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Allen Bradley 140U MCB 140U-Q3X3

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140U-Q3X3

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The 140U-Q3X3 is a molded case circuit breaker from Allen Bradley, designed to provide reliable protection in electrical systems. Rated for a current of 600 A, it is suitable for 3-pole configurations and can operate within specified voltage limits up to 600 VAC.

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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-Q3X3

ManufacturerAllen Bradley
Product TypeMolded Case Circuit Breaker
Product Line140U MCB
Part Number140U-Q3X3
UPC611320844405
Weight18.00 lbs (8.16 kg)
Frame SizeQ Frame
Number of Poles3 Poles
Current Rating600 A
Rated Insulation Voltage (UL/CSA)750 VAC
Rated Insulation Voltage (IEC)1000 V AC
Rated Operating Voltage600 VAC
Interrupting Rating at 480 VAC35 kA
Minimum Frequency50 Hz
Maximum Frequency60 Hz
Mounting TypePanel Mount
Installation Altitude1000 m
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The Allen Bradley 140U-Q3X3 represents a molded case circuit breaker, particularly suitable for systems requiring effective current management and protection. Specifically, it operates under a current rating of 600 Amperes, making it a strong candidate for heavy-duty applications. The device is structured with a Q Frame size, which is designed to accommodate 3 poles, thus offering versatility in different electrical configurations.

In terms of voltage handling, the 140U-Q3X3 is classified with a rated insulation voltage of 750 VAC as per UL/CSA standards and extends to 1000 V AC under IEC standards. Its rated operating voltage is capped at 600 VAC, ensuring it operates within safe limits. This breaker boasts an interrupting rating of 35 kA at 480 VAC, providing strong protection against overcurrent situations, thereby enhancing safety for electrical installations.

The unit is compatible with an operational frequency range starting from 50 Hz to 60 Hz, making it suitable for various regional standards. Designed for straightforward panel mounting, installation is feasible within environments up to 1000 meters in altitude. The 140U-Q3X3 is an efficient choice for those seeking reliability in circuit protection with its strong rated features.