BK05 Normally Closed 16A 170 Deg C Automatic Reset Bi-metal Thermal
Protector For Overload Protecting
Quick Detail:
| Model | BK05-BB1D-B170 |
| Reset Type | Auto Reset |
| Single Pole,Single Throw(SPST) |
| Case Material: | Metal |
| Rated Voltage & Current | 250V AC 8A 10A 16A |
| Contact Type | Normally Closed(Open on Rise) or Normally Open(Close on Rise) |
| Operating Temperature Range | 45～150℃ |
| Temperature tolerance | ±5.0℃ |
| Contact Resistance | ≤50mΩ |
| Insulation Resistance | ≥100MΩ |
| Dielectric Strength | ≥1500V |
| Life Cycle | 10,000 Cycles |
| Certificate | CQC,TUV,UL,VDE,ROHS,REACH |
| Action temperature error | ±3℃/5℃ |
| Reset temperature error | ±15℃ |
Description:
BK05-BB1D series THERMAL PROTECTOR is a precise protector with small size. It is sensitive, accurate
and reliable, especially suitable for heat cable, battery
protection board, micro-motor and security protection of
transformer. BK05-BB1D series THERMAL PROTECTOR is using a special shape of double metal piece without auxiliary
mechanism. The status of metal piece has the fast change is only
depended on the self temperature sensing of the metal piece and the
current thermal reaction. It makes the contact realize the cut off
the power automatically and get through the power. The over heating
protection and overload protection will be raised.
Work Principle:
BK05 type bimetal thermal protector is using the double metal piece
as e temperature sensing element. When the electrics work normally,
the double piece is at the free status, the contact is at
close/break off position. When the temperature rises to the action
temperature, the double metal piece acts fast by the inside force
caused by heating, open/close the contact, cut off/get through the
power, the temperature protection function is raised. When the
temperature lows to the reset temperature, the contact
closes/breaks off automatically and recovery to normal work status.
Applications:
Battery pack, Li battery protect board
Electrical tools
PC board, temperature sensitive cable
Heating-pads, electrical blankets
Fluorescent ballasts and lightings, transformers
Competitive Advantages:
Small size, Installation is more flexible and convenient;
Have the stable work characteristics and excellent reliability;
Sensitive temperature and snap action;
Nickel and wires are optional;
Each type of parts strictly implemented European ROHS environmental
standards;
Terminals are optional with normally closed Model B and normally
open Model K
Specifications:
1. Dimensional Outline
2. Structural Drawing
| Plastic Case Type | Metal Case Type |
1. Lead wire
2. Epoxy Resin 3. Stationary Contact Plate
4. Movable Contact 5. Movable Spring Plate
6. Bimetallic Strip 7. Plastic Case 8. Insulation Block 9. Baseplate | 
1. Lead 2.Epoxy Resin 3. Stationary Contact Plate 4. Movable Contact 5. Movable Spring Plate 6. Bimetallic Strip 7. Metal Case 8. Insulation Block 9. Baseplate 10. Insulating Tube |
|
 |
3. Action Temperature Table
| KSD9700 |
|
| Action Temperature | Reset Temperature | Action Temperature | Reset Temperature |
| 40±5℃ | ≥27℃ | 110±5℃ | 73±15℃ |
| 45±5℃ | ≥27℃ | 110±5℃ | 73±15℃ |
| 50±5℃ | ≥30℃ | 115±5℃ | 76±15℃ |
| 55±5℃ | ≥30℃ | 120±5℃ | 80±15℃ |
| 60±5℃ | 40±15℃ | 125±5℃ | 83±15℃ |
| 65±5℃ | 43±15℃ | 130±5℃ | 86±15℃ |
| 70±5℃ | 46±15℃ | 135±5℃ | 90±15℃ |
| 75±5℃ | 50±15℃ | 140±5℃ | 93±15℃ |
| 80±5℃ | 53±15℃ | 145±5℃ | 96±15℃ |
| 85±5℃ | 56±15℃ | 150±5℃ | 100±15℃ |
| 90±5℃ | 60±15℃ | | |
| 95±5℃ | 63±15℃ | | |
| 100±5℃ | 67±15℃ | | |
| 105±5℃ | 70±15℃ | | |
| Remark : |
| Reset Temperature: 2/3 of Action Temperature, tolerance is±15℃ or
customized. |
Tag:
Thermal Protection Switch, Bimetal Thermal Protector, Temperature
Switch
