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Allen Bradley 140U MCB 140U-LTD3-D30

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140U-LTD3-D30

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The 140U-LTD3-D30 model from Allen Bradley is a molded case circuit breaker engineered for robust protection in electrical systems. With a frame rating of 600 A, it features both fixed thermal and adjustable magnetic trip mechanisms, providing reliable circuit protection across various conditions.

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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-D30

ManufacturerAllen Bradley
Product TypeMolded Case Circuit Breaker
Product Line140U MCB
Part Number140U-LTD3-D30
Weight1.94 lbs (0.88 kg)
GTIN10781180484671
Frame Rating600 A
Protection TypeFixed Thermal/Adjust Magnetic
Pole Type3 Poles
Thermal Trip Rating300 A
Magnetic Trip Rating1500 to 3000 A
Min. Operating Temperature-25°C
Max. Operating Temperature60°C
Min. Storage Temperature-40°C
Max. Storage Temperature80°C
Installation Altitude1000 m
Relative Humidity5 to 95% (non-condensing)
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The 140U-LTD3-D30 from the Allen Bradley 140U MCB series is a reliable molded case circuit breaker designed for effective electrical distribution systems. With a formidable frame rating of 600 A, this circuit breaker serves as a critical component to prevent overcurrent situations. The protective features include fixed thermal and adjustable magnetic trip types, enhancing its capability to respond to different types of faults.

This circuit breaker comprises three poles, making it suitable for three-phase applications. The thermal trip rating is specifically rated at 300 A, ensuring it will trip under prolonged overcurrent conditions. On the other hand, the magnetic trip rating is adjustable between 1500 A and 3000 A, allowing users to tailor the response to their specific operational requirements.

When considering environmental factors, the 140U-LTD3-D30 operates effectively within a temperature range of -25°C to 60°C. Its storage temperature tolerance extends from -40°C to 80°C. This product can be mounted at installation altitudes reaching 1000 meters, ensuring adaptability in various settings. Additionally, it maintains functionality within a relative humidity of 5% to 95%, without condensation concerns, making it suitable for numerous application environments.