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Allen Bradley 140U MCB 140U-KTD3-D30

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140U-KTD3-D30

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The Allen Bradley 140U-KTD3-D30 is a molded case circuit breaker designed to deliver reliable protection. This model features a K-frame design with three poles and a current rating of 400 amperes.

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Not an Authorized Distributor: DO Supply is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All of our products come with DO Supply's 2-year warranty.
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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-D30

ManufacturerAllen Bradley
Product TypeMolded Case Circuit Breaker
Product Line140U MCB
Part Number140U-KTD3-D30
Weight1.69 lbs (0.77 kg)
UPC611320843859
Frame TypeK-frame
Number of Poles3 poles
Interrupt Rating35 kiloamperes at 480 Volts AC, 65 kiloamperes at 480 Volts AC, 65 kiloamperes at 380 to 415 Volts AC, and 13 kiloamperes at 690 Volts AC
Trip Unit TypeFixed thermal/adjustable magnetic trip unit
Current Rating400 Amperes
Trip FunctionsLong-time and instantaneous
Magnetic Trip Adjustment Range1,500 to 3,000 Amperes
Operating Frequency50 to 60 Hertz
Mounting StyleDIN rail mount
Thermal Trip Adjustment Rating300 Amperes
Mechanical Life SpanApproximately 100,000 operations
Compliance StandardsKEMA-KEUR, CSA, and UL-certified
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The 140U-KTD3-D30 by Allen Bradley is a robust molded case circuit breaker crafted for exceptional performance in electric systems. This specific unit is structured with a K-frame and comprises three pole configurations, accommodating a current capacity of up to 400 Amperes. Its interrupt ratings are versatile, supporting 35 kA at 480 Volts AC and 65 kA for both 480 and 380 to 415 Volts AC. It can also handle 13 kA at 690 Volts AC, making it suitable for high fault current applications.

Equipped with both fixed thermal and adjustable magnetic trip units, this circuit breaker provides flexibility in protection. The magnetic trip adjustment allows user customization from 1,500 to 3,000 Amperes, catering to different load demands. Additionally, the device operates effectively within a frequency range of 50 to 60 Hertz.

The mounting style is compatible with DIN rail systems, facilitating ease of installation. Its thermal trip adjustment is rated at 300 Amperes, further enhancing its adaptability in various applications. This circuit breaker boasts a mechanical lifespan of approximately 100,000 operations, ensuring long-term reliability. Meeting KEMA-KEUR, CSA, and UL certification standards underscores its compliance and safety features.