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Five small rectangular thermostat switches with two flat terminals each, silver metal bodies and black plastic bases

Unique-Bargains

Unique-Bargains KSD301 135°C Thermostat Switch 5 Pack

SKU CH-ARX4-WT8DM

Pack of five normally-closed KSD301 thermostat switches that open at 135°C, rated 250V 10A with 6.35mm terminals for appliance temperature protection

  • Product typeHI - Soldering
  • Automatic reset protects appliances without manual intervention
  • Opens at 135°C to prevent overheating damage
  • Rated 250V 10A for mains-powered equipment
  • 35mm terminals fit standard quick-connect wiring
  • Pack of five supplies spares for multiple repairs

135°C NC Thermostat Switches

This pack contains five KSD301 temperature control switches rated for 135°C operation. Each unit uses a normally closed contact that opens automatically when the mounting surface reaches the trigger temperature. They are suited for protecting household appliances, heating elements and PC thermal circuits from overheating.

Check Voltage Current and Terminal Fit

Verify that the circuit you intend to protect does not exceed 250V and 10A. The terminals measure 6.35mm wide, so confirm your connectors or crimps match this dimension. Ensure the 3.4cm by 1.2cm body can be mounted against the surface you need to monitor.

Snap-In Overheat Protection for Compact Builds

The switch resets itself once the temperature falls below the trip point, so no manual intervention is needed after an event. Its small footprint lets you place it directly on motor windings, heater blocks or PCB hotspots without a separate controller. The 50Mohm circuit resistance and 100Mohm insulation resistance keep leakage minimal in low-current sensing loops.

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
Product typeHI - Soldering

Questions about this item

What comes in the pack and do I need any extra connectors?

The pack contains five KSD301 thermostat switches, each with two 6.35mm wide terminals ready for push-on connectors or soldering. No additional hardware is included.

How do I pick the right temperature rating for my appliance?

Every switch in this pack opens at 135°C and resets automatically when the surface cools, so choose this pack when your design calls for a 135°C cut-off.

Will the 10A 250V rating handle a typical coffee-machine heating element?

Each switch is rated for 10A at 250V with 50 MΩ circuit resistance and 100 MΩ insulation resistance, suitable for many household heating loads.

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