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Allen Bradley Bulletin 817 817-MD

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817-MD

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The 817-MD thermistor control module by Allen Bradley is designed for reliable thermal management in a variety of applications. This module operates on an AC supply voltage ranging from 110 to 440 volts and features a manual or remote reset functionality.

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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 817-MD

ManufacturerAllen Bradley
Product TypeThermistor Control Module
Product LineBulletin 817
Part Number817-MD
Reset TypeManual/remote reset
Supply Voltage110 to 440 V
Voltage TypeAC
Minimum Frequency Rating50 Hz
Maximum Frequency Rating60 Hz
Output Contacts1 N.C, 1 N.O
Rated Insulation Voltage300 V
IP RatingIP20
Storage Humidity80% max. (non-condensing)
Installation Altitude1000 meters above sea level
Operating Humidity80% max. (non-condensing)
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Specifically engineered for thermistor applications, the Allen Bradley 817-MD control module serves as an essential device for monitoring temperatures in industrial settings. It supports an AC supply voltage of 110 to 440 volts, allowing it to fit into various electrical systems. The reset mechanism can be either manual or remote, facilitating easy maintenance in different setups.

This module has output contacts that include one normally closed (N.C.) and one normally open (N.O.), providing versatility for circuit configurations. With a minimum frequency rating of 50 Hz and a maximum of 60 Hz, the device ensures compatibility with standard power systems. Rated for insulation at 300 volts, the 817-MD ensures safety during operation, while its IP20 rating indicates protection from solid bodies larger than 12 mm, but it is not suitable for wet conditions.

For storage conditions, the 817-MD can function effectively in humidity levels up to 80%, provided condensation is not present. It also operates at altitudes of up to 1000 meters above sea level, making it adaptable for various geographical locations and installations. The specifications of this module make it a reliable choice for maintaining operational safety in applications relying on thermistor technology.