KSD301 Bimetal Thermostat Temperature Switch with 0-250℃ Range 100000 Cycles and Normally Closed Contact
The KSD series thermostat operates on the principle of bimetal discs that snap into action when temperature changes occur. This snap action engages the internal contacts, ultimately controlling the circuit by opening or closing it. Key features include fixed working temperature settings, reliable snap action, minimal flashover, extended operational lifespan, and reduced radio interference.
For detailed specifications of the KSD302 thermostat, refer to the following table:
| Voltage & Current | AC 125V max 15A; AC250V 5A 10A 15A max 16A |
| Action Temperature | 0~250℃ |
| Recovery and Action Temperature Difference | 0 to 25 degrees, or according to client's request |
| Temperature Deviation | ±3 / ±5 / ±10 degree or according to client's request |
| Circuit Resistance | ≤50mΩ (Initial value) |
| Insulation Resistance | AC50Hz 1500V / min, no breakdown blinding (Normal State) |
| Life Cycle | ≥100,000 times |
| Contact Type | Normally closed or Normally open |
| Mounting Bracket | Two kinds: movable or immovable |
| Terminal Type | a. Terminal type: 187 series of 4.8*0.5mm and 4.8*0.8mm, 250 series of 6.3*0.8mm b. Terminal Angle: bending angle: 0~90°C optional |
| Housing | Plastic or ceramic |
| Temperature Sensor Face | Aluminum cap or copper head |
Temperature sensing components consist of bimetallic strip. When the temperature reaches the action temperature range, it snaps quickly and the movable disc disconnects. When the temperature declines to a fixed temperature point, the contact point cannot reset until the circuit is reconnected by pushing the reset button. The contact points then recover, achieving the purpose of connecting or disconnecting the circuit and restarting the circuit by manual reset.
Important Notes:
- This type of manual reset thermostat can reset when the temperature declines 20°C after snap action by pressing the reset button. Apply 4~6 N of force; avoid using excessive strength.
- To ensure normal function, the distance between the reset button and the close cover should not be less than 20.4mm.
Temperature sensing components consist of bimetallic strip. When the temperature reaches the action temperature range, it snaps quickly and the movable disc disconnects. When the temperature declines to a fixed temperature point, the contact point automatically resets and resumes operation.
Application temperature settings for the KSD302 bimetal thermostat:
| Open Temp. | Reset Temp. | Open Temp. | Reset Temp. | Open Temp. | Reset Temp. |
|---|---|---|---|---|---|
| -20℃±5℃ | 5℃±5℃ | 95℃±5℃ | 80℃±5℃ | 205℃±5℃ | 175℃±10℃ |
| -15℃±5℃ | 5℃±5℃ | 100℃±5℃ | 80℃±10℃ | 210℃±5℃ | 180℃±10℃ |
| -10℃±5℃ | 5℃±5℃ | 105℃±5℃ | 85℃±10℃ | 215℃±5℃ | 185℃±10℃ |
| 0℃±5℃ | -10℃±5℃ | 110℃±5℃ | 90℃±10℃ | 220℃±5℃ | 190℃±10℃ |
| 5℃±5℃ | -5℃±5℃ | 115℃±5℃ | 95℃±10℃ | 225℃±5℃ | 195℃±10℃ |
| 10℃±5℃ | 0℃±5℃ | 120℃±5℃ | 100℃±10℃ | 230℃±5℃ | 200℃±10℃ |
| 15℃±5℃ | 5℃±5℃ | 125℃±5℃ | 105℃±10℃ | 235℃±5℃ | 205℃±10℃ |
| 20℃±5℃ | 5℃±5℃ | 130℃±5℃ | 110℃±10℃ | 240℃±5℃ | 210℃±10℃ |
| 25℃±5℃ | 10℃±5℃ | 135℃±5℃ | 115℃±10℃ | 245℃±5℃ | 215℃±10℃ |
| 30℃±5℃ | 15℃±5℃ | 140℃±5℃ | 120℃±10℃ | 250℃±5℃ | 220℃±10℃ |
| 35℃±5℃ | 20℃±5℃ | 145℃±5℃ | 125℃±10℃ | 255℃±5℃ | 225℃±10℃ |
| 40℃±5℃ | 25℃±5℃ | 150℃±5℃ | 130℃±10℃ | 260℃±5℃ | 230℃±10℃ |
| 45℃±5℃ | 30℃±5℃ | 155℃±5℃ | 130℃±10℃ | 265℃±5℃ | 235℃±10℃ |
| 50℃±5℃ | 35℃±5℃ | 160℃±5℃ | 135℃±10℃ | 270℃±5℃ | 240℃±10℃ |
| 55℃±5℃ | 40℃±5℃ | 165℃±5℃ | 140℃±10℃ | 275℃±5℃ | 245℃±10℃ |
| 60℃±5℃ | 45℃±5℃ | 170℃±5℃ | 145℃±10℃ | 280℃±5℃ | 250℃±10℃ |
| 65℃±5℃ | 50℃±5℃ | 175℃±5℃ | 150℃±10℃ | 285℃±5℃ | 255℃±10℃ |
| 70℃±5℃ | 55℃±5℃ | 180℃±5℃ | 155℃±10℃ | 290℃±5℃ | 260℃±10℃ |
| 75℃±5℃ | 60℃±5℃ | 185℃±5℃ | 155℃±10℃ | 295℃±5℃ | 265℃±10℃ |
| 80℃±5℃ | 65℃±5℃ | 190℃±5℃ | 160℃±10℃ | 300℃±5℃ | 270℃±10℃ |
| 85℃±5℃ | 70℃±5℃ | 195℃±5℃ | 165℃±10℃ | Or according to client's request | |
| 90℃±5℃ | 75℃±5℃ | 200℃±5℃ | 170℃±10℃ | ||
This product has UL, CQC, TUV and RoHS certification approval.
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