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Allen Bradley 140U MCB 140U-MTD3-D45

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140U-MTD3-D45

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The 140U-MTD3-D45 is a molded case circuit breaker from Allen Bradley's 140U MCB series. Designed for efficient performance, this unit features a fixed thermal and adjustable magnetic protection mechanism and operates with a frame rating of up to 800 A.

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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-MTD3-D45

ManufacturerAllen Bradley
Product TypeMolded Case Circuit Breakers
Product Line140U MCB
Part Number140U-MTD3-D45
Weight12.00 lbs (5.44 kg)
Frame Rating800 A
Protection TypeFixed Thermal/Adjust Magnetic
Number of Poles3 Poles
Rated Current450 A
Thermal Trip Adjustment Range450 A
Magnetic Trip Adjustment Range2250 to 4500 A
Minimum Operating Temperature-25°C
Maximum Operating Temperature60°C
Minimum Storage Temperature-40°C
Maximum Storage Temperature80°C
Installation Altitude1000 m
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The Allen Bradley 140U-MTD3-D45 is classified as a molded case circuit breaker, specifically designed for robust circuit protection. It supports a frame rating of 800 A and consists of three poles for effective current management. The rated current for this model stands at 450 A, providing significant capacity for various applications.

This breaker features both fixed thermal protection and an adjustable magnetic trip mechanism. Thermal trip settings can be configured at 450 A. The magnetic trip adjustment allows for a flexible range, accommodating settings between 2250 A and 4500 A.

Temperature parameters are critical for optimal performance. This model can operate in a minimum of -25°C and can sustain a maximum of 60°C during operation. For storage, it can endure temperatures from -40°C to 80°C, allowing for flexible handling in different environments. Additionally, installation is feasible at altitudes up to 1000 meters, ensuring adaptability for various industrial settings.