Generic KSD9700/BK05-BB1D Metallic Shell Temperature Control Switch - 5A 250V, 60°C Normally Open

This KSD9700 switch has a fixed trip point of 60°C. It is a normally-open (NO) bimetallic switch, meaning the contacts are open at temperatures above 60°C, breaking the circuit. The switch will automatically reset and close the contacts once the temperature cools sufficiently below the trip point, typically requiring a differential of 5-10°C.

The switch is rated for a maximum continuous current of 5 Amperes at up to 250 Volts, either AC or DC. This rating is suitable for protecting many small to medium power loads like motors, heaters, or power supplies. Do not exceed these ratings to ensure safe operation and prevent contact welding or failure.

Install the switch in direct thermal contact with the component or surface you wish to monitor (e.g., motor housing, heatsink). Connect its two lead wires in series with the load or power line you want to control. The metallic shell must be securely mounted for optimal heat transfer. Ensure wiring complies with local electrical codes for the voltage and current used.

Yes, the 250V rating applies to both AC and DC voltage. The 5A current rating is consistent for both AC and DC loads. For DC inductive loads (like motors or solenoids), ensure the switch's breaking capacity is adequate, as arc suppression can be more challenging with DC compared to AC.