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Allen Bradley 140G MCB 140G-H3H4-D12

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140G-H3H4-D12

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The 140G-H3H4-D12 is a molded case circuit breaker designed by Allen-Bradley, a part of the Rockwell Automation product line. It is rated for a maximum of 125 amps and features an interrupting capacity of 35 kA. This device incorporates electronic LSI protection and operates with a four-pole configuration.

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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-H3H4-D12

ManufacturerAllen Bradley
Product TypeMolded Case Circuit Breaker
Product Line140G MCB
Part Number140G-H3H4-D12
Weight10.00 lbs (4.54 kg)
FrameH
Amps125
Interrupting Rating35 kA
Protection TypeElectronic LSI
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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In the realm of electrical circuit protection, the 140G-H3H4-D12 molded case circuit breaker from Allen-Bradley stands out for its robust design and functionality. This device, manufactured by Rockwell Automation, features an H frame suitable for handling a continuous load of 125 amps. It boasts a significant interrupting rating of 35 kA, allowing it to effectively manage electrical faults.

The circuit breaker operates with four poles and provides electronic LSI protection, which ensures reliable operations against faults. Capable of managing a current range up to 120 A, it is versatile for various industrial applications. Additionally, the rated insulation voltage is a solid 1000 V, complemented by a rated impulse withstand voltage of 8 kV, highlighting its durability against transient voltage spikes.

Weighing in at 3.53 pounds, the 140G-H3H4-D12 is not only effective but also compact, making it easier to install in tight spaces. The unit has been tested for durability, with a mechanical life expectancy of 240 operations per hour and an electrical life of 120 operations per hour. This combination of features makes the 140G-H3H4-D12 an important component in ensuring reliable and safe operation of electrical systems.

Revision Part #Also known as
140G-H3H4-D12 Ser A140G-H3H4-D12/A, Series A, Rev A
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