Temperature Switch Thermostat Auto Reset Thermal Fuse Temperature Controlled Switch
The KSD series thermostat operates on the principle of bimetal discs snapping into action when sensing temperature changes. This snap action activates internal contacts to open or close the circuit. Key features include fixed working temperatures, reliable snap action, minimal flashover, extended service life, and reduced radio interference.
KSD302 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 |
≥100000 times |
| Contact type |
Normally closed or Normally open |
| Mounting bracket |
Movable or immovable |
| Terminal type |
187series of 4.8*0.5mm and 4.8*0.8mm, 250 series of 6.3*0.8mm |
| Terminal Angle |
Bending angle: 0~90°C optional |
| Housing |
Plastic or ceramic |
| Temperature sensor face |
Aluminum cap or copper head |
KSD302 Auto Reset vs Manual Reset Types
Manual Reset Type
Temperature sensing components consist of bimetallic strip. When temperature reaches the action range, it quickly disconnects. The contact point cannot reset automatically - it requires manual reset by pushing the reset button when temperature declines by 20°C (4-6N force recommended). Ensure at least 20.4mm clearance between reset button and cover.
Auto Reset Type
Temperature sensing components consist of bimetallic strip. When temperature reaches the action range, it quickly disconnects. The contact point automatically resets when temperature declines to the specified point.
Temperature Settings
| 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℃ |
Custom temperature settings available according to client requirements.
Certifications: UL, CQC, TUV and RoHS approved.
KSD301 Thermostat Specifications
Electrical Rating:
AC 125V max 15A; AC250V 5A 10A 15A max 16A
Action Temperature:
-10~300℃
Temperature deviation:
±3 / ±5 / ±10℃ or custom
Circuit resistance:
≤50mΩ (Initial value)
Insulation resistance:
≥100mΩ (DC500V Normal State)
Dielectric Strength:
AC50Hz 1500V/min, no breakdown (Normal State)
Life cycle:
≥100,000 operations
Applications
Widely used in household appliances including coffee pots, toasters, laminators, electric water pots, steam irons, microwave ovens, water dispensers, and more.
Certifications: UL, CQC, VDE and RoHS approved.
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