محافظ حرارتی دو فلزی

در زمینه تجهیزات و لوازم الکترونیکی, کنترل دما برای اطمینان از عملکرد صحیح تجهیزات و جلوگیری از آسیب احتمالی بسیار مهم است. محافظ های حرارتی دو فلزی و فیوزهای حرارتی دو وسیله رایج حفاظت از دما هستند که نقش مهمی در حفاظت از تجهیزات الکترونیکی دارند.. اگرچه اهداف آنها مشابه است, تفاوت های کلیدی در نحوه کار و مکان استفاده از آنها وجود دارد.

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. از این رو, thermal protectors are widely used in various electronic equipment and appliances, such as motors, batteries, ترانسفورماتورها, OTC.

⑴ electrical parameters:
1) CQC, VDE, UL, CUL AC250V 50 ~ 60Hz 5A / 10بوها / 15بوها (resistive load)
2) UL AC125V 50Hz 15A (resistive load)
⑵ operating temperature range: 0-300 ℃ (اختیاری), temperature accuracy: ± 2 ± 3 ± 5 ± 10 ℃
⑶ recovery and action temperature difference: 8 ~ 100 ℃ (اختیاری)
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 بار
⑹ electrical strength: AC 50Hz 1800V lasted 1min, no flicker, no breakdown
⑺ Contact resistance: ≤50mΩ
⑻ Insulation resistance: ≥100MΩ
⑼ Contact form: به طور معمول بسته است: 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
نصب و راه اندازی: 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, وزن سبک
⑷ high reliability, long life
⑸ small radio dry worry
⑹ do not pull the arc