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Five small rectangular thermostats with two terminals each, silver metal body, black plastic base

Unique-Bargains

Unique-Bargains KSD301 Thermostat 105C NC 5pcs

SKU CH-DJB9-DZQQ3

Five normally-closed KSD301 thermostats open at 105 °C and handle 250 V 10 A for appliance over-temperature protection

  • Product typeHI - Soldering
  • Automatic reset protects appliances at 105°C
  • Normally closed contacts open at set temperature
  • Rated 250V 10A for household equipment
  • Compact 3.4 × 1.2 cm fits tight spaces
  • Pack of five covers multiple repair jobs

KSD301 105°C Thermostat Pack

The Unique-Bargains KSD301 is a normally closed bimetal thermostat rated to open at 105 degrees Celsius. Each unit handles 250 volts at 10 amps for over-temperature protection in household appliances. The five-piece set supplies spares for repair technicians or multi-point installations.

Suited for appliance over-temperature cuts

Repairers fitting safety cut-outs to irons, coffee makers, water heaters or similar mains-powered heating devices will find the 105°C trip point and automatic reset useful. Buyers who need a lower or higher opening temperature, a normally open contact, or a different current rating should look at something else.

Sustained load at rated current

At the full 10 amp rating the contacts carry current continuously until the sensing disc reaches 105°C, then open to interrupt the circuit. Circuit resistance is specified at 50 megohms and insulation resistance at 100 megohms. The switch resets automatically once the appliance cools below the trip point.

How it compares

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

Price $5.99
Cheaper than about 95% of the 802 comparable items (median $25.99).

Specifications

Product
Brand nameUnique Bargains
Product typeHI - Soldering

Questions about this item

What voltage and current rating must my circuit stay within for the 250V 10A switch to operate safely?

Keep the load at or below 250 volts and 10 amps; exceeding either can damage the contacts.

Will the 2.4 cm mounting hole spacing match the bracket on my older appliance?

Measure the existing bracket — if the holes are 2.4 cm apart centre-to-centre, the thermostat will bolt straight on.

How can I confirm the switch opens at 105 °C after I install it?

Heat the sensing face until it hits 105 °C and verify continuity drops to open circuit with a multimeter.

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