Apa yang Biasanya Terbuka (TIDAK) Saklar Termostat KSD301?

Cakram bimetalik Saklar Termostat KSD301 beroperasi dalam keadaan Biasanya Terbuka (TIDAK) konfigurasi. Ini berarti rangkaian awalnya terbuka (terputus) pada suhu normal. Ketika suhu naik ke ambang batas yang telah ditentukan, piringan bimetalik tertekuk, menutup rangkaian dan membiarkan arus mengalir.

Normally open THERM-O-DISC T-O-D THERMAL LIMIT SWITCH L160-40F 60TX01

UL/CUL KSD301 Shutoff Thermostat,Normally Open NO Bimetal Snap Disc 125V 16A Auto Reset

Uxcell KSD301 Termostat 40°C/104°F 10A Biasanya Terbuka N.O Sakelar Suhu Snap Disc Sesuaikan

SAYA. Core Features
‌Operation Principle‌
When the temperature rises to the set value, the contact automatically connects the circuit; when the temperature drops to the reset value, the contact automatically disconnects the circuit, which is the opposite of the normally closed type (disconnected when the temperature rises and connected when the temperature drops).

The bimetallic strip is heated and deformed to trigger the mechanism to achieve fast switching.

‌Technical Parameters‌
‌Spesifikasi Kelistrikan‌:
Tegangan terukur: AC 250V (beban resistif) or AC 125V (standar UL)
Nilai saat ini: 5A/10A/15A (beban resistif)
‌Temperature performance‌:
Action range: 0℃~300℃ (customizable), accuracy ±2℃~±10℃17
Reset and action temperature difference: 8℃~100℃ (adjustable)
‌Mechanical characteristics‌:
Resistensi kontak: ≤50mΩ, insulation resistance: ≥100MΩ13
Electrical strength: AC 1800V/1min without breakdown
Service life: ≥100,000 times17 (some models up to 150,000 times2)

‌Physical characteristics‌
Protection level: IP00 (no dust and water resistance)
Wiring method: plug-in terminal 250# atau 187# (angle 0°~90° optional)
Installation method: supports various structures such as movable ring, flat ring, aluminum cover with holes, dll..

Normally Open State:
The KSD301 is designed to have its contacts in an open state when the surrounding temperature is below the specified operating temperature. This means the circuit connected to the KSD301 is broken, preventing current flow.

Temperature Trigger:
As the temperature increases, the bimetallic disc (made of two different metals bonded together) responds to the temperature change. The two metals expand at different rates, causing the disc to bend.

Circuit Closure:
When the temperature reaches the set point, the disc bends enough to close the circuit, establishing a connection between the contacts. This allows current to flow through the circuit.

Reset Otomatis:
Once the temperature drops below a certain level, the bimetallic disc returns to its original shape, opening the circuit again and cutting off the current flow. This is an automatic reset feature.
Intinya, the KSD301 is used as a thermal switch to control current flow based on temperature, acting as a temperature sensor and protector for various applications.

II. Skenario Aplikasi
peralatan Rumah Tangga: dispenser air, termos listrik, oven gelombang mikro, lemari desinfeksi, pemanas listrik, mesin kopi, dll..
‌Peralatan industri‌: Perlindungan motor terlalu panas, rectifier equipment, laminating machines, car heated seats, etc.57.

AKU AKU AKU. Metode deteksi (determine whether it is normally open)
‌Multimeter detection‌:
Pada suhu kamar (‌below the action temperature‌): the resistance of the two pins should be infinite (open circuit).
After heating (‌above the action temperature‌): the resistance value drops to ‌tens of ohms‌ (open circuit).
‌Menandai perbedaan‌: The product body is usually marked with “TIDAK” (Biasanya Terbuka) atau “Biasanya Terbuka”.

IV. Product advantages
Fast response speed, clean contact action without arcing57;
High temperature control accuracy, strong reliability7;
Compact structure, strong adaptability17.

⚠️ Note: The actual selection needs to confirm the specific temperature threshold (such as 85℃, 95℃, dll.) and the reset temperature difference. The parameters of different models may vary.