Bimetallic Thermostat Temperature Protector with Normally Closed or Normally Open Auto Reset or Manual Reset Sealed Firmly for Over-Current and Over-Temperature Protection
The BW & BH series bimetallic thermostats provide reliable protection against over-current and over-temperature conditions. These sealed units feature small internal resistance, silent operation, and automatic reset functionality. The temperature and current-sensitive bimetallic components change state to either cut off or restore the circuit when abnormal conditions occur.
The BH series offers enhanced safety with no temperature effect lag during sudden current surges, making it superior to standard protectors.
| Specification | Details |
|---|---|
| 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 steps |
| Reset temperature | 2/3 of action temperature (±15°C tolerance). Custom reset temperatures available. |
| Life times | 10,000 cycles |
| Size | L15mm × W7.1mm × H3.8mm |
| Lead wire | #22 3266, end half tripping, 70mm length (custom options available) |
| Certifications | UL File: E487478 | CQC: CQC16002142880 | TUV: B160592241002 |
| Model | Case | Dimensions (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, 70mm length (custom options available) |
| H21 | Metal | 18.5 × 7.3 × 3.8 | AC250V 20A | #16 3135 |
| 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, 70mm length (custom options available) |
The ST01 temperature protector serves as an effective security device in various applications including:
- 1.5 horsepower motors
- Inverter welding machines
- Switch power supplies
- Fluorescent lamp ballasts
- Electric appliances and equipment
Enforced types capable of withstanding 3.5MPa pressure are suitable for plastic-coated motor installations.
| Code | Temperature | Code | Temperature |
|---|---|---|---|
| 30 | 30℃ | 100 | 100℃ |
| 35 | 35℃ | 105 | 105℃ |
| 40 | 40℃ | 110 | 110℃ |
| 45 | 45℃ | 115 | 115℃ |
| 50 | 50℃ | 120 | 120℃ |
All products are UL, CQC, TUV and RoHS certified.
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