Remarks

Applications

Widely used in home appliance, electronic equipment, automatic machine, communication equipment, car electron, apparatus and instrument, electric motion tool etc.

Shredder
Computer mouse
Electromagnetic lock
Baby chair
CNC machine tools

Bathroom products
Vacuum cleaner
Kitchen products
Gas valve
Range hood machine
Microwave oven
Pass-through machine

Technical parameters

Technical parameters

1. DETAIL SPECIFICATIONS

Type: KW3A-1ZSW0B-E075A-08

Construction category: D type
Operation method: Snap Action
Configuration: Single-Pole Double-Throw (SPDT)
Terminal form: Screw Terminal

Mounting: via side mounting holes

Protection: IP40

2.1 OPERATING CHARACTERISTICS

Characteristics	Units	Standards	Note
Actuating Force	N	0.75 Max	Original 0.75 Max
Over travel	mm	1.0 Max	Original 1.0 Max
Movement differential travel	mm	0.4 Max	Original 0.4 Max
Operating Position	mm	14.9 ± 0.4	Original 14.9± 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

2.2 General

2.2.1 Application This specification is applied to KW4A(S)Micro Switch used for electronic equipment.

2.2.2 Operating Temperature Range: -40℃ ～ +105℃

2.2.3 Test Conditions Unless otherwise specified. The atmosphericconditions 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. It shall be conducted at the following conditions.

Ambient temperature: 20±2℃

Relative humidity: 60~70%

Air pressure: 86~106kPa (860~1060 mbar)

2.3 Appearance construction and dimensions

2.3.1 Appearance Switch shall have good finishing, and no rust crack or plating failures.

2.3.2 Construction and dimensions Refer to individual product drawing.

2.4 Electrical specifications

NO.	Items	Test Condition	Criteria
2.4.1	Contact Resistance	Shall be measured at 1A,5V DC by voltage drop method after some operations without load. Applied position: Between terminal “C” and terminal “NO”.	50mΩ MAX
2.4.2	Insulation resistance	Test voltage:500VDC, measured after 1 min ±5s Applied position: 1)Between terminal “C” and terminal “NO” 2)Between terminal and ground	100MΩ MIN
2.4.3	Voltage proof	Following test voltages shall be applied for 1 min. (Cut-off current:0.5mA) 1)Between terminal “C” and terminal “NO”:1000VAC (50~60Hz) 2)Between terminal and ground: 3750V AC(50~60Hz)	Nodielectric break down shall occur

2.5 Durability

No.	Item	Test Condition	Criteria
2.5.1	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) Nodielectric break down shall occur. Operating characteristic (item 5.1): Within specified value . No abnormalities shall be recognized in appearance and construction.
2.5.2	Dry heat	After testing at 105±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.
2.5.3	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.
2.5.4	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.
2.5.5	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

2.6 Welding Performance

2.6.1

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

2.6.2

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.

2.7 Durability

NO.

Item

Test condition

Criteria

2.7.1

Endurance

(According to

UL1054)

1A 125VAC

Switch shall be operated according to following sequence

(Test1~Test2)

Voltage

Current

Power
factor

Operation
rate

Number of
operation

Test1

125V

1.5A

0.75-0.8

6-10

cycles/min

50cycles

Test2

125V

1A

0.75-0.8

6-10

cycles/min

6000cycles

1GPA 125/250VAC

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 ground:1000VAC

No dielectric breakdown
shall occur.

Operating characteristic
(item 5.1):

Operating characteristic variety

Within ±20% of specified value .

Temperature rise:30℃ MAX

No abnormalities shall be
recognized in appearance
and construction

2.7.2

Endurance

(According to
EN61058-1

/IEC61058-1)

1（0.3）A 125/250VAC

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:1125VAC

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

3. DRAWING & DIMENSION

4. CIRCUIT DIAGRAM

5. PACKING

5.1	Packing material:	Plastic box / Double-layers paper carton
5.2	Packing number:	100 pieces per box； 25 boxes per inner carton； 4 inner cartons per shipping cartons
5.3	Weight:	Gross Weight: 24kg Net Weight: 21kg
5.4	Size:	500 x 530 x 240mm

Contact Us

Approved Rating	Mark	Reference No.
1A125VAC T105 1GPA 125/250VAC 1(0.3)A 125/250VAC 5E4 40T105 50-60Hz	UL&CUL	E176213
1(0.3)A250VAC 5E4 10T105	VDE	40022705
1(0.3)A250VAC 5E4 10T105	CQC	CQC04002011514
1(0.3)A250VAC 5E4 10T105 IP00	NEMKO	P10213184
1(0.3)A250VAC 5E4 10T105 IP00	SEMKO	1021704
1(0.3)A250VAC 5E4 10T105	FIMKO	26298
1(0.3)A250VAC 5E4 10T105 IP00 1(0.3)A 125/250VAC 5E4 40T105 50-60Hz	DEMKO	315484-01 D-01523
1(0.3)A250VAC 5E4 10T105 IP00	CE	SH10050182-V2
	TUV
1(0.3)A 125/250VAC 5E4 40T105 50-60Hz	ENEC	ENEC-00323
1(0.3)A250VAC 5E4 10T105	EK	SU02030-6005A
1(0.3)A 125/250VAC 5E4 40T105 50-60Hz	CB	DK-27280-UL

NO.	quantity	Items	Material
1	1	Plunger	Bakelite PF2A5-151(J)b Red
2	1	Lever	Brass alloy H62,Silver plated
3	1	Case	Plastic PBT4608（Gray）
4	1	Plate moving	Brass alloy H62,Silver plated
5	1	Terminal	Brass Alloy H65,Silver Plated
6	1	Static Contact	AgNi10/Cu, Gold plated
7	1	Terminal	Brass Alloy H65,Silver Plated
8	1	Terminal	Brass Alloy H65,Silver Plated
9	1	Move Contact	AgNi10/Cu, Gold plated
10	1	Spring	Beryllium alloy QBe2
11	1	Cover	Plastic PBT4608（Gray）

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