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Allen Bradley 140U MCB 140U-L6X3

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140U-L6X3

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The Allen Bradley 140U-L6X3 is a robust molded case circuit breaker frame designed for high current applications. Operating at 480 Volts AC, this unit can handle a current range of 300 to 600 amperes and includes a thermal magnetic trip unit for reliable interruption.

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2 Year DO Supply Warranty
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-L6X3

ManufacturerAllen Bradley
Product TypeMolded Case Circuit Breaker Frame
Product Line140U MCB
Part Number140U-L6X3
Weight32.00 lbs (14.51 kg)
GTIN10781180484596
Number of Poles3 poles
Voltage Class480 Volts AC
Current Range300 to 600 Amperes
Interrupting Rating65 kiloamperes
Operating Frequency50 to 60 Hertz
Trip Unit TypeThermal magnetic trip unit
Frame SizeFrame size L
Maximum Amperage600 Amperes
CertificationsIEC, KEMA-KEUR, UL, CSA, and CE-certified
Ambient Operating Temperature0°C to 40°C (32°F to104°F)
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The 140U-L6X3 from Allen Bradley is a molded case circuit breaker designed to protect circuits in demanding environments. Rated for an AC voltage class of 480 Volts, this breaker operates in a current range between 300 and 600 Amperes, making it ideal for high-load situations. The device consists of three poles, enhancing its application versatility.

With a notable interrupting rating of 65 kiloamperes, this unit ensures effective protection against overloads and short circuits. Its thermal magnetic trip unit allows for reliable operation by detecting both thermal and magnetic overload conditions. This model complies with operating frequencies from 50 to 60 Hertz, catering to various industrial applications.

The frame size is classified as L, and it can comfortably handle a maximum amperage of 600 Amperes. Additionally, the 140U-L6X3 has been rigorously certified, meeting standards set by IEC, KEMA-KEUR, UL, CSA, and CE, thus ensuring it adheres to global safety requirements. The circuit breaker can function effectively in ambient temperatures ranging from 0°C to 40°C (32°F to 104°F), indicating its suitability for a wide variety of operating environments.