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Allen Bradley 140G MCB 140G-NS5K3-E12

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140G-NS5K3-E12

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The 140G-NS5K3-E12 from Allen-Bradley is a high-capacity molded case circuit breaker developed by Rockwell Automation. This device is rated for 1200 Amps, offering substantial interrupting capability at 50 kA. It features electronic LSIG protection for enhanced safety during operation.

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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-NS5K3-E12

ManufacturerAllen Bradley
Product TypeMolded Case Circuit Breaker
Product Line140G MCB
Part Number140G-NS5K3-E12
Weight32.00 lbs (14.51 kg)
FrameNS
Amps1200
Interrupting Rating50 kA
Protection TypeElectronic LSIG
Current Range1200 A
Rated Insulation Voltage1000 V
Rated Impulse Withstand Voltage8 kV
Mechanical Life60 Operations/hr.
Electrical Life60 Operations/hr.
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The 140G-NS5K3-E12, a dependable molded case circuit breaker from Allen-Bradley, is designed for demanding industrial applications. At a maximum current of 1200 Amps, this circuit breaker offers reliable protection against faults with its interrupting capacity of 50 kA. Its advanced electronic LSIG protection system ensures that it responds accurately to overloads and short circuits.

Constructed with an NS frame, this unit supports significant electrical loads while providing durability. It is rated for a maximum insulation voltage of 1000 volts, making it suitable for high-voltage environments. Furthermore, the breaker can withstand impulse voltages of up to 8 kV, enhancing its resilience against transient surges.

Weighing approximately 27.56 pounds, this circuit breaker is designed for efficient installation and operation. Its rated mechanical life is 60 operations per hour, indicating its ability to handle repeated cycle demands. In addition, the electrical life rating matches this at 60 operations per hour, ensuring that the device can perform reliably in continuous applications. The 140G-NS5K3-E12 is an essential component for achieving optimal circuit protection in various industrial settings.

Revision Part #Also known as
140G-NS5K3-E12 Ser A140G-NS5K3-E12/A, Series A, Rev A
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