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Allen Bradley 140G MCB 140G-KTF4-D40

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140G-KTF4-D40

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The 140G-KTF4-D40 from Allen-Bradley is a robust molded-case circuit breaker designed for high-current applications. Capable of handling 400 Amps of maximum current, this device features adjustable thermal and magnetic protection for tailored performance.

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Ships from Raleigh, NC
2 Year DO Supply Warranty
Not an Authorized Distributor: DO Supply is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All of our products come with DO Supply's 2-year warranty.
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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-KTF4-D40

ManufacturerAllen Bradley
Product TypeMolded Case Circuit Breaker
Product Line140G MCB
Part Number140G-KTF4-D40
Weight2.81 lbs (1.28 kg)
FrameK
Amps400
Interrupting RatingTrip Unit
Protection TypeAdjustable Thermal/ Adjustable Magnetic
Poles4
Current Range400 A
Rated Insulation Voltage1000V
Rated Impulse Withstand Voltage8 kV
Mechanical Life120 Operations/hr.
Electrical Life60 Operations/hr.
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The Allen-Bradley 140G-KTF4-D40 is engineered as a molded case circuit breaker with a K frame. This component is suitable for scenarios that require a high current capacity, and it can handle 400 Amperes of maximum current. It offers robust protection options through adjustable thermal and magnetic trip mechanisms, allowing for customized settings to suit specific operational needs. The interrupting capacity of this unit is determined by its trip unit configuration.

This circuit breaker features four poles, making it versatile for different configurations in industrial applications. Its rated insulation voltage of 1000 volts assures safety, which is critical for high-voltage environments. Additionally, its rated impulse withstand voltage of 8 kV provides impressive resistance to short-duration voltage spikes, thus ensuring reliability.

At 9.15 pounds, the 140G-KTF4-D40 is constructed for durability and ease of installation. It is engineered for heavy usage, indicated by a mechanical life rating of 120 operations per hour and an electrical life rating of 60 operations per hour. Overall, this circuit breaker is a trustworthy choice for maintaining electrical systems efficiently and safely.

Revision Part #Also known as
140G-KTF4-D40 Ser A140G-KTF4-D40/A, Series A, Rev A
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