KSD-01F H50C TO-220 (2leg) Code: 50619732

The KSD-01F H50C is a compact, snap-action bimetallic thermal switch. It functions as a resettable thermostat that automatically closes or breaks a circuit when its temperature reaches 50° C. Designed in a TO-220 package, it is primarily used for PCB-level overheat protection. [

Core Specifications

• Action Type:Normally Open (NO) – the switch remains open at room temperature and closes when the temperature reaches 50° C.
• Action Temperature:50° C ± 5° C
• Contact Load Rating:5A at 250V AC, or 1.5A at 24V DC
• Package:TO-220 metal base plate (ideal for mounting on heat sinks or circuit boards)
• Contact Resistance:< 50m Ω
• Dimensions:Approximately 29.7 × 10.2 × 4.7mm
• Insulation Value:> 100M Ω (500VDC)
• Tolerance:± 5° C

Common Applications

• Thermal Overload Protection:Safeguards circuit boards, power supplies, and IGBTs in inverter welders from overheating.
• Small Appliances:Used for temperature management in heating appliances like water kettles and space heaters.
• Automatic Cooling/Ventilation:Used to trigger cooling fans or warning LEDs once the environment or heat sink exceeds 50° C.