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).
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