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Allen Bradley 140U MCB 140U-L3X3

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140U-L3X3

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The 140U-L3X3 from Allen Bradley is a circuit breaker designed for robust performance within electrical systems. It accommodates a maximum current rating of 600 A, with a specific L frame size and three-pole configuration, making it suitable for various applications.

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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-L3X3

ManufacturerAllen Bradley
Product TypeCircuit Breaker
Product Line140U MCB
Part Number140U-L3X3
Weight11.00 lbs (4.99 kg)
UPC781180484582
Maximum Current Rating600 A
Frame SizeL Frame
Poles Type3 Poles
Thermal Magnetic Current15 to 800 A
Electronic Current Range70 to 1200 A
Breaking Capacity at 220-240 V85 kA
Breaking Capacity at 380-415 V45 kA
Breaking Capacity at 500 V30 kA
Switch Current Range125 to 1200 A
Interrupt Rating at 380-415 V45/70 kA
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The 140U-L3X3, manufactured by Allen Bradley, is a high-functioning circuit breaker optimized for effective operation in industrial environments. This component features a rated maximum current of 600 Amperes and is made with an L frame design along with a three-pole setup, enhancing its versatility in various configurations.

It effectively operates within a thermal magnetic current spectrum, ranging from 15 Amps to 800 Amps, while also presenting an electronic current capability that spans from 70 Amps to 1200 Amps. Such extensive range ensures compatibility with diverse load requirements. The breaker boasts impressive breaking capacities, achieving 85 kA at operational voltages of 220-240 V, 45 kA at 380-415 V, and a still robust 30 kA at 500 V, showcasing its capacity to manage short circuit conditions.

Moreover, the switch current range encompasses values from 125 A up to 1200 A, accommodating varying electrical needs within your setup. The device also features an interrupt rating of either 45 kA or 70 kA at a voltage range of 380-415 V, ensuring reliable performance under fault conditions. With these specifications, the 140U-L3X3 is engineered for demanding applications that require dependable current management and protection.