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Ten small round thermostats with 6.3mm terminals in a plastic case

Unique-Bargains

Unique-Bargains KSD301Action Thermostat Kit 10pcs NC 40-100°C 6.3mm

SKU CH-XD8K-64FB8 MPN KSD301Action

Assortment kit of ten normally-closed KSD301 thermal switches covering 40 to 100 °C with 6.3 mm pins

  • Ten temperature choices from 40 to 100 °C cover many heating tasks
  • Normally closed contacts open at the set point for automatic overheat protection
  • Bimetal snap action gives fast response and more than 50,000 switching cycles
  • 3 mm quick-connect pins fit standard spade terminals without soldering
  • Supplied as a 10-piece kit in a hard plastic box with each value separated

Assorted Temperature Kit

This kit supplies ten normally-closed KSD301 thermal switches covering 40°C to 100°C in 5°C steps. Each switch opens when its rated temperature is exceeded and resets automatically when the temperature falls. The assortment fits microwave ovens, coffee makers, water heaters, dryers and similar appliances. All ten pieces arrive organised in a hard plastic storage box.

Maintenance and Repair Use

Technicians and hobbyists who service a range of heating equipment benefit from having every common set-point in one pack. Installers who need only a single fixed temperature or a normally-open contact will not find those variants here. The 6.3 mm pin width suits standard quick-connect terminals; other pin spacings are not included.

Sustained Cycling Behaviour

The manufacturer rates contact life at more than 50,000 action cycles per switch. Under continuous duty the bimetal element maintains stable trip points without arc formation. Automatic reset allows repeated operation without manual intervention, supporting long-term temperature control in heating elements and motor protection circuits.

Highlights

  • Ten temperature choices from 40 to 100 °C cover many heating tasks
  • Normally closed contacts open at the set point for automatic overheat protection
  • Bimetal snap action gives fast response and more than 50,000 switching cycles
  • 3 mm quick-connect pins fit standard spade terminals without soldering
  • Supplied as a 10-piece kit in a hard plastic box with each value separated

Specifications

BrandUnique Bargains

Questions about this item

What mounting hardware do I need to install the 6.3 mm pin thermostats in this kit?

The thermostats have 6.3 mm wide pins, so you will need matching 6.3 mm female connectors or a terminal block to wire them into your circuit.

Can I mix these normally-closed KSD301 switches with an existing normally-open thermostat in the same heating circuit?

No, a normally-closed switch opens when its temperature is exceeded, while a normally-open one closes; mixing them would create opposite safety logic and could leave the heater unprotected.

How can I verify each thermostat trips at its labelled temperature after wiring the kit?

Heat the sensing disc gradually with a calibrated oil bath or hot-air gun and watch for the contact to open at the marked value — 40 °C, 45 °C, up to 100 °C — using a multimeter in continuity mode.

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