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Allen Bradley 140G MCB 140G-H3F4-D12

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140G-H3F4-D12

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The 140G-H3F4-D12 is a molded case circuit breaker engineered for effective circuit protection. This unit has an H frame design and a current rating of 125 Amps. It includes four poles and offers an interrupting rating of 35 kA, making it suitable for 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-H3F4-D12

ManufacturerAllen Bradley
Product TypeMolded Case Circuit Breaker
Product Line140G MCB
Part Number140G-H3F4-D12
Weight3.00 lbs (1.36 kg)
FrameH
Amps125
Interrupting Rating35 kA
Protection TypeAdjust Thermal/ Adjust Magnetic
Poles4
Current Range120 A
Rated Insulation Voltage1000 V
Rated Impulse Withstand Voltage8 kV
Mechanical Life240 Operations/hr.
Electrical Life120 Operations/hr.
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The Allen-Bradley 140G-H3F4-D12 is designed as a molded case circuit breaker crucial for safeguarding electrical circuits. This unit is rated at 125 Amps, offering robust protection and reliability. The construction includes four poles, enhancing its application versatility in various electrical systems. It features an interrupting capacity of 35 kA, which effectively ensures performance during fault conditions.

The device utilizes an H frame design and provides both adjustable thermal and magnetic protection options, allowing tailored operational settings. The current range supported by this breaker reaches 120 A, with an insulation voltage rating capable of handling up to 1000 V. Furthermore, it can manage impulse withstand voltages rated at 8 kV, ensuring protection against voltage spikes and transients.

With a manageable weight of 3.53 lbs, this circuit breaker also offers impressive operational longevity, supporting a mechanical life of 240 operations per hour, alongside an electrical life of 120 operations per hour. The combination of these specifications makes the 140G-H3F4-D12 an essential component for ensuring safe and effective electrical performance.

Revision Part #Also known as
140G-H3F4-D12 Ser A140G-H3F4-D12/A, Series A, Rev A
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