Take control of your thermal safety with the KSD301 Manual Reset Thermal Switch. Unlike standard automatic models, this specialty thermostat is designed for high-sensitivity applications where a manual inspection is required before restarting the circuit. Once the device reaches its rated trip temperature—available in 55°C, 85°C, or 95°C—the internal bimetal disc snaps open, cutting power instantly. The circuit will remain open until the safety button is manually depressed.
Manual Reset Safety: Features an integrated reset button to ensure the user acknowledges an overheat condition before the equipment can resume operation.
Precise Trip Points: Choose from three critical temperature ratings for custom protection: 55°C, 85°C, or 95°C.
Normally Closed (NC) Operation: The switch maintains a closed circuit under normal operating conditions and only "opens" to break the circuit when the trip point is reached.
Snap-Action Bimetal Technology: Provides a quick, clean break in the electrical connection to prevent arcing and protect sensitive downstream components.
Durable Construction: Built with high-grade bimetal elements and a robust housing to withstand repeated thermal cycles.
This Manual Reset Thermostat is the ideal choice for:
Water Heaters & Boilers: Preventing dangerous pressure buildup by requiring a manual restart if temperatures exceed safety limits.
Industrial Machinery: Protecting motors and control boards where an overheat condition indicates a mechanical failure that needs inspection.
Kitchen Equipment: Safety cut-offs for commercial fryers and ovens where unattended automatic restarts could be hazardous.
Laboratory Appliances: Providing strict thermal control for temperature-sensitive experimental setups.
Reset Type: Manual (Push-Button).
Circuit Type: Normally Closed (NC).
Why should I use a manual reset instead of an automatic one?
Manual reset switches are used for critical safety. If a device overheats, you usually want to know why it happened before it turns back on. This switch forces a manual check of the system.
Can I press the reset button as soon as it trips?
No. The bimetal disc must cool down below the reset threshold before the button can be successfully engaged. If you press it while the unit is still too hot, it will simply stay open.
Are these compatible with standard KSD301 mounts?
Yes. These use the standard KSD301 footprint and mounting flange, making them easy to swap into existing designs that currently use automatic reset models.
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