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Four small square thermal switches with two terminals each

Unique-Bargains

Unique-Bargains KSD301 40C 104F NO Thermal Switch 4PCS

SKU CH-M1SK-3WDRP

Four normally-open thermal switches rated 40 °C / 104 °F, 10 A at 250 V AC for appliance over-temperature protection

  • Key features40 Celsius Degree;Temperature Controller Switch;Normal Open;
  • Opens at 40°C to protect appliances from overheating
  • Rated AC 250V 10A for mains-powered devices
  • 50 MΩ circuit resistance ensures reliable switching
  • Withstands 1500V AC for one minute insulation test
  • Pack of four switches for multiple installations

Four-piece thermal switch pack

This pack contains four KSD301 thermal switches rated to operate at 40 Celsius degree or 104 Fahrenheit. Each unit is a normally open thermostat designed for temperature control or protection in household electric appliances.

Two-terminal heating control

The switches feature two terminals and close the circuit only when the mounting surface reaches the actuation temperature. They are suited for heating units in water dispensers, coffee makers, rice cookers, sterilisers, microwave ovens, air conditioners and similar appliances.

Rated for sustained mains voltage

Each switch handles AC 250V at 10A with a circuit resistance of 50 Mohm and insulation resistance of 100 Mohm. The contacts withstand AC 1500V for one minute, supporting reliable operation under continuous load.

How it compares

Measured against everything we stock in Soldering Irons & Stations, at today’s prices. Recalculated every night.

Price $4.99
Cheaper than about 97% of the 802 comparable items (median $25.99).

Specifications

Product
Brand nameUnique Bargains

Questions about this item

At what temperature does the KSD301 thermal switch close its contacts?

The switch closes when the mounting surface reaches 40 Celsius or 104 Fahrenheit.

How much power does the switch dissipate during continuous operation?

Rated for AC 250V 10A, the contacts add only 50 milliohms of circuit resistance, so self-heating is negligible.

What mounting hardware or wiring is required to install these switches?

Each unit has two terminals for soldering or crimp connectors; no extra brackets are included.

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