Bi-metal thermal protector

In the field of electronic equipment and appliances, temperature control is crucial to ensure the proper operation of the equipment and avoid possible damage. Bimetallic thermal protectors and thermal fuses are two common temperature protection devices that play an important role in protecting electronic equipment. Although their goals are similar, there are some key differences in how they work and where they can be used.

Thermal protectors are a more complex device, usually made from a bimetallic sheet with a positive temperature coefficient (PTC). This means that as the temperature increases, its resistance also increases. When the temperature in the circuit exceeds the preset safe value, the resistance of the thermal protector will increase rapidly, causing the current to decrease, thereby reducing the temperature of the circuit. This self-regulating property allows thermal protectors to effectively prevent equipment from overheating and automatically shut down the circuit in the event of overheating. Therefore, thermal protectors are widely used in various electronic equipment and appliances, such as motors, batteries, transformatory, itp.

⑴ electrical parameters:
1) CQC, VDE, ul, CUL AC250V 50 ~ 60Hz 5A / 10A / 15A (resistive load)
2) UL AC125V 50Hz 15A (resistive load)
⑵ operating temperature range: 0-300 ℃ (optional), temperature accuracy: ± 2 ± 3 ± 5 ± 10 ℃
⑶ recovery and action temperature difference: 8 ~ 100 ℃ (optional)
⑷ Connection: plug terminal 250 # (bend 0 ~ 90 ° optional); plug terminals 187 # (bend 0 ~ 90 ° optionally, the thickness 0.5,0.8mm optional)
⑸ life: ≥ 100,000 czasy
⑹ electrical strength: AC 50Hz 1800V lasted 1min, no flicker, no breakdown
⑺ Contact resistance: ≤50mΩ
⑻ Insulation resistance: ≥100MΩ
⑼ Contact form: Normally closed: temperature rise, contacts open, the temperature drops, contact connected;
Normally open type: temperature rise, contact connected, the temperature drops, contacts open
Normally open type: temperature rise, contact connected, the temperature drops, contacts open
⑽ shell protection grade: IP00
Installation: KSD301 Series Installation ordinary activities ring, ring install small round activities, installation of flat panel active ring, with mounting holes ordinary large aluminum cover with mounting holes lengthened aluminum cover.

● KSD301 series thermostat competitive advantage
⑴ stable performance
⑵ high precision
⑶ small size, light weight
⑷ high reliability, long life
⑸ small radio dry worry
⑹ do not pull the arc