Principle and structure
it is to use a certain geometry of bimetallic strip, without auxiliary institutions, only by bimetallic strip their own sense of mild heating current, rapid changes in the state of bimetallic element, direct drive contact automatic cutting and processing circuit, overheat protection, overload protection.
Application
It is widely applied in Electric motors and electrical equipment as electric blanket, hot wall, washer motor, soybean milk machine motor, Fan motor, air condition motor, fractional motor, direct current motor, AC brushless motor, water pump, transformer, rectifier, lighting, rechargeable battery,electric heating appliance etc.
Specification
1. Contact’s type: Normally closed and Normally open
2. Electrical rating: 10A/AC120V; 8A/AC250V; 10A/AC250V; 16A/AC250V
3. Circuit resistance: ≤50mΩ (Initial value)
4. Insulation resistance: ≥100mΩ
5. Action temperature range: 40~150℃
6. Case: metal case and plastic case
7. Life: ≥10,000 times
8. Size:
|
Model |
L(mm) |
W(mm) |
H(mm) |
Electrical rating |
Lead wire (mm) |
|
metal |
20 |
7.5 |
3.8 |
5A/250V;10A/250V |
AWG#22,AWG#18 high temperature silicone wire L1=L2=70mm, or according to customer’s requirement. |
|
20 |
8.0 |
4.1 |
16A/250V |
|
plastic |
20 |
8.0 |
4.0 |
5A/250V;10A/250V |
9. Open temperature and reset temperature sheet
|
Code |
Open temp. |
Reset temp. |
Code |
Open temp. |
Reset temp. |
|
40 |
40℃25℃ |
≥30℃ |
100 |
100℃25℃ |
80310℃ |
|
45 |
45℃25℃ |
≥30℃ |
105 |
105℃25℃ |
70312℃ |
|
50 |
50℃25℃ |
≥30℃ |
110 |
110℃25℃ |
75312℃ |
|
55 |
55℃25℃ |
≥30℃ |
115 |
115℃25℃ |
80312℃ |
|
60 |
60℃25℃ |
40310℃ |
120 |
120℃25℃ |
85312℃ |
|
65 |
65℃25℃ |
45310℃ |
125 |
125℃25℃ |
90312℃ |
|
70 |
70℃25℃ |
50310℃ |
130 |
130℃25℃ |
95312℃ |
|
75 |
75℃25℃ |
55310℃ |
135 |
135℃25℃ |
100312℃ |
|
80 |
80℃25℃ |
60310℃ |
140 |
140℃25℃ |
105312℃ |
|
85 |
85℃25℃ |
65310℃ |
145 |
145℃25℃ |
110312℃ |
|
90 |
90℃25℃ |
70310℃ |
150 |
150℃25℃ |
115312℃ |
|
95 |
95℃25℃ |
75310℃ |
|
|
|
ksd9700 Thermal protector’s competitive advantage
1. Small size and easy installation
2. Quick bimetallic strip, fast reaction
3. The life time high than 10,000 times
4. Prevention again leak of vacuum impregnation process
5. Replacer of SENSATA 17AM 7AM, SEKI ST-22 etc.
BW series’drawing
1.Lead wire 2.Epoxy resin 3.Ceramic block 4.Movable contact 5.Movable piece 6.Case 7.Unmovable piece 8.Base 9. bimetal
Normally closed condition
Normally open condition
