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Allen Bradley 140U MCB 140UE-L3X3

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140UE-L3X3

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The 140UE-L3X3 is a reliable molded case circuit breaker from the Allen Bradley 140U MCB series. Capable of handling up to 630 A of continuous current, this device operates effectively at rated voltages of 415V and 690V AC.

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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 140UE-L3X3

ManufacturerAllen Bradley
Product TypeMolded Case Circuit Breaker
Product Line140U MCB
Part Number140UE-L3X3
UPC781180709906
Weight8.88 lbs (4.03 kg)
Frame SizeL Frame
Number of Poles3 Poles
Continuous Current630 A
Rated Voltage415V AC / 690V AC
Breaking Capacity35 kA at 415 V AC
Minimum Frequency50 Hz
Maximum Frequency60 Hz
IP RatingIP20
Enclosure TypeOpen Type
Minimum Operating Temperature0°C
Maximum Operating Temperature40°C
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The Allen Bradley part number 140UE-L3X3 is classified as a molded case circuit breaker, specifically designed to offer reliable protection for electrical circuits. This breaker is constructed within the L frame size category, making it suitable for applications that require significant current handling. It has a continuous current rating of 630 Amperes, allowing it to manage high loads efficiently.

This circuit breaker is rated for voltages of either 415V AC or 690V AC, accommodating various installation needs. In terms of safety and reliability, the 140UE-L3X3 exhibits a breaking capacity of 35 kilowatts (kA) at 415V AC. This feature is critical in protecting circuits from overloads and short circuits. The breaker is designed to operate effectively across a frequency range, with a minimum frequency set at 50 Hz and a maximum at 60 Hz, allowing it to function properly within different power systems.

The 140UE-L3X3 breaks new ground with its IP20 protection rating, ensuring adequate safety in non-hazardous, indoor environments. The open-type enclosure provides sufficient ventilation, which is essential for thermal management. Additionally, the unit is rated to operate within a temperature range of 0°C to 40°C. It is important that these environmental conditions are maintained to ensure the circuit breaker performs reliably under normal operating circumstances.