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Allen Bradley Bulletin 817 817-AD

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817-AD

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The 817-AD thermistor overload relay by Allen Bradley is a reliable component for electrical systems. Operating at a control supply voltage of 110 volts AC, it is equipped with various protective features for enhanced safety.

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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-AD

ManufacturerAllen Bradley
Product TypeThermistor Overload Relay
Product LineBulletin 817
Part Number817-AD
GTIN10611320956410
Control Supply Voltage110 Volts AC
Electrical Connection TypeScrew connections
Status IndicatorOne red LED indicator
Power Consumption2.5 volt-amperes
Continuous Thermal Current4 Amperes
Reset MethodAutomatic reset
Operating Frequency50 to 60 Hertz
Protection FeaturesShort-circuit and open-circuit protection, and overtemperature protection
Vibration ResistanceUp to 3G
Surge Voltage5 kilovolts
Interference Voltage2.5 kilovolts
Rated Operational Current3 Amperes
Maximum Permanent Switching Current30 Amperes

The Allen Bradley 817-AD is a thermistor overload relay sought after for its strong performance in managing electrical currents. It accepts a control supply voltage of 110 volts AC and operates efficiently within the 50 to 60 Hertz frequency range. This relay is designed to provide various safety features, including protection against short circuits and overtemperature scenarios, ensuring reliable operation in demanding environments.

With a continuous thermal current capability of 4 amperes, this model effectively safeguards against overload conditions. The rated operational current is positioned at 3 amperes, while it supports a maximum permanent switching current of 30 amperes, which enhances its versatility in different applications. Users will appreciate the screw connections for easy electrical integration. The 817-AD is also fitted with a red LED status indicator, allowing for monitoring of operational states. Power consumption is noted at 2.5 volt-amperes, making it energy-efficient. Its robust construction allows it to withstand vibration levels up to 3G, making it suitable for industrial applications. Additionally, it features automatic reset functionality, which aids in reducing downtime after fault conditions. Protection against surge voltages reaching up to 5 kilovolts and interference voltages of 2.5 kilovolts further enhances the reliability of the device.