KSD303 10PCS Manual Reset Thermostat — 10A, 100°C, Normally Closed Temperature Switch Key benefits Reliable overtemperature protection: the KSD303 closes the circuit under normal conditions and opens at 100°C to interrupt power, helping prevent overheating and equipment damage. Manual reset for added safety: once tripped, the switch must be manually reset, preventing automatic reclosing and reducing the risk of repeated thermal cycling or unattended restarts. Simple and costeffective replacement or spare: sold as a 10piece set for maintenance, , or bulk installations where consistent temperature cutoff is needed. What it does and why you need it Acts as a mechanical temperature limit switch that interrupts current when the sensing element reaches 100°C. Useful wherever a reliable, setpoint temperature cutoff is required. The normally closed (NC) configuration keeps the circuit connected during normal operation and opens on overtemperature, providing a straightforward safety function. Manual reset requires an operator to inspect and actively restore operation after a trip, improving safety in applications where unattended automatic reset is undesirable. Key attributes Model: KSD303 Quantity: 10 pieces per pack Rated switching capability: 10A (do not exceed this current rating) Trip temperature: 100°C (degrees Celsius) Switch type: Normally closed (NC) — opens at the set temperature Reset type: Manual reset (requires manual action to close after trip) Function: Temperatureactuated on/off switching for overtemperature protection Compatibility and performance notes Designed for use where a 100°C manualreset limit switch with a 10A rating is required. Confirm system voltage, terminal type, and mounting requirements before installation. Mechanical operation provides dependable performance without electronic control; suitable for environments where a simple, rugged thermal cutoff is preferred. For safe operation, use within specified current limits and proper wiring. worn or damaged switches promptly. Common applications Appliance and heating equipment safety: as a temperature limit or overheat protector in heaters, ovens, and similar equipment that require a manual reset cutout. Industrial and electrical equipment: motor or transformer protection, power supply cabinets, and control enclosures where a 100°C limit and manual reset behavior are appropriate. Maintenance and : replacement part for machines and devices that specify a KSD303 100°C normally closed thermostat rated for 10A. Installation and usage tips Verify system voltage and terminal compatibility; ensure the switch is rated for the actual operating current and environment. Mount the thermostat where it accurately senses the component or ambient temperature you intend to monitor. After a trip, inspect the equipment for the cause of overheating before manually resetting the switch. Do not exceed the 10A rating and avoid exposing the switch to conditions (corrosive environments, excessive vibration, or moisture) if not specified for such use. Package contents 10 x KSD303 manual reset temperature switches Each unit: normally closed, 100°C trip, 10A switching capability this 10piece pack of KSD303 thermostats when you need a straightforward, reliable manualreset temperature cutoff at 100°C for repairs, spares, or installations.