TO-220 PCB-Bimetal Disc Liten termisk beskyttelsestermostat

A TO-220 PCB-Thermal protection Thermostat is a method that detects high temperatures and disconnects power to electronic circuits to prevent damage or fires. A TO-220 PCB- Thermal protectors Thermostat are often used in motors to prevent overheating and fires by turning off the electricity when the motor’s heat rises too high. Thermal protectors are usually placed inside the motor.
A TO-220 PCB-bimetal disc thermostat is a thermally actuated switch that uses a bimetallic disc to sense temperature and open or close an electrical circuit. When the disc is exposed to a predetermined temperature, it snaps and either breaks or completes the circuit. Here are some examples of TO-220 PCB-bimetal disc thermostats:
JUC 31F / ST01 B U8 Series TO-220 PCB-Bimetal Disc Termostat: En hurtigvirkende SPST bimetalltermostat som oppfyller RoHs standarder.
JUC 31F / ST01 B U8, 6700 Serie TO-220 subminiatyr termostat: En subminiatyr bimetallskivetermostat med en kontaktmotstand på 50 milliohm maks. Den har en bryterkapasitet på opptil 2 forsterker for 48 VDC eller 120 VAC for 30,000 sykluser.
JUC 31F / ST01 B U8, 802 Series PCB Thermostat: A miniature bimetal thermostat that conforms to the international Y220/TO220 package.

JUC-31F termisk beskyttelsesbryter ,UL, CUL, CQC, TUV, CB TO220 Temperaturbryter

Bi-Metallic Thermostat, Opens +100°C, Close +60°C, +150°C Max, NC, Automatisk tilbakestilling, PCB

6700 Serie TO-220 subminiatyr termostat

PCB-Bimetal Thermostat Connection structure
The static contact and ceramic cover are riveted; The moving contact is welded to the reed, som er i form av et kors, and its four legs are connected to the bottom of the shell; The inner hole of the bimetallic strip passes through the moving contact and is placed on the reed. The current passes through the static contact to the moving contact, and then connects to the shell through the reed to form a loop.

ST01 B U8 PCB-Bimetal Thermostat Working principle
When the circuit is in normal state, the moving contact is in close contact with the static contact under the pre-pressure of the reed. Når temperaturen når driftstemperaturen, the bimetallic strip is deformed by heat and quickly flips, pressing the reed to move downward, causing the contacts to separate and cut off the circuit. After the circuit is cut off, the temperature begins to drop. Når temperaturen synker til den tilbakestilte temperaturen, the bimetallic strip returns to its initial state, and the reed also rebounds to its initial state. The moving contact and the stationary contact re-contact, and the circuit returns to the normal conduction state.

PRODUCT PARAMETER
Nominell koblingstemperatur (NST) i 5°C : 60 ° C. – 180 ° C.
Toleranse (standard) : ±5K
Omvendt brytertemperatur (RST) toleranse :
≥ 35 ° C. (≤ 80°C NST)
-30K±15K (≥ 85°C ≤ 180° C NST)
Tykkelse : 5.6mm
Diameter : 9.8mm
Length of the insulation cap : 18.3mm
Motstand mot impregnering : passende
Egnet for montering i beskyttelsesklasse : I+ll
Trykkmotstand til bryterhuset : 300N
Standard tilkobling : 0.33 mm² / AWG22
Isolasjonsspenning : 1.5 kV
Driftsspenningsområde AC/DC : frem til 500 V og / 14 I DC
Nominell spenning AC : 250 V(VDE), 277 V(UL)
Merkestrøm AC cos ϕ = 1.0 /sykluser :2.5EN / 10,000
Maks. koblingsstrøm AC cos ϕ = 1.0 /sykluser : 6.3 EN / 3,000/ 7.5 EN / 300
Merkestrøm AC cos ϕ = 0.6 /sykluser : 1.6 EN / 10,000
Nominell spenning DC : 12.0 V
Maks. byttestrøm DC / sykluser : 40.0 EN / 5,000
Total spretttid : < 1 ms
Kontaktmotstand : ≤ 50 mΩ
Vibrasjonsmotstand kl 10 … 60 Hz :100 m/s²
Tilgjengelige godkjenninger : UL/TUV/CQC/CB