Consultation：Cherry Lee Add：Shangchegang Industrial,Hengli Twon, Dongguan City,Guangdong Province, China
BW-A1D metal case Temperature protector
(1)采用接触感温式安装时，应使产品贴紧被控器具的安装面。
(2)安装时不可把塑胶或金属外壳压塌或使其变形，以免影响性能。
(3)金属外壳产品有加绝缘外套的在安装中不可把外加绝缘套去掉不用或压破，避免造成漏电，确保使用安全。
(4)产品在不大于5A电流的电路中使用，应选择铜芯截面为0.4-0.75㎜2导线与之连接。
(5)产品应在相对湿度小于90%，环境温度40℃以下通风、洁净、干燥、无腐蚀性气体的场所中存放。
1. H20,H21 series thermostat’s Principle and structure
H20,H21serial universal and enhanced protectors with large metal casing are composed of the thermal conductive metal casing, bimetallic parts welded with silver alloy contact point, conductive bracket, insulation fixation stand, fixed contact strip and heat resistance cable. In case of abnormal operation, along with the increase of the environment temperature to the set value, the bimetallic parts perform quick action, open the contact point, and disconnect the circuit. When the device is cooled to the temperature for safe operation, the contact point will automatically closes and recover normal operation.
2. H20,H21series thermal protector’s Specification
2.1. Switch type: normally closed, normally opened.
2.2. Operating Voltage / Current: AC250V / 5A; AC125V / 8A
2.3. Operating Temperature: 40~150℃ (one step for every 5°C)
2.4. Standard Tolerance: ±3°C / ±5°C / ±7°C
2.5. Reset temperature: operating temperature decrease by 15-45°C
2.6. Contact Closure resistance: ≤50mΩ
2.7. Insulation resistance: ≥100mΩ
2.8. Electric strength: AC1500V/1min free from phenomena of break down and flashover.
2.9. Service life: 10000 times
3. H20,H21series thermal protector’s Dimension
| Model | Case | Length | width | High | Lead wire |
| H20 | Plastic | 18.5 | 8 | 4 | #22 3266 white, or according client’ reques |
| H21 | Metal | 18.5 | 7.3 | 3.8 | #20 3135 red, or according client’ request |
4. H20,H21series temperature protector’s Application
H20,H21series is applicable to chargeable battery, ballast, massager, micro motor, transformer, electric tools, heat electric appliance and instrument etc.
BW-A1D temperature protector open temperature and reset temperature sheet
|
Code |
open temp |
reset temp. |
code |
open temp, |
reset temp. |
|
50 |
50+-5℃ |
≥30℃ |
110 |
110+-5℃ |
75+-12℃ |
|
55 |
55+-5℃ |
≥30℃ |
115 |
115+-5℃ |
80+-12℃ |
|
60 |
60+-5℃ |
40±10℃ |
120 |
120+-5℃ |
85+-12℃ |
|
65 |
65+-5℃ |
45±10℃ |
125 |
125+-5℃ |
90+-12℃ |
|
70 |
70+-5℃ |
50±10℃ |
130 |
130+-5℃ |
95+-12℃ |
|
75 |
75+-5℃ |
55±10℃ |
135 |
135+-5℃ |
100+-12℃ |
|
80 |
80+-5℃ |
60±10℃ |
140 |
140+-5℃ |
105+-12℃ |
|
85 |
85+-5℃ |
65±10℃ |
145 |
145+-5℃ |
110+-12℃ |
|
90 |
90+-5℃ |
70±10℃ |
150 |
150+-5℃ |
115+-12℃ |
|
95 |
95+-5℃ |
75±10℃ |
155 |
155+-5℃ |
120+-12℃ |
|
100 |
100+-5℃ |
80±10℃ |
160 |
160+-5℃ |
125+-12℃ |
|
105 |
105+-5℃ |
70+-12℃ |
or according to client's request | ||
The product with CQC TUV UL CUL and ROHS certificate
