uxcell KSD301 Thermostat Switch, 30°C, 16A Normally Closed, 2-Pack

With 6.3 mm-wide pins, the uxcell KSD301 is a normally closed thermal control switch for appliance circuits. Its contacts remain closed in the original state and open when the sensed temperature exceeds the rated 30°C. Choose this switching sequence when a circuit needs continuity below its temperature threshold, rather than a normally open switch that closes as temperature rises.

Everyday use

This two-piece set is intended for temperature-control applications in appliances such as microwaves, ovens and coffee makers. The switch’s role is specific: it responds to temperature by changing the contact state, giving a suitable circuit a defined switching point. Its 16A current rating and 125V AC operating voltage help identify whether it matches the requirements of the appliance circuit being serviced.

For a repair, the practical fit comes down to the required operating temperature, normally closed action, electrical ratings and terminal connection. The floating flange is described as easy to install, while the 6.3 mm pin width is a useful measurement when matching the switch to the existing connection. Check that the appliance’s design calls for this switching behaviour and that its electrical requirements align before fitting.

Where it shines

The KSD301 is suited to applications that call for a compact thermal switch rather than a temperature control with a different operating sequence. Beyond microwaves, ovens and coffee makers, listed uses include heaters, dryers, water heaters, electric irons and air conditioners. This range makes the fixed 30°C switching point relevant to several types of heat-related appliance circuits, provided the circuit is designed for the switch’s ratings and normally closed operation.

The double-metal-chip construction is described as a dynamic thermal response, with sensitive operation and stable action temperature. In practical terms, these characteristics support a switch designed to change state in response to sensed heat. When comparing replacement approaches, a normally closed thermal switch is the appropriate type where the circuit must stay connected until the temperature passes its rated point, a different contact arrangement serves a different control sequence.

Tech summary

• Type: Thermal control switch
• Model: KSD301
• Operating temperature: 30°C
• Contact type: Normally closed (N.C.), opens when sensed temperature exceeds the rating
• Current rating: 16A
• Operating voltage: 125V AC
• Connector: Pin header, 6.3 mm pin width
• Mounting: Floating flange
• Material: Bakelite
• What’s included: 2 switches

Questions before you buy

What does normally closed mean? The contacts are closed in the switch’s original state. When the sensed temperature exceeds 30°C, they open, interrupting the circuit’s continuity.

Which electrical details should I match? Confirm that the appliance circuit uses a normally closed switch and that its requirements suit the 30°C operating point, 16A current rating and 125V AC voltage. The pin width is 6.3 mm, which can help when checking the connection fit.

What appliances is this switch intended for? Listed applications include microwaves, ovens, coffee makers, heaters, dryers, water heaters, electric irons and air conditioners. Its suitability depends on the appliance’s required switching behaviour and electrical ratings.

Buying verdict

For appliance servicing that calls for a 30°C, normally closed thermal switch, the uxcell KSD301 combines a defined opening response with 16A and 125V AC ratings. The two-switch set is a practical choice when those specifications, the 6.3 mm pin connection and the appliance’s circuit design all match the replacement need.