KSD301 Normally Open (NO) Thermal Switch

KSD301 Thermal Switch 250V 10A The KSD301 Thermal Switch is a compact, single-pole/ single-throw bimetal snap‑action thermostat with normally closed contacts at room temperature. It opens automatically when reaching the preset trip temperature (40 °C, 60 °C, 90 °C, 100 °C, or 120 °C), and re-closes once cooled below the reset threshold. With its reliable auto-reset behavior and high-current rating, it’s suitable for over-temperature protection in a wide range of appliances and electronics. Features Bimetal Snap‑Action SPST, auto‑reset, normally closed until triggered. Preset operating temperatures: 40 °C, 60 °C, 90 °C, 100 °C, 120 °C. Rated for up to 250 VAC and 10 A resistive load. Low contact resistance (typically ≤ 50 mΩ). High insulation strength: withstands AC 1500 V for one minute; insulation ≥ 100 MΩ at DC 500 V. Durable auto-reset design, rated for ≥100,000 cycles. Specifications Parameter Value Model KSD301 Contact Configuration SPST – Normally Closed (auto-reset) Trip Temperatures 40 °C, 60 °C, 90 °C, 100 °C, 120 °C ±5 °C Reset Temperature Approx. 10–30 °C below trip temperature Rated Voltage & Current 250 VAC, 10 A (resistive) Dielectric Strength 1500 VAC for 1 minute Insulation Resistance ≥ 100 MΩ @ DC 500 V Contact Resistance ≤ 50 mΩ Operating Cycles ≥ 100,000 Terminal Type 6.3 mm Quick‑connect tabs (flat blades) Case Material Plastic or ceramic housing with metal cap Mounting Dimension 25mm (pitch) Applications Over‑temperature protection in heating elements such as irons, kettles, coffee makers. Motor winding, transformer, and power supply thermal safeguarding. Temperature safety cutoff in battery packs, control panels, and automotive devices. General DIY and industrial electronics requiring thermal limit control. Package Contents 1x KSD301 Thermal Switch 250V 10A (of specified temperature).

250Vac 10A