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Allen Bradley 140G MCB 140G-JTF4-D10

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140G-JTF4-D10

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The 140G-JTF4-D10 is a high-capacity molded case circuit breaker manufactured by Allen-Bradley. It operates at a maximum current of 250 Amps and is fitted with a rated insulation voltage of 1000 Volts, making it suitable for various applications. This unit features adjustable thermal and magnetic protection and has a trip unit for interrupting ratings.

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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-JTF4-D10

ManufacturerAllen Bradley
Product TypeMolded Case Circuit Breaker
Product Line140G MCB
Part Number140G-JTF4-D10
Weight3.00 lbs (1.36 kg)
FrameJ
Amps250
Interrupting RatingTrip Unit
Protection TypeAdjust Thermal/ Adjust Magnetic
Poles4
Current Range100 A
Rated Insulation Voltage1000 V
Rated Impulse Withstand Voltage8 kV
Mechanical Life240 Operations/hr.
Electrical Life120 Operations/hr.
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The Allen-Bradley 140G-JTF4-D10 is a molded case circuit breaker engineered for substantial electrical protection. This device operates on a maximum input of 250 Amps and is ideal for heavy-duty applications. Designed within a J frame, it accommodates four poles, making it versatile for different needs.

The breaker features adjustable thermal and magnetic protection sourced from a trip unit. This allows users to fine-tune the response to overload and fault conditions. It effectively manages current levels, with a range bracketed at 100 Amps. The rated insulation voltage is 1000 Volts, making this breaker fit for high-voltage environments.

Moreover, it can handle impulse withstand voltages up to 8 kV, ensuring operational safety during electrical surges. Weighing 7.72 pounds, it is practical for installation purposes. The mechanical and electrical life ratings stand at 240 and 120 operations per hour, respectively. This durability ensures the 140G-JTF4-D10 maintains reliable service in demanding industrial applications.

Revision Part #Also known as
140G-JTF4-D10 Ser A140G-JTF4-D10/A, Series A, Rev A
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