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Allen Bradley 140G MCB 140G-R12I4-E20-Z1

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140G-R12I4-E20-Z1

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The 140G-R12I4-E20-Z1 is a heavy-duty molded case circuit breaker from Allen-Bradley. Its design incorporates an R frame and supports a current range between 2500 and 3000 Amps. With an impressive interrupting capacity of 125 kA, it employs electronic LSIG protection, making it effective 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-R12I4-E20-Z1

ManufacturerAllen Bradley
Product TypeMolded Case Circuit Breaker
Product Line140G MCB
Part Number140G-R12I4-E20-Z1
Weight32.00 lbs (14.51 kg)
FrameR
Amps2500-3000
Interrupting Rating125 kA
Protection TypeElectronic LSIG
Poles4
Current Range2000 A
Rated Insulation Voltage1000V
Rated Impulse Withstand Voltage12 kV
Mechanical Life60 Operations/hr.
Electrical Life60 Operations/hr.
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The Allen-Bradley 140G-R12I4-E20-Z1 circuit breaker is engineered to handle substantial electrical loads. This molded case device features an R frame, making it suitable for various high-current applications. The breaker operates effectively within a range of 2500 to 3000 Amps and is designed with a high interrupting rating of 125 kA, ensuring optimal protection against fault conditions.

In addition, it utilizes electronic LSIG protection, which allows for precise monitoring and response to electrical anomalies. This model comprises four poles, accommodating multiple phases in electrical systems.

Furthermore, it supports a rated insulation voltage of 1000 volts and has a rated impulse withstand voltage of 12 kV, enhancing its durability during transient events. Weighing 175 pounds, this circuit breaker is robust enough for rigorous industrial conditions. Its mechanical and electrical life is rated at 60 operations per hour, emphasizing its reliability for continuous service. The 140G-R12I4-E20-Z1 proves to be a significant asset in maintaining safety and efficiency in large-scale electrical installations.

Revision Part #Also known as
140G-R12I4-E20-Z1 Ser A140G-R12I4-E20-Z1/A, Series A, Rev A
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