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Allen Bradley 140G MCB 140G-K3F4-D30

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140G-K3F4-D30

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The 140G-K3F4-D30 is a molded case circuit breaker offered by Allen-Bradley, a brand under Rockwell Automation. This breaker operates with a maximum current rating of 400 Amps and provides an interrupting capacity of 35 kA. Its design includes adjustable thermal and magnetic protection, enhancing its operational flexibility.

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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-K3F4-D30

ManufacturerAllen Bradley
Product TypeMolded Case Circuit Breaker
Product Line140G MCB
Part Number140G-K3F4-D30
Weight12.00 lbs (5.44 kg)
FrameK
Amps400
Interrupting Rating35 kA
Protection TypeAdjustable Thermal/ Adjustable Magnetic
Poles4
Current Range300 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-K3F4-D30 is a reliable molded case circuit breaker designed for industrial applications. It supports a maximum current of 400 Amps, which enables it to effectively manage significant electrical loads. With an interrupting rating of 35 kA, the breaker can handle severe fault conditions, ensuring safety and protection for connected equipment.

Designed with a K frame, this device incorporates adjustable thermal and magnetic protection mechanisms. This feature allows for tailored settings based on specific application requirements. The unit accommodates four poles, providing versatility in various configurations.

Its operational characteristics include a rated insulation voltage of 1000 V, making it suitable for high-voltage environments. Additionally, the rated impulse withstand voltage is set at 8 kV, ensuring the breaker can handle transient voltage spikes, which can occur in industrial settings.

Weighing in at 9.15 pounds, the 140G-K3F4-D30 circuit breaker is constructed to deliver dependable service. It is engineered for operational longevity, with a mechanical life rating of 120 operations per hour and an electrical life rating of 60 operations per hour, affirming its suitability for continuous use in challenging conditions.

Revision Part #Also known as
140G-K3F4-D30 Ser A140G-K3F4-D30/A, Series A, Rev A
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