KSD9700 115°C Normally Closed Thermal Protector Switch
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Prices updated: 12 Oct 2026
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About this product
KSD9700 is a bimetal thermal protector with a normally closed contact. The contact opens when the temperature reaches 115°C and closes again after the part cools to its reset range. It is wired in series with a heater, motor or appliance winding to cut power during overheating.
Specifications
- Action temperature
- 115 °C
- Contact type
- Normally Closed (NC)
- Rated voltage
- 250 V
- Rated current
- DC 12 V / 12 A, DC 24 V / 10 A, AC 125 V / 8 A, AC 250 V / 5 A
- Overload current
- 5 A
- Reset temperature range
- 10 °C to 140 °C
- Operating temperature range
- 20 °C to 180 °C
- Life
- More than 10,000 cycles
Frequently asked questions
How do I wire the KSD9700?
Wire it in series with the load so the current passes through the normally closed contact. When the temperature reaches 115°C the contact opens and cuts the load, and it closes again once the part cools to its reset range.
Can it switch mains voltage?
The listed ratings are AC 250 V / 5 A and AC 125 V / 8 A, so keep the load current within these limits. Use proper insulation and an enclosure when wiring to mains power.
