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Allen Bradley 140U MCB 140U-Q3D3-D60

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140U-Q3D3-D60

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The 140U-Q3D3-D60 is a molded case circuit breaker offered by Allen Bradley in the 140U MCB series, designed to provide reliable circuit protection. This model features a continuous current rating of 600 A and a frame size classified as Q Frame, making it suitable for a variety of industrial applications.

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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-Q3D3-D60

ManufacturerAllen Bradley
Product TypeMolded Case Circuit Breaker
Product Line140U MCB
Part Number140U-Q3D3-D60
Weight16.94 lbs (7.68 kg)
Frame SizeQ Frame
Number of Poles3 Poles
Continuous Current Rating600 A
Rated Operational Voltage (UL/CSA)600 VAC
Rated Operational Voltage (IEC)690 VAC
Rated Insulation Voltage1000 V AC
Minimum Frequency50 Hz
Maximum Frequency60 Hz
Interrupting Rating at 240 VAC65 kA
Interrupting Rating at 480 VAC35 kA
Interrupting Rating at 600 VAC25 kA
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In the realm of molded case circuit breakers, the 140U-Q3D3-D60 from Allen Bradley stands out for its robust features and operational efficiency. This model is specifically categorized as a molded case circuit breaker, found within the 140U MCB series, making it versatile for various applications. Engineered with a Q Frame size, it incorporates three poles that handle significant electrical loads effectively.

The circuit breaker is rated for continuous currents up to 600 A, allowing it to manage substantial electrical demands. Its operational voltage rating aligns with both UL/CSA standards at 600 VAC and IEC standards at 690 VAC. With a rated insulation voltage set at 1000 V AC, it ensures safe and efficient isolation in electrical systems.

This device operates across a frequency range of 50 Hz to 60 Hz. Importantly, the 140U-Q3D3-D60 has strong interrupting ratings, capable of withstanding fault currents of up to 65 kA at 240 VAC, 35 kA at 480 VAC, and 25 kA at 600 VAC. This high interrupting capability enhances its reliability and safety in protecting circuits from overloads and short circuits, making it an essential component for industrial electrical systems.