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Allen Bradley 140G MCB 140G-NS5I3-E12

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140G-NS5I3-E12

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The 140G-NS5I3-E12 is a robust molded case circuit breaker engineered by Allen-Bradley, part of Rockwell Automation. It supports a maximum current rating of 1200 Amps and features a 50 kA interrupting capacity, making it suitable for high-demand 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-NS5I3-E12

ManufacturerAllen Bradley
Product TypeMolded Case Circuit Breaker
Product Line140G MCB
Part Number140G-NS5I3-E12
Weight20.00 lbs (9.07 kg)
FrameNS
Amps1200
Interrupting Rating50 kA
Protection TypeElectronic LSIG
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-NS5I3-E12 molded case circuit breaker represents a high-capacity solution from Allen-Bradley, designed specifically for industrial settings. Operating at a current of 1200 Amps, this unit is built with an interrupting rating of 50 kA, ensuring safety and reliability during fault conditions. The NS frame configuration allows for seamless integration into various electrical systems.

Engineered for resilience, the breaker utilizes electronic LSIG protection, providing enhanced capabilities for overload and short circuit detection. It is rated for up to 1000 volts of insulation, which allows it to operate in high-demand, voltage-intensive applications. Furthermore, the unit can withstand impulse voltages of 8 kV, which adds an extra layer of protection against sudden electrical spikes.

Weighing 27.56 pounds, the 140G-NS5I3-E12 has been designed with operational longevity in mind, showcasing a mechanical life of 60 operations per hour. It shares the same electrical life rating of 60 operations per hour, ensuring durability in continuous use. Overall, this circuit breaker is an essential component for maintaining electrical integrity and performance across various applications.

Revision Part #Also known as
140G-NS5I3-E12 Ser A140G-NS5I3-E12/A, Series A, Rev A
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