KW3A-25TSW0B-A200B-B High Current 25A Snap Action Switch
Series:KW3A series
Type:KW3A-25TSW0B-A200B-B
Construction category:D type
Operation method:Snap Action
Configuration:Single-Pole Single-Throw (SPST)
Terminal form: #250 quick-connect Terminal
Mounting:via side mounting holes
Protection:IP40
- Applications
- Technical parameters
- Remarks
-
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
CNC machine tools
Power generator
Test equipment
Power tools
Water heater control panel
Bathroom products
Vacuum cleaner
Kitchen products
Gas valve
Microwave oven
3. DETAIL SPECIFICATIONS
Type:KW3A-25TSW0B-A200B-B
Construction category:D type
Operation method:Snap Action
Configuration:Single-Pole Single-Throw (SPST)
Terminal form: #250 quick-connect Terminal
Mounting:via side mounting holes
Protection:IP40
3.1OPERATING CHARACTERISTICSCharacteristics
Units
Standards
Note
Actuating Force
N
2.0 Max
Original 2.0 Max.
Release Force
mm
0.2 Min
Original 0.2 Min.
Differential Travel
mm
0.5 Max
Original 0.5 Max.
Operating Position
mm
15.3 ± 0.4
Original 15.3 ± 0.4
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 -25℃ ～ +85℃
3.2.3 Test conditions: Unless otherwise specified. The atmospheric conditions for making measurements and tests are as follows
Ambient temperature
Relative humidity
Air pressure Should any doubt arise in judgment. tests shall be conducted at the following conditions.
Ambient temperature 60~70%
Relative humidity: 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 specificationsNO.
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: 1)Between terminal and terminal
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 -25±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 85±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
Trial measure
temperature（℃）
Time（s）
Slot welding method
260±5
5±1
Soldering method
350±5
3±0.5
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)
1hp 125VAC
Switch shall be operated according to following sequence
(Test1~Test2)
Voltage
Current
Power
factor
Operation
rate
Number
of operation
Test1
125V
30A
0.75-0.8
6-10
cycles/min
50cycles
Test2
125V
25A
0.75-0.8
6-10
cycles/min
50000
cycles
Voltage proof(Cut-off current:0.5mA)
Test voltages shall be applied for 1 min
25GPA 125/250VAC
Switch shall be operated 50,000 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；
50000cycles,
Temperature
rise：55℃ MAX；
No abnormalities
shall be recognized
in appearance and
construction
3.7.2
Endurance
(According to
EN61058-1
/IEC61058-1)
25(10)A 250VAC
Switch shall be operated 50,000 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：
PACKING:
6.1
Packing material:
Plastic box /
Double-layers paper carton6.2
Packing number:
125 pieces per box
5 box per inner carton
4 inner cartons per shipping carton
Each shipping carton 2500 pieces6.3
Weight:
Gross Weight: 21kg
Net Weight: 18kg
6.4
Size:
46.0 x 33.0 x 29.5 CM / 0.045CBM
SAFETY APPROVAL & RATING:
Approved Rating
Mark
Reference No.
25RA125/250VAC 25(10)A125/250VAC
1hp125VAC,2hp250VAC 2E4 40T85 50-60Hz
UL&CUL
E176213
VDE
25(10)A 250VAC 2E4 25T85
CQC
CQC10002040815
NEMKO
SEMKO
FIMKO
25(10)A 125/250VAC 2E4 40T85 50-60Hz
DEMKO
D-01525
25(4)A 250VAC 1E4 T85
CE
AN 50335747
25(4)A 250VAC 1E4 T85
TUV
R50131050
25(10)A 125/250VAC 2E4 40T85 50-60Hz
ENEC
ENEC-00324
25(10)A 125/250VAC 2E4 40T85 50-60Hz
CB
DK-27284-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 PBT (black)
4
1
Moving piece
Copper,Silver plated T2
5
1
Support
The brass strip H65, silver plated
6
2
Static contact
AgCdO12
7
1
Terminal
Copper,Silver plated T2
9
1
Move contact
AgCdO12
10
1
Spring sheet
Beryllium bronze QBe2
11
1
Cover
Engineering plastic PBT(black)
Note: Returned plastic should not exceed 20%.
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