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The 140U-MTD3-D60 part by Allen Bradley functions as a thermal-magnetic trip unit designed for use with molded case circuit breakers, particularly compatible with M frame sizes. This unit also serves as a spare and can be adjusted for magnetic trip ratings between 3000 and 6000 Amps, with a thermal trip rating of 600 Amps.
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| Manufacturer | Allen Bradley |
|---|---|
| Product Type | Trip Unit |
| Product Line | 140U MCB |
| Part Number | 140U-MTD3-D60 |
| Weight | 12.00 lbs (5.44 kg) |
| Spare Part/Accessory | Yes |
| Compatible Circuit Breaker Type | Molded Case Circuit Breakers |
| Trip Type | Thermal-Magnetic |
| Circuit Breaker Frame Size | M Frame |
| Magnetic Trip Rating | 3000-6000 Amps (Adjustable) |
| Thermal Trip Rating | 600 Amps |
| Operating Temperature | -8.9 to 60 degrees Celsius |
| Storage Temperature | -8.9 to 60 degrees Celsius |
| Maximum Operating Humidity | 80% RH, non-condensing |
| Maximum Storage Humidity | 80% RH, non-condensing |
| Maximum Operating Altitude | 1000m without derating |
| Maximum Storage Altitude | 1000m without derating |
The Allen Bradley 140U-MTD3-D60 is a trip unit designed primarily for molded case circuit breakers. This unit qualifies as an accessory and features a thermal-magnetic trip mechanism. Its adaptability allows it to suit the M frame circuit breaker size, making it a versatile choice for various applications. For those seeking customization, the magnetic trip rating is adjustable from 3000 to 6000 Amps, providing flexibility to meet specific operational needs. The thermal trip is fixed at 600 Amps, ensuring reliable protection against overloads.
Operating under diverse environmental conditions, the 140U-MTD3-D60 can function within a temperature range of -8.9 to 60 degrees Celsius, which is consistent for both operation and storage. Humidity tolerance is maintained at a maximum of 80% relative humidity for non-condensing conditions, suitable for various installation settings. This trip unit's performance is further enhanced by its capability to operate at altitudes up to 1000 meters without derating, ensuring sustained reliability in high-altitude applications as well. Overall, the 140U-MTD3-D60 is engineered to provide dependable circuit protection and adaptability in demanding environments.