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Allen Bradley 140G MCB 140G-K3I4-D40

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140G-K3I4-D40

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The 140G-K3I4-D40 is a robust molded-case circuit breaker from Allen-Bradley. Engineered to handle 400 amps of current, it incorporates advanced electronic LSIG protection for reliability and efficiency across various applications.

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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-K3I4-D40

ManufacturerAllen Bradley
Product TypeMolded Case Circuit Breaker
Product Line140G MCB
Part Number140G-K3I4-D40
Weight10.00 lbs (4.54 kg)
FrameK
Amps400
Interrupting Rating35 kA
Protection TypeElectronic LSIG
Poles4
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 Allen-Bradley 140G-K3I4-D40 is a molded-case circuit breaker designed to meet high-performance standards. It operates under an impressive current rating of 400 amps, making it suitable for various heavy-duty applications.

It features a K frame size and includes four poles, allowing for effective circuit connection and control. The device provides electronic LSIG protection, which enables advanced safeguarding against overloads and short circuits. With an interrupting rating of 35 kA, the 140G-K3I4-D40 is capable of managing significant fault currents, making it reliable in critical electrical systems.

Operating at a rated insulation voltage of 1000 volts enhances this breaker’s utility across different electrical environments. Furthermore, it withstands impulse voltages rated at 8 kV, ensuring durability against transient events.

Weighing 9.15 pounds, this molded-case circuit breaker has been crafted for practical installation and maintenance. Its mechanical life rating is up to 120 operations per hour, while the electrical life rating is up to 60 operations per hour, providing reliability for continuous usage. Overall, the 140G-K3I4-D40 is ideal for applications requiring assured electrical protection and durability in demanding conditions.

Revision Part #Also known as
140G-K3I4-D40 Ser A140G-K3I4-D40/A, Series A, Rev A
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