Nanjing Haichuan Electronic Co., Ltd.
                                                                                                           
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16 Years
Since 2010
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Bimetallic Thermal Overload Protector 10A-40A Motor Thermal Protection Switch

Price Negotiable
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
HCET Thermal Overload Protector dimensional drawing HCET Thermal Overload Protector size specifications
Product Details
Close-up view of HCET Thermal Overload Protector components Detailed construction of HCET Thermal Overload Protector
Application Examples
HCET Thermal Overload Protector installed in industrial motor application

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Have questions about our products or want to discuss a custom order? Our team is ready to help you.

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

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