China Thermal Protector Manufacturer

China Micro Thermal Switches & thermostat manufacturer

Thermal Cut-Off Switch

Thermal cut-off switch is a temperature switch that uses bimetal as the temperature sensing element. The temperature control switch has the characteristics of small size, insulated shell, sensitive action and long life. Widely used in various motors, induction cookers, vacuum cleaners, electric heaters, electric heating appliances, car motors, and general electrical equipment.

Divided by model: BW, KW, BR, KSD9700, ST-22, AMT, RS9700, KSD01F, JUC31F, JUC1M, ST01, 17AM, KSD301, KSD302, KSD304.
Thermal Cut-Off Switch
ST01 U1 thermal protector
Product advantages:
• Temperature range: 60-250℃.
• The first domestic protector to obtain UL and TUV certification, breaking Germany's 30-year monopoly.
• Good sealing performance, which can prevent product failure during vacuum dipping process.
• Small size, suitable for being embedded inside the coil.
• Metal shell can withstand 50KG coil shaping pressure, has good thermal conductivity and is sensitive to temperature.
• Pure temperature product, the current does not pass through the bimetal piece, there is no current heating effect, and the temperature control is accurate.

Application scope:
• Motor
• Transformer
• Coil
• Electronic products, sensors
Anti-dry burning thermal switch
Supporting technology:
• Integrating global supply chain resources, the bimetallic sheet uses materials from the world's largest bimetallic sheet manufacturer, the United States EMS. The thermostat shell adopts the stamping and forming technology of the German supplier.
• The reeds are made of Japanese NGK materials and are processed and produced by Japanese stamping parts suppliers.
• The shell and reed are silver-plated, which greatly reduces the contact resistance.
• The core component bimetallic sheet is produced and tested using fully automated molding equipment and temperature screening tunnel kiln. Good consistency and stable performance.

Temperature switch technical parameters
1. Electrical parameters:
(1)CQC, VDE, UL, CUL? AC250V 50~60Hz 5A / 10A / 15A (resistive load)
(2)UL AC 125V 50Hz 15A (resistive load)
2. Operating temperature range: 0~240℃ (optional), temperature accuracy: ±2 ±3 ±5 ±10℃
3. Temperature difference between recovery and action: 8~100℃ (optional)
4. Wiring method: plug-in terminal 250# (bending 0~90° optional); plug-in terminal 187# (bending 0~90° optional, thickness 0.5, 0.8mm optional)
5. Service life: ≥ 100000 times
6. Electrical strength: AC 50Hz 1800V for 1 minute, no flicker, no breakdown.
7. Contact resistance: ≤50mΩ
8. Insulation resistance: ≤100MΩ
9. Contact form: Normally closed type: when the temperature rises, the contacts are disconnected; when the temperature drops, the contacts are connected; Normally open type: when the temperature rises, the contacts are connected; when the temperature drops, the contacts are disconnected.
10. Shell protection level: IP00
11. Grounding method: Connected to the grounded metal parts of the device through the metal shell of the thermostat.
12. Installation method: KSD301 series is equipped with ordinary movable rings, small round movable rings, flat plate movable rings, ordinary large aluminum covers with mounting holes, and extended aluminum covers with mounting holes.
13. Temperature working range: -25℃∽+240℃, tolerance +1℃∽2℃
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