◇ structural features Features or structure BW9700 series temperature switch (thermal protector) is a sensitive bimetal disc, moving contact, static contacts, fixed base, housing, heat conductors and other components. Work bimetal in a free state, the moving contacts and static contacts closed, the circuit is turned on. When using electrical appliances that generate heat and temperature rise due to failure to operating temperature thermal protection, bimetal thermal stress rapidly generated action, leaving open the moving contact and static contacts disconnect the circuit, thereby cutting off electrical power failure since to the protection of electrical effects. When the temperature drops to protect the electrical thermal protection device rated reset temperature, bimetal restored to its original state contact closure, electrical resume normal operation. The product has a low resistance, temperature fast and prompt action, safety and reliability, small size and so on. BW9700 temperature switch products are suitable for the protective effect horsepower motor, rechargeable batteries, electric appliances, transformers, car motors, integrated circuits and general electrical equipment. ◇ Size A. ABS standard plastic shell: 20.6mm × 8.0mm × 4.3mm B. ABJ standard metal housing: 20.2mm × 7.6mm × 3.8mm C. BBS small size plastic housing: 16.5mm × 6.8mm × 3.7mm D . BBJ small size metal housing: 16.5mm × 6.5mm × 3.2mm ◎ Contact resistance: contacts in the closed state, the contact resistance between the two contacts thermal protector should be less than 30mΩ. ◎ Insulation resistance: 100MΩ above ◎ Electric Strength: applying a frequency of between thermal protection following basic parts of 50Hz sine wave test voltage (RMS), which lasted 1S should be no flashover and breakdown A breaking heat in the contact state. between the two lead wires under: In the normally closed contact condition between the lead and the shell surface of the insulating layer 500V B: 1500V