KSD9700 Bimetallic Thermostat with 50-150℃ Temperature Range and Bakelite Case for Snap-Action Thermal Protection
KSD9700 bimetallic thermostat with snap-action mechanism for reliable temperature control and protection.
H20, H21 series universal and enhanced protectors with large metal casing are composed of thermal conductive metal casing, bimetallic parts welded with silver alloy contact point, conductive bracket, insulation fixation stand, fixed contact strip and heat resistance cable.
In case of abnormal operation, when environment temperature increases to the set value, the bimetallic parts perform quick action, open the contact point, and disconnect the circuit. When the device cools to safe operating temperature, the contact point automatically closes and normal operation resumes.
| Parameter | Specification |
|---|---|
| Electrical Rating | DC-12V max 12A; DC-24V max 10A; AC-125V max 8A; AC-250V max 16A |
| Open Temperature | (30~150)±5°C; 5°C a step |
| Reset Temperature | 2/3 of the action temperature with tolerance of ±15°C. Custom reset temperature available per customer requirements. |
| Life Times | 10,000 cycles |
| Contact Closure Resistance | ≤50mΩ |
| Insulation Resistance | ≥100mΩ |
| Electric Strength | AC1500V/1min free from phenomena of breakdown and flashover |
| UL File No | E487478 |
| CQC Certificate No | CQC16002142880 |
| TUV Certificate No | B160592241002 |
| Model | Case | Length (mm) | Width (mm) | Height (mm) | Voltage & Current | Lead Wire |
|---|---|---|---|---|---|---|
| H20 | Plastic | 18.5 | 8 | 4 | DC-12V max 12A; DC-24V max 10A; AC-125V max 8A; AC-250V max 10A | #20 3135, end 5mm half tripping, length 70mm, or custom |
| H21 | Metal | 18.5 | 7.3 | 3.8 | - | - |
| H21 | Metal | 20 | 8 | 4 | AC250V 20A | - |
| BH-A1D | Metal | 15 | 6.6 | 3.2 | DC-12V max 12A; DC-24V max 10A; AC-125V max 8A; AC-250V | #20 3135, #22 3266, #22 3135, end 5mm half tripping, length 70mm, or custom |
| BH-B2D | Plastic | 15 | 7.1 | 3.8 | - | - |
| BH-TB02B-B8D | Plastic | 15 | 5.2 | 2.4 | DC-12V max 4A; DC-24V max 3A; AC-125V max 3A; AC-250V max 2A | 3266-AWG24#, 3135-AWG24# or nickel strip, length 70mm or custom |
H20, H21 series is applicable to chargeable batteries, ballasts, massagers, micro motors, transformers, electric tools, heat electric appliances and instruments.
Manual Reset Type: Temperature sensing components consist of bimetallic strip. When temperature reaches the action range, it jumps quickly and the movable disc disconnects. When temperature declines to a fixed point, the contact point cannot reset until reconnecting the circuit by pushing the reset button.
Important Notes:
- Manual reset thermostats can reset when temperature declines 20°C after snap action by pressing reset button with 4-6 N force
- Do not use excessive force
- Ensure normal function by maintaining minimum 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 jumps quickly and the movable disc disconnects. When temperature declines to a fixed point, the contact point automatically resets and starts working.
Product features UL, CQC, TUV and RoHS certification approval.
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