
KSD9700 Thermal Switch NC 150°C Thermostat 5A 250V
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Prices updated: 13 Oct 2026
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About this product
A KSD9700 normally closed thermal protector switch that opens its contacts when the temperature reaches 150 °C. With a 5 A overload rating at 250 V, it is used to cut power to heaters, motors and appliances when they overheat. Its small metal-case body is easy to mount on the monitored surface.
Specifications
- Action temperature
- 150 °C
- Switch type
- Normally closed
- Rated voltage
- 250 V
- Overload current
- 5 A
- Rated current
- DC 12 V / 12 A, DC 24 V / 10 A, AC 125 V / 8 A, AC 250 V / 5 A
- Life
- More than 10,000 cycles
- Body size
- 20 x 7.4 x 3.8 mm (metal case)
Frequently asked questions
How should I wire it?
Wire it in series with the load or heater supply so the circuit opens when the switch trips. Keep the load within the rated current table for the voltage you use.
Can I use it on mains voltage?
Only within its ratings: AC 250 V at 5 A or AC 125 V at 8 A. Enclose the connections properly and follow local electrical safety rules.




