Bimetallic Strip Thermal Overload Protector Switch For Electric Heater
Price:
0.19 / pieces
MOQ:
1000PCS
Delivery Time:
7 days
Brand:
HENGHAO
Product Description
Bimetallic Strip Thermal Overload Protector Switch For Electric Heater
BW thermal protectors for electric heater
Principle and Structure
BW series thermal protector uses a specific geometry of bimetallic strip that, without auxiliary mechanisms, directly senses mild heating current. The bimetallic element rapidly changes state to automatically drive contact cutting and process circuit functions, providing both overheating and overload protection.
Applications
Widely applied in electric motors and electrical equipment including: electric blankets, hot walls, washer motors, soybean milk machine motors, fan motors, air conditioner motors, fractional motors, DC motors, AC brushless motors, water pumps, transformers, rectifiers, lighting systems, rechargeable batteries, and electric heating appliances.
Specifications
- Contact type: Normally closed and Normally open
- Electrical rating: 10A/AC120V; 8A/AC250V; 10A/AC250V; 16A/AC250V
- Circuit resistance: ≤50mΩ (Initial value)
- Insulation resistance: ≥100mΩ
- Action temperature range: 40~150℃
- Case: Metal case and plastic case
- Life: ≥10,000 cycles
Dimensions
| Model | L(mm) | W(mm) | H(mm) | Electrical Rating | Lead Wire (mm) |
|---|---|---|---|---|---|
| BW metal | 20 | 7.5 | 3.8 | 5A/250V; 10A/250V | AWG#22, AWG#18 high temperature silicone wire L1=L2=70mm, or according to customer requirements |
| BW metal | 20 | 8.0 | 4.1 | 16A/250V | AWG#22, AWG#18 high temperature silicone wire L1=L2=70mm, or according to customer requirements |
| BW plastic | 20 | 8.0 | 4.0 | 5A/250V; 10A/250V | AWG#22, AWG#18 high temperature silicone wire L1=L2=70mm, or according to customer requirements |
Temperature Specifications
| Code | Open Temp. | Reset Temp. | Code | Open Temp. | Reset Temp. |
|---|---|---|---|---|---|
| 40 | 40℃±5℃ | ≥30℃ | 100 | 100℃±5℃ | 70±10℃ |
| 45 | 45℃±5℃ | ≥30℃ | 105 | 105℃±5℃ | 70±12℃ |
| 50 | 50℃±5℃ | ≥30℃ | 110 | 110℃±5℃ | 75±12℃ |
| 55 | 55℃±5℃ | ≥30℃ | 115 | 115℃±5℃ | 80±12℃ |
| 60 | 60℃±5℃ | 40±10℃ | 120 | 120℃±5℃ | 85±12℃ |
| 65 | 65℃±5℃ | 45±10℃ | 125 | 125℃±5℃ | 90±12℃ |
| 70 | 70℃±5℃ | 50±10℃ | 130 | 130℃±5℃ | 95±12℃ |
| 75 | 75℃±5℃ | 55±10℃ | 135 | 135℃±5℃ | 100±12℃ |
| 80 | 80℃±5℃ | 60±10℃ | 140 | 140℃±5℃ | 105±12℃ |
| 85 | 85℃±5℃ | 65±10℃ | 145 | 145℃±5℃ | 110±12℃ |
| 90 | 90℃±5℃ | 70±10℃ | 150 | 150℃±5℃ | 115±12℃ |
| 95 | 95℃±5℃ | 75±10℃ |
Competitive Advantages
- Small size and easy installation
- Quick bimetallic strip, fast reaction
- Life cycle exceeds 10,000 cycles
- Prevention against vacuum impregnation process leaks
- Replacement for SENSATA 17AM 7AM, SEKI ST-22, etc.
Technical Drawings
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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