Auto Reset Thermal Fuse with Bimetallic Thermostat for Over-Current Protection and Normally Closed/Open Function
Price:
USD 0.1~0.5PCS
MOQ:
1000PCS
Delivery Time:
10~15WORKDAYS
Brand:
HENGHAO
Product Description
H21 Auto Reset Thermal Fuse BW-ABS Temperature Controlled Switch KSD9700 Thermal Fuse
BW & BH series thermal fuses provide reliable protection against over-current and over-temperature conditions. These sealed units feature small internal resistance, operate silently, and reset automatically. The temperature-sensitive bimetal component responds to abnormal conditions by changing state to either cut off or restore the circuit.
BH Series Thermostat Specifications
| 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 temperatures available. |
| Life times | 10000 cycles |
| Size | L15mm W7.1mm H3.8mm |
| Lead wire | #22 3266, end half tripping, length is 70mm (customizable) |
| Certifications | UL File no: E487478 CQC no: CQC16002142880 TUV no: B160592241002 |
BH Series Thermal Protector Dimensions
| 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, length 70mm (customizable) |
| 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 (customizable) |
Temperature Codes
| Code | Temperature | Code | Temperature |
|---|---|---|---|
| 30 | 30℃ | 100 | 100℃ |
| 35 | 35℃ | 105 | 105℃ |
| 40 | 40℃ | 110 | 110℃ |
| 45 | 45℃ | 115 | 115℃ |
| 50 | 50℃ | 120 | 120℃ |
Applications
BH series thermal protectors are effective security devices used in:
- 1.5HP motors
- Lighting devices
- Inverter welding machines
- Switch power supplies
- Rechargeable battery packs
- Portable power tools
- Various electric appliances
H20/H21 Series Principle and Structure
These universal protectors feature large metal casings containing thermal conductive components, bimetallic parts with silver alloy contacts, conductive brackets, and insulation stands. During abnormal operation, rising temperatures trigger the bimetallic components to open the circuit, which automatically resets when safe temperatures are restored.
All products are UL, CQC, TUV, and RoHS certified.
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Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.
Company
Dongguan Heng Hao Electric Co., Ltd
Location
No.9, five lane, Shangchegang, Shangtang road, Gekeng, Hengli Town, Dongguan City, Guangdong, China
Contact Person
Cherry Lee