9700K Auto Reset Thermal Fuse with 50-150℃ Temperature Range 10000 Life Cycles and Large Metal Casing

The H20 and H21 series universal and enhanced protectors feature large metal casings composed of thermal conductive metal casing, bimetallic parts welded with silver alloy contact point, conductive bracket, insulation fixation stand, fixed contact strip, and heat resistance cable. In case of abnormal operation, when the environment temperature increases to the set value, the bimetallic parts perform quick action to open the contact point and disconnect the circuit. When cooled to safe operating temperature, the contact point automatically closes to restore normal operation.

The H20/H21 series is suitable for chargeable batteries, ballasts, massagers, micro motors, transformers, electric tools, heat electric appliances, and instruments.

Temperature sensing components consist of bimetallic strip. When the temperature reaches the action temperature range, it will jump quickly and the movable disc disconnects. When the temperature declines to a fixed temperature point, the contact point cannot reset until reconnecting the circuit by pushing the reset button.

Important Notes:

• This type of manual reset thermostat can reset when the temperature declines 20°C after snap action by pressing the reset button (4~6 N recommended - avoid excessive force)
• To ensure normal function, the distance between the reset button and the close cover should not be less than 20.4mm