KSD301 250V 16A KSD302 KSD303 Bimetal Temperature Control Switch
The KSD series thermostat operates on the principle of bimetal discs that snap into action when temperature changes occur. This snap action activates the internal contacts, either connecting or disconnecting the circuit. Key features include fixed working temperature settings, reliable snap action, minimal flashover, extended operational lifespan, and reduced radio interference.
KSD301 Thermostat Specifications
| Parameter |
Specification |
| 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 Types |
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 |
KSD301 Auto Reset vs Manual Reset Types
Manual Reset Type
Temperature sensing components consist of bimetallic strip. When temperature reaches the action range, it snaps quickly and the movable disc disconnects. When temperature declines to a fixed point, the contact cannot reset automatically. The circuit must be reconnected by pushing the reset button to restore contact points and restart the circuit.
Important Notes:
- Manual reset thermostats can reset when temperature declines 20°C after snap action by pressing the reset button with 4-6 N force (avoid excessive strength)
- For normal function, maintain at least 20.4mm distance between reset button and close cover
Auto Reset Type
Temperature sensing components consist of bimetallic strip. When temperature reaches the action range, it snaps quickly and the movable disc disconnects. When temperature declines to a fixed point, the contact automatically resets and resumes operation.
KSD301 Bimetal Thermostat Applications
Used for temperature control in household electric appliances including coffee pots, automatic toasters, laminators, electric water pots, steam guns, steam irons, wind warmers, microwave ovens, water dispensers, and similar equipment.
Temperature Settings Reference
| 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 holds UL, CQC, TUV and RoHS certification approvals.