KSD-01F H45C TO-220 (2leg) Code: 32457362

The KSD-01F H45C is a highly compact, bimetallic thermal switch or thermostat commonly used for thermal overload protection and temperature control on circuit boards and heat sinks.

Key specifications for this specific model include:

• Temperature Threshold:45°C (tolerance of ± 5°C)
• Contact Configuration:Normally Open (NO / sometimes designated with an “H”) – the circuit remains disconnected until the ambient temperature reaches 45°C, at which point the switch closes.
• Electrical Rating:Typically supports up to 220V AC at 1A (or 250V AC at 1.5A to 3A) and 24V DC at 3A.
• Form Factor:TO-220 package style, measuring approximately 30 mm × 10 mm × 5 mm, making it easy to mount on flat heat sinks or circuit boards.
• Action Type:Automatic resettable snap-action – once the equipment cools down, the switch will automatically revert to its open state.
• Insulation Resistance:≥ 100 MΩ
• Contact Resistance:≤ 50 mΩ