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Allen Bradley 140U MCB 140U-KTD3-D40

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140U-KTD3-D40

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The Allen Bradley 140U-KTD3-D40 is a thermal-magnetic molded case circuit breaker designed to provide reliable overcurrent protection. It operates effectively with a rated voltage of up to 600 VAC and supports a continuous current of 400 Amps.

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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-KTD3-D40

ManufacturerAllen Bradley
Product TypeMolded Case Circuit Breakers
Product Line140U MCB
Part Number140U-KTD3-D40
UPC611320843873
Weight1.63 lbs (0.74 kg)
Protection TypeThermal-Magnetic
Thermal TripFixed
Magnetic TripAdjustable
Number of Poles3 Poles
Frame SizeK Frame
Rated Voltage600 VAC
Rated Current400 A
Interrupt Rating at 480 VAC35 kA
Minimum Frequency50 Hz
Maximum Frequency60 Hz
Installation Altitude1000 m
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The 140U-KTD3-D40 model is a molded case circuit breaker produced by Allen Bradley, part of their 140U MCB series. This circuit breaker integrates thermal and magnetic trip functionalities for effective protection against overcurrent situations. Rated for a maximum voltage of 600 VAC, it ensures safe operation in various electrical environments.

The current carrying capacity of the 140U-KTD3-D40 is set at 400 A, making it suitable for handling substantial electrical loads. This unit features three poles, allowing for flexible applications in three-phase systems. The circuit breaker is built on a K Frame, designed to facilitate installation and maintenance.

For precise performance, it incorporates a fixed thermal trip and an adjustable magnetic trip, which enables customized response to short-circuit conditions. This configuration helps to prevent equipment damage and enhances system safety. With an interrupt rating of 35 kA at an operating voltage of 480 VAC, the 140U-KTD3-D40 can effectively manage fault conditions.

The device can function within a frequency range from 50 Hz to 60 Hz, making it adaptable for diverse electrical systems. Additionally, it is rated for installation at altitudes not exceeding 1000 meters. Overall, the Allen Bradley 140U-KTD3-D40 circuit breaker is designed for reliability and safety in demanding environments.