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Allen Bradley 140U MCB 140U-LTD3-D50

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140U-LTD3-D50

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The 140U-LTD3-D50 is a molded case circuit breaker from Allen Bradley's 140U MCB series. It features a frame rating of 600 A and is equipped with a protection mechanism that includes fixed thermal and adjustable magnetic trip options.

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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-LTD3-D50

ManufacturerAllen Bradley
Product TypeMolded Case Circuit Breaker
Product Line140U MCB
Part Number140U-LTD3-D50
Weight10.00 lbs (4.54 kg)
Frame Rating600 A
Protection TypeFixed Thermal/Adjust Magnetic
Pole Type3 Poles
Rated Current500 A
Magnetic Trip Current2500 to 5000 A
Minimum Operating Temperature-25°C
Maximum Operating Temperature60°C
Minimum Storage Temperature-40°C
Maximum Storage Temperature80°C
Minimum Relative Humidity5% (non-condensing)
Maximum Relative Humidity95% (non-condensing)
Installation Altitude1000 m
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The Allen Bradley part number 140U-LTD3-D50 is categorized as a molded case circuit breaker, offering reliable electrical protection. This unit has a substantial frame rating of 600 A, suitable for considerable electrical loads. Its protection system combines fixed thermal and adjustable magnetic trip mechanisms, ensuring prompt disconnection when required.

With a rated current of 500 A, this circuit breaker is built to manage a solid operational workload effectively. It features three poles, allowing it to handle three-phase applications. The magnetic trip current is adjustable, covering a range from 2500 A to 5000 A, enhancing its versatility in various settings.

In terms of temperature performance, the device is rated for operation within -25°C to 60°C. This wide range allows it to function effectively in diverse environments. Furthermore, it withstands conditions with a storage temperature range of -40°C to 80°C, ensuring safety during prolonged periods without use.

This circuit breaker is also designed to operate under specific humidity conditions, maintaining functionality in humidity levels from 5% to 95% (non-condensing). Installation can be performed at altitudes up to 1000 meters, making it suitable for various industrial and commercial applications.