Bimetallic Thermal Overload Protector 10A-40A Motor Thermal Protection Switch
Price:
please contact us
MOQ:
1000
Delivery Time:
5-7 work days
Brand:
HCET
Product Description
HCET Bimetallic Thermal Overload Protector 10A-40A for Motors & Compressors
HCET series customizable overload protector utilizes a precision-calibrated bimetallic strip that bends under abnormal current-induced heat. When temperatures exceed the preset threshold (e.g., motor overload or compressor failure), the strip triggers an instant mechanical cutoff (4-10s response) to prevent equipment damage. After cooling, the device auto-resets without manual intervention, ensuring continuous protection.
Product Specifications
| Attribute | Value |
|---|---|
| Product Name | HCET Bimetal Thermal Overload Protector |
| Material | Metal/PBT Case |
| Temperature Range | 30~180℃ |
| Tolerance | ±8℃, ±5℃ |
| Voltage | 30V DC / 250V AC |
| Current | Customizable |
| Application | Motors/Compressors |
Key Features & Applications
- Industrial Machinery: Safeguards motors (0.5-30kW), CNC machines, and pumps from burnout
- HVAC Systems: Protects compressors in commercial cooling units and heat pumps
- Renewable Energy: Stabilizes solar inverters and EV charging stations under voltage surges
- Harsh Environments: Operates in -30°C to 200°C for oil rigs, chemical plants, and marine equipment
Electrical Characteristics
Operating Temperature Range
30℃~180℃
Response Time
4S~10S
Temperature Tolerance
±5°C, ±8℃
Current Tripping Range
1A~45A
| Current/Voltage Rating | Specification |
|---|---|
| 45A / 15V DC | 15A / 30V DC |
| 25A / 250V AC | 30A / 125V AC |
Dimensions & Technical Drawings
Product Details
Application Examples

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Company
Nanjing Haichuan Electronic Co., Ltd.
Location
No.18, Huyue Road, Luhe Development, 211500 Nanjing, Jiangsu, China
Contact Person
Lily