TO-220 قرص PCB-Bimetal الحماية الحرارية الصغيرة ترموستات

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: حركة مرحلة SPST SPST Bimetallic Thermostat تلبي معايير ROHS.
JUC 31F / ST01 B U8, 6700 سلسلة ترموستات فرعية إلى 220: ترموستات قرص ثنائي المعبقة تحت الطبقات مع مقاومة ملامسة من 50 Milliohms Max. لديها قدرة التبديل على ما يصل إلى 2 أمبير ل 48 VDC أو 120 VAC ل 30,000 دورات.
JUC 31F / ST01 B U8, 802 Series PCB Thermostat: A miniature bimetal thermostat that conforms to the international Y220/TO220 package.

مفتاح الحامي الحراري JUC-31F ,أول, كول, CQC, توفالو, مفتاح درجة حرارة CB TO220

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

6700 سلسلة ترموستات فرعية إلى 220

PCB-Bimetal Thermostat Connection structure
The static contact and ceramic cover are riveted; The moving contact is welded to the reed, which is in the shape of a cross, 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. When the temperature reaches the operating temperature, 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. عندما تنخفض درجة الحرارة إلى درجة حرارة إعادة تعيين, 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
Nominal switching temperature (NST) in 5°C : 60 درجة مئوية – 180 درجة مئوية
Tolerance (standard) : ±5K
Reverse switch temperature (RST) tolerance :
≥ 35 درجة مئوية (≤ 80°C NST)
-30K±15K (≥ 85°C ≤ 180° C NST)
Thickness : 5.6مم
Diameter : 9.8مم
Length of the insulation cap : 18.3مم
Resistance to impregnation : suitable
Suitable for installation in protection class : I+ll
Pressure resistance to the switch housing : 300N
Standard connection : 0.33 mm² / AWG22
Insulation voltage : 1.5 kV
Operating voltage range AC/DC : up until 500 الخامس و / 14 في العاصمة
Rated voltage AC : 250 V(VDE), 277 V(أول)
Rated current AC cos ϕ = 1.0 /دورات :2.5أ / 10,000
Max. switching current AC cos ϕ = 1.0 /دورات : 6.3 أ / 3,000/ 7.5 أ / 300
Rated current AC cos ϕ = 0.6 /دورات : 1.6 أ / 10,000
Rated voltage DC : 12.0 V
Max. switching current DC /cycles : 40.0 أ / 5,000
Total bounce time : < 1 آنسة
مقاومة الاتصال : ≤ 50 MΩ
Vibration resistance at 10 … 60 هرتز :100 m/s²
Available approvals : UL/TUV/CQC/CB