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Allen Bradley 140G MCB 140G-K3H3-D40

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140G-K3H3-D40

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The 140G-K3H3-D40 is a molded case circuit breaker from Allen-Bradley, part of the Rockwell Automation family. It is designed with a frame size K and can handle a current of up to 400 Amps. The device has a notable interrupting rating of 35 kA, ensuring effective protection in case of overloads or short circuits.

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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-K3H3-D40

ManufacturerAllen Bradley
Product TypeMolded Case Circuit Breaker
Product Line140G MCB
Part Number140G-K3H3-D40
Weight12.00 lbs (5.44 kg)
FrameK
Amps400
Interrupting Rating35 kA
Protection TypeElectronic LSI
Current Range400 A
Rated Insulation Voltage1000 V
Rated Impulse Withstand Voltage8 kV
Mechanical Life120 Operations/hr.
Electrical Life60 Operations/hr.
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The 140G-K3H3-D40 molded-case circuit breaker is part of Rockwell Automation's Allen-Bradley lineup. This circuit breaker can manage a maximum current of up to 400 Amps. Its 35 kA interrupting capacity makes it suitable for applications where protection against high fault currents is essential. The breaker's frame type is designated as type K.

For protection, this model incorporates electronic LSI technology to enhance operational safety, providing features that significantly reduce the risk of equipment damage during electrical faults. This circuit breaker is rated for an insulation voltage of 1000 Volts, allowing it to perform effectively in demanding electrical environments. Furthermore, it can withstand impulse voltages of 8 kV, providing additional resilience against transient surges.

Weighing approximately 7.17 pounds, the device is compact enough for various installation conditions. The breaker's mechanical life is rated at 120 operations per hour, while the electrical life is rated at 60 operations per hour. Overall, the 140G-K3H3-D40 represents a robust and reliable solution for electrical protection needs.

Revision Part #Also known as
140G-K3H3-D40 Ser A140G-K3H3-D40/A, Series A, Rev A
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