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Allen Bradley 140U MCB 140U-Q6D3-D50

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140U-Q6D3-D50

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The 140U-Q6D3-D50 model from Allen Bradley represents a robust molded case circuit breaker designed to handle demanding electrical applications. Rated for a continuous operational current of 500 A, it provides dependable thermal magnetic protection with an adjustable magnetic trip feature.

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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-Q6D3-D50

ManufacturerAllen Bradley
Product TypeMolded Case Circuit Breaker
Product Line140U MCB
Part Number140U-Q6D3-D50
Weight32.00 lbs (14.51 kg)
UPC662073031734
Number of Poles3 Poles
Rated Operational Current500 A
Continuous Current Rating500 A Continuous
Thermal Trip Setting500 A Fixed
Trip Unit TypeThermal Magnetic Trip
Magnetic ProtectionAdjustable Magnetic Trip
Rated Operational VoltageUp to 690 V AC
Interrupt Rating at 400 V AC70 kA
Interrupt Rating at 480 V AC65 kA
Mounting TypePanel Mount
Internal Accessory SupportShunt Trip or Undervoltage Release
Service Breaking Capacity 220 V AC100 kA
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The 140U-Q6D3-D50 is part of Allen Bradley's 140U MCB series and functions as a molded case circuit breaker. This unit is suited for high-capacity electrical demands, boasting a rated operational current capability of 500 A. It employs thermal magnetic trip technology, equipping it with reliable trip settings suitable for various environments.

The device features adjustable magnetic protection, allowing for customized settings to match specific application requirements. It can handle operational voltages of up to 690 V AC, making it flexible for different installations. Under fault conditions, this circuit breaker has substantial interrupt capabilities. At 400 V AC, it offers an interrupt rating of 70 kA, while for 480 V AC, the rating is 65 kA, making it adept at safeguarding circuits during overloads or short circuits.

Mounting is straightforward as it is designed for panel applications. Internal accessories can enhance its functionality, allowing for either a shunt trip or undervoltage release, further improving protection measures. The unit's service breaking capacity at 220 V AC is rated at 100 kA, ensuring it meets demanding performance standards in protective circuit applications.