This listing includes 10 pieces of KSD303 manual reset thermostat normally closed temperature switch. With a trip temperature of 120C and a current rating of 10A, these switches are designed to provide reliable overheat protection in electrical equipment and appliances. The normally closed configuration keeps the circuit closed under normal conditions and opens when the temperature reaches 120C, after which a manual reset is required to restore operation. The KSD303 form factor is suitable for replacement or integration into compatible assemblies, and the set provides readytouse components for maintenance, repairs, or designs. Key benefits Overheat protection at 120C to prevent damage from excessive temperatures Manual reset ensures deliberate restart after tripping, improving safety control Normally Closed NC contact configuration simplifies wiring in safety circuits 10A current rating supports switching of common loads in household or small commercial equipment 10 pieces per pack for convenient stocking and replacement Simple installation and compatibility with standard KSD303 style switches Durable construction suited for ongoing reliability in thermal protection applications Key attributes Model: KSD303 Type: Manual reset thermostat switch Contact: Normally Closed (NC) Trip temperature: 120C Current rating: 10A Quantity: 10 pieces Function: Temperatureactivated switch for overheat protection Compatibility and use guidance Compatible as a replacement or addition in appliances and equipment that use KSD303 style switches Suitable for integration into circuits where a normally closed thermal switch is required to provide safety shutoff and a manual reset after overheating Use cases Overheat protection for household appliances such as coffee makers, toasters, or kettles, where the device should cut power if internal temperature rises to 120C Protection for small motors, transformers, power supplies, or other electrical equipment that require automatic shutoff upon reaching a critical temperature and a manual reset to resume operation Safety interruption in heating devices or soldering stations to prevent overheating and provide a clear reset process after cooling How it works The switch remains closed during normal operation. When ambient temperature reaches 120C, the switch trips and opens the circuit to prevent damage After cooling, the device requires a manual reset to restore contact and resume operation Maintenance and handling Inspect for signs of wear or mechanical damage before installation Mount and secure according to standard practices for KSD303 style switches Avoid exposure to excessive vibration or mechanical shock that could affect performance This description stays aligned with the model, specifications, and features indicated by the product title: 10PCS KSD303 10A 120C Degrees Celsius Manual Reset Thermostat Normally Closed Temperature Switch. It conveys practical benefits, key attributes, and concrete use cases in clear, customerfriendly language.