HCET-A TB02 Bimetal Thermal Protection Switch | Auto-Reset Cutoff for Motor, Water Pump, Heating Machine & Fan Motor

The HCET-A TB02 is a bimetallic thermal protection switch specially designed for high-load electromechanical equipment, integrating temperature sensing, circuit cutting and automatic reset. The device senses the internal temperature of the equipment by means of a precision bimetallic disc. When the motor, pump, heater or fan heats up abnormally due to overload or blockage, the thermal protection switch will instantly trigger the circuit to be cut off, and then automatically reset after the temperature drops to prevent the equipment from burning out.

• Bimetal thermal control core technology - High-precision bimetallic disc (Snap-Action Disc), responding to the temperature range of 30℃~155℃, action accuracy ±3℃
• Mechanical physical trigger - No risk of aging of electronic components, suitable for wet, vibration environments (such as water pumps, power tools)
• Protection Mechanism - Thermal Protection Switch (resettable), Automatic power-off threshold: 35℃~150℃ (preset by equipment type), Cycle life: ≥30,000 times (25℃ environment test)
• Industrial-grade durable design - High load capacity: 2.5A/250VAC, withstands instantaneous motor start current shock
• Versatile Adaptability - Quick installation: two types of connection: plug terminal/lead wire
• Cross-industry applications - Motor/pump: plugging overheat protection; Heating equipment: dry burning protection; Fans: Temperature-controlled power-off for bearing failure; Power tools: lithium battery pack overcharge protection
• Safety and economy - Automatic reset reduces downtime losses, reducing maintenance costs by 70% compared to traditional disposable fuses; Contact material: silver alloy + nickel-plated layer, contact resistance ≤ 50mΩ