SUS 400C Auto Reset Bimetal Temperature Switch with UL TUV certification, featuring bulb and capillary design for precise thermal regulation in industrial applications.

• Compact design with insulated shell construction
• Precise temperature sensing with smart action mechanism
• Extended operational lifespan exceeding 100,000 cycles
• Wide temperature range: 0°F to 700°F
• Maximum ambient temperature: 250°F
• Multiple switch configurations: SPDT or DPDT
• Fixed or adjustable temperature settings
• High current capacity: 15-30 Amps per switch
• Automatic or manual reset options

• Water heaters and electric water boilers
• Electric ovens and heating equipment
• Washing machines and laundry appliances
• Commercial fryers and kitchen equipment
• Industrial thermal management systems

The bulb and capillary thermostat utilizes thermal expansion principles where refrigerant in the temperature sensing portion expands or contracts with temperature changes. This volume change activates the membrane cartridge, which through leverage mechanics drives the switch action to achieve precise temperature control. The WK series offers accurate temperature regulation with minimal temperature differential, wide control range, and high current capacity.

1. Select appropriate model based on specific product requirements and temperature control needs
2. Install temperature sensor close to controlled surface for accurate thermal regulation
3. Avoid pressure deformation during installation to maintain performance integrity
4. Prevent conductive gases or materials from contacting thermostat to ensure electrical insulation
5. Use appropriate M4 screw length for mounting bracket to prevent internal damage
6. Handle electrical ceramic switch box components with care to avoid breakage
7. Maintain minimum 5mm bending radius for capillary tube