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Allen Bradley 140G MCB 140G-JTF4-D20

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140G-JTF4-D20

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The 140G-JTF4-D20 is a robust molded case circuit breaker from Allen-Bradley, under the Rockwell Automation label. Designed to participate in various electrical safeguarding applications, this breaker operates at a rating of 250 Amps. It features four poles ensuring reliable functionality while incorporating both adjustable thermal and magnetic protection options.

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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-D20

ManufacturerAllen Bradley
Product TypeMolded Case Circuit Breaker
Product Line140G MCB
Part Number140G-JTF4-D20
Weight3.00 lbs (1.36 kg)
FrameJ
Amps250
Interrupting RatingTrip Unit
Protection TypeAdjust Thermal/ Adjust Magnetic
Poles4
Current Range200 A
Rated Insulation Voltage1000 V
Rated Impulse Withstand Voltage8 kV
Mechanical Life240 Operations/hr.
Electrical Life120 Operations/hr.
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Allen-Bradley's 140G-JTF4-D20 molded case circuit breaker is engineered for effective protection in electrical systems. The maximum current rating for this unit is 250 amps, which makes it suitable for various applications requiring dependable circuit management. The integrated interrupting rating features a trip unit that allows for effective fault current interruption and enhanced safety.

This device accommodates four poles, enabling multi-phase wiring and flexibility in installation. Its current range is specified at 200 A, making it a versatile solution for electrical protection. With a rated insulation voltage of 1000 volts, the breaker is robust enough to manage high-voltage environments, while the impulse withstand voltage rating of 8 kV provides protection against transient voltage spikes.

Weighing 7.72 pounds, the unit's compact design facilitates easy installation. The mechanical life of the 140G-JTF4-D20 is rated at 240 operations per hour, ensuring durability under regular use. It also has an electrical life expectancy of 120 operations per hour, making it a reliable component for continuous electrical operations. This combination of specifications makes the Allen-Bradley 140G-JTF4-D20 a critical asset in maintaining safe and efficient electrical systems.

Revision Part #Also known as
140G-JTF4-D20 Ser A140G-JTF4-D20/A, Series A, Rev A
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