The KSD303 10A 55C manual reset thermostat is a normally closed temperature switch designed to protect small appliances and electronic equipment from overheating. This listing includes 10 pieces. The device trips when the ambient or component temperature reaches 55C and requires a manual reset to restore operation. It provides a reliable, simple means of overtemperature protection with a clear, resettable safety mechanism. Key benefits Overheat protection: prevents damage to devices by cutting power once the set temperature is reached. Manual reset: ensures a deliberate restart after a trip, reducing the risk of repeated automatic reclosures. Normally Closed configuration: maintains circuit continuity under normal temperatures and opens only when the setpoint is exceeded. Quick replacement and easy integration: designed for straightforward installation in compatible circuits. Value pack: 10 pieces per package, suitable for multiple applications or stocking needs. Key attributes Model: KSD303 Type: Manual reset thermostat / temperature switch Setpoint: 55C Current rating: 10A Contact configuration: Normally Closed (NC) Reset action: Manual Compatibility and performance Suitable for circuits and appliances that require NC thermal protection with a 10A load rating. Provides a clear trip at 55C and requires manual reset to reclose, ensuring controlled restart after overheating. Packaged as a set of 10 identical units for consistency across multiple applications or replacements. Size and construction notes This description reflects the KSD303 series characteristics: compact temperature switch designed for integration into small devices and enclosures. Material details are not specified here; reference product specifications for exact housing and terminal construction when selecting mounting methods. Applications and use cases Overtemperature protection in small household appliances such as coffee makers, toasters, or compact heaters to prevent heatrelated damage. Temperature safety switch for power supplies, transformers, or other electronic components that require a 55C trip point and NC operation. Use in DIY electronics projects or enclosures where a resettable overheat cutoff is needed to safeguard components and users. Usage guidance Ensure the load current does not exceed 10A for each unit in operation. likeforlike when replacing a failed unit to maintain consistent protection characteristics. After tripping, manually reset the device to restore circuit operation once the temperature has been reduced below the setpoint. Package contents 10 pieces of KSD303 10A 55C manual reset thermostat normally closed temperature switch.