We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Five small rectangular thermostat switches with 6.3mm pins

Unique-Bargains

Unique-Bargains KSD301 Electrical Timer Switch 250°C 10A NC 6.3mm Pin 5pcs

SKU CH-ZXNP-7HRMV MPN KSD301

Five normally-closed thermal switches open at 250 °C, rated 10 A at 250 V with 6.3 mm pins and 50 000-cycle life

  • Opens at 250 °C to protect appliances
  • Normally closed contact resets automatically after cooling
  • Rated 10 A at 250 V for high-load circuits
  • 3 mm quick-connect pins simplify installation
  • Tested beyond 50 000 cycles with no arc

Five-Pack Thermal Switches

This set supplies five KSD301 temperature control switches rated for 250°C and 10A at 250V. Each unit uses a normally closed contact that opens automatically when the sensing temperature is reached. They suit repair technicians and appliance owners who need direct replacements for over-temperature protection.

Snap-In 6.3mm Pin Mounting

The 6.3mm wide pins push into standard quick-connect terminals without soldering, speeding up installation in heating elements, water dispensers, coffee machines and similar appliances. A rated contact life exceeding 50,000 cycles and 2000V AC electrical strength indicate durable construction that resists arc formation during repeated operation.

Replaces Failed Over-Temperature Cut-Outs

These switches restore safety shutdown function in devices where the original thermal protector has tripped permanently or drifted out of calibration. The automatic reset behaviour means the circuit re-closes once temperature falls, so they are not suited for applications requiring a manual reset or a lower trip temperature.

Highlights

  • Opens at 250 °C to protect appliances
  • Normally closed contact resets automatically after cooling
  • Rated 10 A at 250 V for high-load circuits
  • 3 mm quick-connect pins simplify installation
  • Tested beyond 50 000 cycles with no arc

Specifications

BrandUnique Bargains

Questions about this item

What does the 250 °C rating mean for the KSD301 switch?

The switch stays closed until the sensed temperature reaches 250 °C, then it opens the circuit to provide over-temperature protection.

What mounting dimensions does the 6.3 mm pin spacing require?

The terminals use a 6.3 mm (0.25 inch) pin width, so the mating connector or PCB footprint must match that spacing.

How is the KSD301 installed and what step is often missed?

Mount the switch so its sensing face contacts the heat source, wire the NC contacts in series with the load, and verify the circuit opens at 250 °C — skipping the temperature verification is the common error.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.