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140U-H6S3-D12

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The 140U-H6S3-D12 isolator is a molded case isolator that has been designed to provide current protection to the motors and conduits, including different groups of equipment. It has been introduced by Allen-Bradley in the 140U product line of circuit protection equipment.

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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 our products come with DO Supply's 2-year warranty.

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Technical specifications for 140U-H6S3-D12

Brand	Allen-Bradley / Rockwell Automation
Series	140U MCB
Part Number	140U-H6S3-D12
Type	Molded-case circuit breaker
Detection mechanism	Fixed thermal/Fixed Magnetic
Frame	H
Interrupting Capacity	60-69 kA
Frequency	60 Hertz
Voltage	380-690 Volts
Poles	3
Operating temperature	40 degrees Celsius (75 degrees Celsius if derated)
Rating capacity	High
Rating	125 Amps

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.

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The 140U-H6S3-D12 isolator is a molded case isolator that has been designed to provide current protection to motors and conduits, including different groups of industrial equipment. It has been introduced by Allen-Bradley in the 140U product line of circuit protection equipment. This specific isolator model is a molded case switch that works as an isolator devices. The Allen-Bradley 140U-H6S3-D12 molded case isolator (also known as a disconnector), is commonly used to isolate transformers from service during the maintenance operations or whenever isolation is required. It is often used in applications in substations. Even though isolator devices are designed to stop the current offload conditions, they can also operate on different load conditions.

The Allen-Bradley 140U-H6S3-D12 molded case isolator has a current rating of 125 Amps and it belongs to the Frame H product line. It also has an interrupting capacity of 60 to 69 kA. These specifications need to match the equipment specifications so that the isolator can operate safely. Unlike other circuit isolators, the Allen-Bradley 140U-H6S3-D12 molded case isolator is operated manually. This isolator is an electronic device and it can cut off the operations of just a portion of a substation system instead of the whole system when a fault occurs. This isolator can operate at 40 degrees Celsius maximum without any kind of derating. It can also be used at a temperature of up to 70 degrees Celsius when it is derated accordingly. It is important to note that any kind of wiring that is used with protective equipment needs to be appropriate for operations at temperatures of up to 75 degrees Celsius so that they will be resistant to the heat that is produced by current flow.