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Allen Bradley 140U MCB 140U-N6L3-E12

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140U-N6L3-E12

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The 140U-N6L3-E12, a circuit breaker manufactured by Allen Bradley, is designed for high-capacity applications. With a rated current of 1200 A and a robust N-Frame size, it maintains operational reliability in various environments.

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Not an Authorized Distributor: DO Supply is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All of our products come with DO Supply's 2-year warranty.
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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 140U-N6L3-E12

ManufacturerAllen Bradley
Product TypeCircuit Breaker
Product Line140U MCB
Part Number140U-N6L3-E12
Weight32.00 lbs (14.51 kg)
UPC611320844979
Rated Current1200 A
Frame SizeN-Frame
Interrupting Rating60-69 kA
Protection TypeShort-time Protection
Number of Poles3-poles
Min. Storage Temperature0 °C
Max. Storage Temperature40 °C
Max. Storage Humidity80% (Non-Condensing)
Max. Operating Humidity80% (Non-Condensing)
Max. Altitude1000 MSL without derating
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The Allen Bradley 140U-N6L3-E12 is a reliable circuit breaker with a substantial rated current of 1200 A. Designed in an N-Frame configuration, this device simplifies installation and enhances stability during operations. It supports short-time protection, making it ideal for applications requiring quick fault isolation.

This circuit breaker features 3 poles and is capable of interrupting currents between 60 kA and 69 kA, providing robust protection against overloads. It is suitable for operation in relatively high humidity environments, with a maximum operating humidity threshold of 80% (non-condensing).

In terms of storage, the circuit breaker is for safe use within temperature limits of 0 °C to 40 °C, ensuring preservation of performance and component integrity. Furthermore, it is designed to function effectively at altitudes of up to 1000 meters above sea level without any derating, thus maintaining its reliability in volatile settings.