MINIATURE
K Series
Features
Choice of current ratings up to 25 amps
Choice of actuators
Choice of terminals
3 contact arrangements
Choice of operating force
Long mechanical life
Wiping contact action
Snap over actuators
Agency approved extended life versions
Flame retardant, UL94V-O
self-extinguishing
case and cover
Long-life snap action
switch mechanism
ARC-resistant case
has internal barriers,
4mm minimum between
live parts and external
hardware
NC terminal
NO terminal
International Approved Versions
K Series switches, except 25A (KWS), are
internationally approved. Switches with
straight terminals may require insulated
connectors for international approval.
Choice of U.S. (#4 screw)
or metric (3mm screw)
Common terminal
Single or double throw, either
normally open or normally closed
Electrical Ratings
Switch
Series
EN61058 Rating
UL1054 Rating
Electrical Life at Rated Load
According to VDE
According to UL
(Min. Operations)
(Min. Operations)
KWA/KWB
KWC/KWD
KWE/KWF
KWG/KWH
KWJ/KWK
KWL
50mA, 28VDC
1(0.5)A, 250VAC
3(1)A, 250VAC
6(2)A, 250VAC
10(3)A, 250VAC
N/A
KWM
16(4)A, 250VAC
KWS
N/A
50mA, 28VDC
1.0A, 125/250VAC
3A, 1/10HP, 125/250VAC
5A, 1/4HP, 125/250VAC
10A, 1/2HP, 125/250VAC
15.1A, 1/2HP, 125/250 VAC
5A, 125VAC Lamp Load
(85°C only)
0.5A, 125VDC
(85°C only)
0.25A, 250VDC
(85°C only)
15.1A, 1/2HP, 125/250VAC
0.5A, 125VDC
(85°C and 150°C only)
0.25A, 250VDC
(85°C and 150°C only)
15.1A, 1/2HP, 125/250VAC
(200°C only)
25A, 125/250VAC
(85°C only)
1HP, 125VAC
(85°C only)
2HP, 250VAC
(85°C only)
50,000
50,000
50,000
50,000
50,000
N/A
100,000
100,000
100,000
100,000
100,000
100,000
50,000
100,000
N/A
100,000
Specifications
Electrical
Temperature Rating:
Flammability Rating:
Materials
-40° to +85°C, 150°C or 200°C
UL94V-O
Thermoplastic Polyester (85°C or 150°C)
Liquid Crystal Polymer (200°C)
Thermoplastic Acetal (85°C)
Thermoplastic Polyester (150°C)
Liquid Crystal Polymer (200°C)
Cold-Rolled Steel (Nickel-Plated)
Brass
Copper (25 amp only)
Beryllium Copper
Silver Alloy
(except KWA and KWB — Gold-Plated)
Case/Cover:
Button:
Auxiliary Actuator:
Terminals:
Moving Blade:
Contacts:
Dimensions
inches (mm)
Actuators
Standard type snap over hinged lever
and roller actuators are available in
choice of two pivot positions. Lengths
are dimensioned from centerline of
switch upper mounting hole as shown here.
1.140
(28.96)
0.406
(10.31)
Ø 0.070 (1.78)
0.057 (1.45)
0.174* (4.42) or
0.125 (3.18)
0.047
(1.19)
Max.
Pretravel
0.109
(2.77)
0.109
(2.77)
0.797
(20.24)
0.532
(13.51)
0.320
(8.13)
0.570
(14.48)
0.119
(3.02)
0.156
(3.96)
0.250* (6.35) or
0.187 (4.75)
Auxiliary Actuator
Actuation Length
Straight
0.532
(13.51)
0.320
(8.13)
Roller
0.578
±
0.015
(14.68
±
0.38)
Oper. Pos. 0.406
±
0.005
(10.31
±
0.13)
ØA
±
0.005
(± 0.13)
0.160
(4.06)
NC
0.112 (2.85)
0.625
(15.88)
NO
COM
0.282 (7.16)
0.360
(9.14)
Ref. Line
±
0.005
A (± 0.13)
0.236
(5.99)
Simulated
Roller
Ø B
±
0.005
(± 0.13)
0.875
±
0.005
(22.23
±
0.13)
0.570
(14.48)
Metric
0.032 (0.81) or
0.020 (0.51)
Mounting Holes
U.S.
A Dim.
0.114 (2.90)
B Dim.
0.126 (3.20)
Mtg Screw
4-40 (3)
0.122 (3.10)
0.134 (3.40)
0.368
(9.35)
Notes:
SPDT switch (as shown) with 3 terminals
NO, NC, and COM. SPST switch will have
one terminal (NO or NC), and a COMMON
terminal depending on switch type.
*Applicable to 0.032 (0.8) thick by
0.250 (6.3) wide tabs only.
High Ratio
Standard Ratio
Mounting
Recommended mounting screw size:
#4-40 Round head. Recommended torque
on screw: 3 inch lbs. max.
Dog Leg Terminal
Actuator Specifications
Maximum Operating Force
(gms.)
Actuator
Type
Switch
Type
KWA,
KWC, KWE
KWG
KWD, KWJ
KWB, KWF
KWH,
KWK, KWM
KWS
Maximum
Pre-Travel
inches
(mm)
Operating
Point*
inches
(mm)
Minimum
Over-Travel
inches
(mm)
Max. Movement
Differential
inches
(mm)
Actuation
Length**
inches
(mm)
A
B
C
D
E
F
G
J
M
Q
T
25
25
14
6
15
8
4
16
9
15
8
50
50
27
12
30
15
7
31
18
29
16
75
75
40
18
44
23
10
46
26
43
24
150
150
80
36
88
45
20
92
52
85
47
225
225
120
54
132
67
30
138
77
127
71
0.056
(1.42)
0.075
(1.90)
0.146
(3.71)
0.330
(8.38)
0.133
(3.38)
0.267
(6.78)
0.593
(15.06)
0.128
(3.25)
0.232
(5.88)
0.140
(3.56)
0.253
(6.43)
0.602/0.563
(15.29/14.30)
0.631/0.585
(16.03/14.85)
0.659/0.569
(16.74/14.45)
0.725/0.527
(18.41/13.38)
0.653/0.572
(16.59/14.52)
0.702/0.541
(17.83/13.74)
0.820/0.467
(20.83/11.86)
0.776/0.698
(19.71/17.72)
0.813/0.675
(20.65/17.14)
0.872/0.786
(22.15/19.96)
0.912/0.761
(23.16/19.32)
0.050
(1.27)
0.051
(1.29)
0.085
(2.16)
0.182
(4.62)
0.074
(1.88)
0.146
(3.71)
0.407
(10.33)
0.088
(2.23)
0.115
(2.92)
0.096
(2.43)
0.173
(4.39)
0.010
(0.25)
0.012
(0.31)
0.030
(0.76)
0.051
(1.30)
0.021
(0.54)
0.041
(1.05)
0.091
(2.32)
0.020
(0.51)
0.036
(0.92)
0.022
(0.56)
0.039
(1.00)
—
—
0.865
(21.97)
1.400
(35.56)
2.722
(69.14)
1.077
(27.36)
1.612
(40.94)
2.934
(74.52)
1.254
(31.85)
1.466
(37.24)
1.340
(34.04)
1.552
(39.42)
*Measured above reference line. Refer to dimensional drawing above. **Actuator tolerance ±.0.031 inches (0.79mm).
Ordering Information
KW
Series/Prefix
Light
Standard Current
Code Force Code Force Rating Notes
A
25
B
75
50mA
1
C
25
D
75
1A
1
E
25
F
75
3A
1
G
50
H
150
5A
1
J
75
K
150
10A
1
L
150
15A
3
M
150
15A
2
S
225
25A
3, 5
A
D
Code
A
B
C
D
E
Temperature Rating
85°C UL/CUL
150°C UL/CUL
200°C UL/CUL
85°C UL/CUL/VDE*
150°C UL/CUL/VDE
Q
Code
P
4
Q
R
S
T
V
W
Terminal Type
inches (mm)
0.062 x 0.032 (1.57 x 0.81) PCB*
0.187 x 0.020 (4.75 x 0.51) Straight
0.187 x 0.020 (4.75 x 0.51) Dog Leg
0.187 x 0.032 (4.75 x 0.81) Straight
0.187 x 0.032 (4.75 x 0.81) Dog Leg
0.250 x 0.032 (6.35 x 0.81) Straight
0.250 x 0.032 (6.35 x 0.81) Dog Leg
A C A
Snap Over Actuators
Actuation Length
inches (mm)
*Only available with 15A.
Notes:
1.
C
UL
US
rated for 100,000 cycles at 85°C,
150°C, 200°C. VDE rated for 150°C only.
2.
C
UL
US
rated for 100,000 cycles at 85°C,
150°C, 200°C. VDE rated for 85°C only.
3.
C
UL
US
rated for 100,000 cycles at 85°C only.
4. Available in 10A and lower,
C
UL
US
rated
for 100,000 cycles at 85°C and 150°C.
5. Available with 0.250 x 0.032″ terminals only.
*PCB terminals are lateral to case only.
Code Mounting Holes
A
U.S.
B
Metric
Code
A
B
C
Configuration
Normally Open
Normally Closed
Double Throw
†
Code
A
B
C
D
E
F
G
J
M
Y
†
Q
W
†
T
Type
Button
Straight SR
Straight SR
Straight SR
Straight HR
Straight HR
Straight HR
SIM Roller SR
SIM Roller HR
Roller SR
Roller SR
Roller HR
Roller HR
0.865 (21.97)
1.400 (35.56)
2.722 (69.14)
1.077 (27.36)
1.612 (40.95)
2.934 (74.52)
1.254 (31.85)
1.466 (37.24)
0.810 (20.57)
1.340 (34.04)
1.022 (25.96)
1.552 (39.42)
Specifications subject to change without notice.
Available as internal mounting only.
43
MEMS sensors
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