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Allen Bradley 140G MCB 140G-N5I4-E12-Z1

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140G-N5I4-E12-Z1

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The 140G-N5I4-E12-Z1 circuit breaker from Allen-Bradley is designed for robust electrical protection. This molded case circuit breaker operates at a maximum of 1200 Amps and features an interrupting capacity of 50 kA. It employs electronic LSIG protection and supports four poles for efficient performance.

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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-N5I4-E12-Z1

ManufacturerAllen Bradley
Product TypeMolded Case Circuit Breaker
Product Line140G MCB
Part Number140G-N5I4-E12-Z1
Weight32.00 lbs (14.51 kg)
FrameN
Amps1200
Interrupting Rating50 kA
Protection TypeElectronic LSIG
Poles4
Current Range1200 A
Rated Insulation Voltage1000V
Rated Impulse Withstand Voltage8 kV
Mechanical Life60 Operations/hr.
Electrical Life60 Operations/hr.
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The 140G-N5I4-E12-Z1 from Allen-Bradley serves as a high-capacity molded case circuit breaker developed by Rockwell Automation. Capable of handling up to 1200 Amps, this circuit protection device is essential for managing significant electrical loads. It features a robust interrupting rating of 50 kA, which allows it to safely interrupt fault currents effectively.

Designed in an N-frame configuration, this circuit breaker incorporates four poles for versatile applications. The protection mechanism relies on electronic LSIG technology, ensuring reliable operation under varying conditions.

Electrical specifications are notable, with a rated insulation voltage of 1000 volts, making it suitable for high-voltage environments. Additionally, the unit can withstand impulse voltages of up to 8 kV, thus offering strong protection against voltage spikes. With a weight of 27.56 pounds, this durable unit is built to withstand the rigors of industrial use.

Both mechanical and electrical life ratings for the 140G-N5I4-E12-Z1 are set at 60 operations per hour, affirming its reliability and performance over time. This circuit breaker is a critical component for ensuring safe and efficient electrical management in various applications.

Revision Part #Also known as
140G-N5I4-E12-Z1 Ser A140G-N5I4-E12-Z1/A, Series A, Rev A
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