for heavy-duty applications. The breaker features four poles to support a strong connection arrangement. With an interrupting capacity of 35 kA, it ensures protection during fault conditions.

In terms of safety mechanisms, the 140G-J3F4-D10 utilizes adjustable thermal and magnetic protection to respond effectively to varying load conditions. It operates within a current range of up to 100 A, allowing it to adapt to different installation requirements. The insulation voltage rating is set at a substantial 1000 volts, allowing for robust performance in demanding environments.

Additionally, this breaker can withstand impulse withstand voltage of 8 kV, providing extra reliability against transient voltage spikes. Weighing in at 7.72 pounds, it is robust yet manageable for installation. The expected mechanical life is rated at 240 operations per hour, while the electrical life stands at 120 operations per hour. These features combine to ensure that the 140G-J3F4-D10 molded case circuit breaker maintains a high level of reliability and safety for users in various industrial settings.

Revision Part #Also known as
140G-J3F4-D10 Ser A140G-J3F4-D10/A, Series A, Rev A
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