Thermostat D (NC – Normally Closed)
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How it works: At temperatures below your set point, the circuit stays closed and power flows. When it gets too hot, it opens the circuit and cuts power.
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Best for: Overheat protection—shuts off heaters or motors when they reach your limit.
Thermostat H (NO – Normally Open)
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How it works: Below your set point, the circuit stays open and power is off. Once it’s too hot, it closes the circuit and switches power on.
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Best for: Cooling or alarms—automatically starts fans, pumps or warning signals when it gets too hot.
Quick Pick:
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Cut power at high temps? Go with D (NC).
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Turn something on at high temps? Choose H (NO).
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Ksd-01f temperature control switch product introduction:
Technical parameters:
Contact load :220 VAC 1A or 24 VDC 3A
Dimensions (total length× width× thick): 29.7× 10.2 × 4.7mm.
0-5 ℃ for each specification
Contact types: normally closed (-D) or normally open (-H)
Packaged in: TO-220 metal base plate.
Contact resistance: ≤ 50m.
Insulation value: ≥ 100m Ω (500VDC)
Insulation strength :1500 V/DC,60Hz
Standard tolerance: ± 5 ℃
Working environment temperature: – 55 ℃ – 160 ℃ (short time maximum temperature: 260 ℃ 10 seconds)
Weight ≤2g
How it works:
The KSD-01F temperature control switch adopts 100% conduction structure of TO-220 package, sudden jump, unipolar / single throw contact point, when the external temperature is too high
In this way, the circuit (normally closed or normally open) is cut off or connected. When the temperature drops to
When the temperature is reset, the bimetallic sheet will reset quickly and work repeatedly to ensure the safety of product temperature protection.
Product use:
Suitable for space-saving PC boards. Typical uses include alarm or shutdown systems when the circuit overheats, computers and computer peripherals, electrical equipment;
Electronic products; power supplies; aircraft, automobiles, medical equipment and test equipment; and control of mild thermal overload protection in household appliances and circuit boards.
