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Allen Bradley 140G MCB 140G-K3X4

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140G-K3X4

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The 140G-K3X4 circuit breaker from Allen-Bradley is built for robust electrical systems. It features a K frame design that accommodates a current rating of 400 amperes. It has an interrupting capacity of 35 kA, ensuring reliable fault protection.

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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-K3X4

ManufacturerAllen Bradley
Product TypeMolded Case Circuit Breaker
Product Line140G MCB
Part Number140G-K3X4
Weight10.00 lbs (4.54 kg)
FrameK
Amps400
Interrupting Rating35 kA
Protection TypeBreaker Frame
Poles4
Current RangeFrame Only
Rated Insulation Voltage1000V
Rated Impulse Withstand Voltage8 kV
Mechanical Life120 Operations/hr.
Electrical Life60 Operations/hr.
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The 140G-K3X4 is a high-capacity molded-case circuit breaker from Allen-Bradley and Rockwell Automation. This device is engineered for substantial electrical applications and is rated at 400 amps. Constructed in a K frame it possesses an interrupting rating of 35 kA, making it suitable for handling faults in various electrical circuits.

It is designed with four poles to provide optimal functionality across different electrical configurations. The 140G-K3X4's rated insulation voltage is 1000 volts, allowing it to operate safely in high-voltage scenarios. Additionally, it has an impulse withstand voltage rating of 8 kV, which enhances its durability against transient spikes in voltage.

The circuit breaker's weight of 9.15 pounds makes it manageable for installation purposes. The 140G-K3X4 is built for longevity, offering a mechanical life rated at 120 operations per hour and an electrical life rated at 60 operations per hour. These characteristics make it a reliable choice for protective applications in various industrial settings.

Revision Part #Also known as
140G-K3X4 Ser A140G-K3X4/A, Series A, Rev A
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