Series:KW3A series
Type:KW3AT-21ZSW3-A300
Construction category:D type
Operation method:Snap Action
Configuration:Single-Pole Double-Through (SPDT)
Terminal form:#250 Quick-connect Terminal
Mounting:via side mounting holes
Protection:IP40
SAFETY APPROVAL & RATING:
Approved Rating |
Mark |
Reference No. |
21A125VAC T125 21GPA 125/250VAC 21(4)A 125/250VAC 12A 30VDC |
UL&CUL |
E176213 |
21(4)A250VAC 1E4 T125 |
VDE |
40022705 |
21(4)A250VAC 1E4 T125 |
CQC |
CQC04002011514 |
|
NEMKO |
|
21(4)A250VAC 1E4 T125 |
SEMKO |
1021704 |
|
FIMKO |
26298 |
21(4)A 125/250VAC 12A 30VDC 1E4 40T125 50-60Hz |
DEMKO |
315484-01 D-01523 |
21(4)A250VAC 1E4 T125 |
CE |
SH10050182-V2 |
|
TUV |
|
21(4)A 125/250VAC 12A 30VDC 1E4 40T125 50-60Hz |
ENEC |
ENEC-00323 |
21(4)A250VAC 1E4 T125 |
EK |
SU02030-6007A SU02030-6007B |
21(4)A 125/250VAC 12A 30VDC 1E4 40T125 50-60Hz |
CB |
DK-27280-UL |
PARTS LIST
NO. |
Quantity |
Item |
Material |
1 |
1 |
Plunger |
Bakelite PF2A5-151(j)b red |
2 |
1 |
Lever |
H62,silver plated |
3 |
1 |
Case |
Engineering plastic PBT4308 (grey) (UL94V-0) |
4 |
1 |
Moving piece |
The brass strip H62, silver plated |
5 |
1 |
Support |
The brass strip H65, silver plated |
6 |
2 |
Static contact |
AgNi10/Cu |
7 |
1 |
Terminal |
The brass strip H65, silver plated |
8 |
1 |
Terminal |
The brass strip H65, silver plated |
9 |
1 |
Move contact |
AgNi10/Cu |
10 |
1 |
Spring sheet |
Beryllium bronze QBe2 |
11 |
1 |
Cover |
Engineering plastic PBT4308(grey)(UL94V-0) |
Note: Returned plastic should not exceed 20%.
Widely used in home appliance, electronic equipment, automatic machine, communication equipment, car electron, apparatus and instrument, electric motion tool etc.
Rice cooker
Slow cooker
Electric Heating Faucet
Shredder
Computer mouse
Power generator
Test equipment
Elevator
Power tools
Air conditioner
Water heater control panel
Bathroom products
Vacuum cleaner
Kitchen products
Gas valve
3.DETAIL SPECIFICATIONS
Type:KW3AT-21ZSW3-A300
Construction category:D type
Operation method:Snap Action
Configuration:Single-Pole Double-Through (SPDT)
Terminal form:#250 Quick-connect Terminal
Mounting:via side mounting holes
Protection:IP40
3.1 OPERATING CHARACTERISTICS
Characteristics |
Units |
Standards |
Note |
Actuating Force |
N |
0.3 Max |
Original 0.3 Max. |
Movement differential travel |
mm |
1.0 Max |
Original 1.0 Max. |
Operating Position |
mm |
16.3 ± 1.2 |
Original 16.3 ± 1.2 |
Note:
Actuating Force
The force required to move the actuator from the free to the operation position
Release Force
The force allowed the mechanism to reset actuator after operation
Free Position
The position of the actuator when no external force is applied
Operating Position
The position of the actuator when contact change-over take place
Movement Differential
The distance between operation and release position
3.2 General
3.2.1 Application This specification is applied to KW3A Micro Switch used for electronic equipment.
3.2.2 Operating temperature range -40℃ to +125℃
3.2.3 Test conditions
Unless otherwise specified. The atmospheric conditions for making measurements and tests are as follows.
Ambient temperature: 15~35℃
Relative humidity: 45~85%
Air pressure: 86~106kPa (860~1060 mbar)
Should any doubt arise in judgment. tests shall be conducted at the following conditions.
Ambient temperature: 20±2℃
Relative humidity: 60~70%
Air pressure: 86~106kPa (860~1060 mbar)
3.3 Appearance construction and dimensions
3.3.1 Appearance Switch shall have good finishing, and no rust crack or plating failures.
3.3.2 Construction and dimensions Refer to individual product drawing.
3.4. Electrical specifications
NO. |
Items |
Test conditions |
Criteria |
3.4.1 |
Contact resistance |
Shall be measured at 1A,5V DC by voltage drop method after some operations without load. Applied position: Between terminal and terminal |
50mΩ MAX |
3.4.2 |
Insulation resistance |
Test voltage:500VDC, measured after 1 min ±5s Applied position: 2)Between terminal and ground |
100MΩ MIN |
3.4.3 |
Voltage proof |
Following test voltages shall be applied for 1 min. (Cut-off current:0.5mA) 1)Between terminal and terminal :1000VAC (50~60Hz) 2)Between terminal and ground: 3750V AC(50~60Hz) |
No dielectric breakdown shall occur |
3.5. Durability
NO. |
Item |
Test conditions |
Criteria |
3.5.1 |
Cold |
After testing at -40±2℃ for 96 h, the switch shall be allowed to stand under normal room temperature and humidity condition for 1h, and then measurement shall be made within 1 h. water drops shall be removed. |
Contact resistance(item 4.1): 100mΩ MAX Insulation resistance (item 4.2): 50MΩ MIN Voltage proof: (item 4.3) No dielectric breakdown shall occur. Operating characteristic (item 5.1): Operating characteristic variety Within ±10% of specified value . No abnormalities shall be recognized in appearance and construction. |
3.5.2 |
Dry heat |
After testing at 135±2℃ for 96 h, the switch shall be allowed to stand under normal room temperature and humidity condition for 1h, and then measurement shall be made within 1 h. |
|
3.5.3 |
Damp heat |
After testing at 40±2℃ and 90-95%RH for 96 h, the switch shall be allowed to stand under normal room temperature and humidity condition for 1h, and then measurement shall be made within 1 h. water drops shall be removed. |
|
3.5.4 |
Change of temperature |
After 5 cycles of following conditions the switch shall be allowed to stand under normal room temperature and humidity condition for 1h, and then measurement shall be made within 1 h. water drops shall be removed. |
|
3.5.5 |
Salt mist |
Switch shall be checked after following lest. 1) Temperature: 35±2℃ 2) Salt solution: 5±1% (solids by mass) 3) Duration: 24±1h After test, salt deposit shall be removed in running water |
No remarkable corrosion shall be recognized in metal part |
3.6. WELDING PERFORMANCE
3.6.1 |
Solder ability |
Switch test under such conditions and inspect after. 1)Variable temperature range :235±5℃; 2)Dip time:3±0.5s; |
The area of dip tin should capture the 95% impregnated area |
|||||||||
3.6.2 |
Resistance to soldering heat |
The switch will be inspect under such conditions below Temperature and impregnated time
|
All of the appearance, motor functions, electrical properties are no abnormal. |
3.7. Durability
NO. |
Items |
Test conditions |
Criteria |
3.7.1 |
Endurance (According to UL61058) |
21GPA 125/250VAC; 12A 30VDC
Voltage proof(Cut-off current:0.5mA) Test voltages shall be applied for 1 min Switch shall be operated 10,000 cycles at 15-20 cycles/min.
|
Insulation resistance (item 4.2): 50MΩ MIN; Voltage proof: Terminal and ground:1000VAC No dielectric breakdown shall occur. Operating characteristic (item 5.1): Within ±20% of specified value. 6000cycles, Temperature rise:30℃ MAX; 10000cycles, Temperature rise:55℃ MAX; No abnormalities shall be recognized in appearance and construction |
3.7.2 |
Endurance (According to EN61058-1 /IEC61058-1) |
21(4)A 125/250VAC 12A 30VDC Switch shall be operated 10,000 cycles at 15-20 cycles/min. Voltage proof(Cut-off current:0.5mA) Test voltages shall be applied for 1 min |
Insulation resistance (item 4.2): 50MΩ MIN Voltage proof: Terminal and terminal:750VAC Terminal and ground:1500VAC No dielectric breakdown shall occur. Operating characteristic (item 5.1): Operating characteristic variety Within ±20% of specified value . Temperature rise:55℃ MAX No abnormalities shall be recognized in appearance and construction |
4. DRAWING & DIMENSION
5. CIRCUIT DIAGRAM
6. PACKING:
6.1 |
Packing material: |
Plastic box / |
6.2 |
Packing number: |
125 pieces per box |
6.3 |
Weight: |
Gross Weight: 21kg Net Weight: 18kg |
6.4 |
Size: |
46.0 x 33.0 x 29.5 CM / 0.045CBM |
Copyright 2019 By Switech Electronics Co.,Ltd