Resettable Thermal Switch
- PRODUCT DETAIL
When it is in the closed working state, the moving contact maintains close contact with the static contact under the pre-stress caused by the bending deformation of the leaf spring.
When the external temperature rises, the height of the protrusion of the dish-shaped bimetal becomes gradually smaller. When the temperature rises to the upper limit of the design temperature of the dish-shaped bimetal, the dish-shaped bimetal suddenly bulges in the opposite direction. Through the ceramic rod, a thrust force on the leaf spring is generated to push the leaf spring to move downward, thereby separating the moving contact and the static contact, and realizing the function of cutting off the circuit. The work done by the thrust is converted into the deformation energy of the leaf spring and stored in the leaf spring.
When the external temperature decreases, the height of the protrusion in the opposite direction of the dish-shaped bimetal gradually decreases.
When the temperature drops to the lower limit of the design temperature of the dish-shaped bimetal, the dish-shaped bimetal jumps backwards. At this time, the thrust force acting on the leaf spring suddenly disappears, and the leaf spring drives the moving contact to the static contact under the deformation energy stored in the interior, and finally the dynamic and static contact is in a contact state, thereby achieving the function of closing the circuit. The separation and contact of the moving contact and the static contact, completed a working stroke of the sudden temperature controller, and realized the function of cutting and closing the circuit
A thermal protection switch with an automatic circuit breaker has a snap-action disc-type thermal switch. The bimetal disc of the thermal switch controls a transmission pin protruding from the bimetal disc by speed action. The drive pin controls, on the one hand, a docking bridge in a wire connecting the two connectors. On the other hand, it cooperates with a mechanical reset controller in the form of a button, so that after the docking bridge is opened under the influence of temperature, the transmission pin can reset the bimetal disc by pressing the button. It is characterized by: The button designed as a hollow round corpuscle is at least partially translucent, and there is no light source in its inner cavity connected by a separate wire between the above two joints. The light source is provided with a current limiting resistor, so that under normal operating conditions, that is, when the docking bridge is closed, the light source does not emit light, but when the docking bridge is open, the light source emits light.
● resettable thermal switch Product Specifications
⑴ Function: temperature protection and thermal protection, anti-dry
⑵ Electrical Characteristics: AC250V / 15A ~ 30A ~ 40A ~ 50A ~ 60A
⑶ Maximum ambient temperature: 180 ℃
⑷ Operating temperature range: 0 ℃ ~ 180 ℃ (optional). Temperature tolerance: ± 5
⑸ normal insulation resistance:> 100MΩ
⑹ normal contact resistance: ≤100mΩ
⑺ life:> 10,000 or more
● resettable thermal switch Product Precautions
⑴ When using a contact temperature installation should be closely aligns the charged surface of the metal lid of the appliance mounting surface.
⑵ When installing the cap can not face pressure deformation, so as not to affect the performance.
⑶ To prevent leakage, can not allow the use of liquid into the interior temperature, so as not to affect the electrical reliability.
⑷ This product is a bipolar wiring, when used according to label symbols, correct wiring.
⑸ product should be less than 90% relative humidity, ambient temperature below 40 ℃ ventilated, clean, dry, non-corrosive gases stored in the warehouse.