Low & Medium Security Keylocks
Series SK
Toggles
General
Specifications
Electrical Capacity (Resistive Load)
Other Ratings
Power Level (silver):
3A @ 125V AC for low & medium security; 1A @ 250V AC for low security
Contact Resistance:
Insulation Resistance:
Dielectric Strength:
10 milliohms maximum
1,000 megohms minimum @ 500V DC
1,000V AC minimum between contacts for 1 minute minimum;
1,500V AC minimum between contacts & case for 1 minute minimum
30,000 cycles minimum
10,000 cycles minimum
.026Nm (.234 lb
•
in) for low & medium security
Break-before-make
90° for 2-position & 45° for 3-position
Mechanical Life:
Electrical Life:
Nominal Operating Torque:
Contact Timing:
Angle of Throw:
Key:
Tumbler Barrel:
Housing/Bushing:
Base:
Movable Contactor:
Stationary Contacts:
Terminals:
Environmental Data
Operating Temperature Range:
Humidity:
Vibration:
Shock:
–25°C through +70°C (–13°F through +158°F)
90 ~ 95% humidity for 96 hours @ 40°C (104°F)
10 ~ 55Hz with peak-to-peak amplitude of 1.5mm traversing the frequency range & returning
in 1 minute; 3 right angled directions for 2 hours
50G (490m/s
2
) acceleration (tested in 6 right angled directions, with 5 shocks in each direction)
Installation
Mounting Torque:
Soldering Time & Temperature:
1.5Nm (13.28 lb
•
in) maximum
Manual Soldering: See Profile A in Supplement section.
Touch
Standards & Certifications
UL:
CSA:
www.nkkswitches.com
F9
Supplement
Accessories
File No. E44145 - Recognized only when ordered with marking on switch.
Add “/U” or “/CUL” to end of part number to order UL recognized switch.
All low security models recognized at 3A @ 125V AC or 1A @ 250V AC
& all medium security models recognized at 3A @ 125V AC
File No. 023535_0_000 - Certified only when ordered with marking on switch.
Add “/C” to end of part number to order CSA certified switch.
All low security models certified at 3A @ 125V AC or 1A @ 250V AC
Indicators
Tilt
Tactiles
Slides
Zinc alloy with chrome plating (matte) for low security models;
brass with nickel plating (shiny) for medium security models
Zinc alloy with chrome plating (matte) for low security models;
zinc alloy with chrome plating (shiny) for medium security models
Zinc alloy with chrome plating (matte) for low security models;
zinc alloy with chrome plating (shiny) for medium security models
Phenolic resin (thermoset)
Silver
Silver capped copper with silver plating
Copper or brass with silver plating
F
Rotaries
Keylocks
Materials & Finishes
Programmable Illuminated PB
Pushbuttons
Rockers
Series SK
Toggles
Low & Medium Security Keylocks
Rockers
Distinctive
Characteristics
12mm diameter bushing for easy panel cutout preparation and
high density mounting.
Epoxy sealed terminals prevent entry of flux and other
contaminants.
Programmable Illuminated PB
Pushbuttons
Short behind panel dimension - only 1.063” (27.0mm).
Keylocks
F
High dielectric strength of 1,500 volts between contacts
and case.
Rotaries
Detent mechanism gives crisp, positive action for accurate
switch setting.
Tilt
Tactiles
Slides
Dust resistant interior construction protects contacts.
Actual Size
Supplement
Accessories
Indicators
Touch
F10
www.nkkswitches.com
Low & Medium Security Keylocks
TYPICAL SWITCH ORDERING EXAMPLE
Series SK
A
Lock Mechanisms
A
D
Low Security
Medium Security
(not combinable
with code 3D circuit)
01
SK
1
Poles
1
SPDT
2B
W
01
Terminals
Solder Lug
Code
2A
2B
3D
3E
Pos. 1
ON
ON
ON
ON
Pos. 2
NONE
NONE
OFF
OFF
Pos. 3
ON
ON
ON
ON
Key Removes
Positions 1 and 3
Position 1
Positions 1, 2, 3
Position 2
W
Silver
Rated 3A @ 125V AC
F
IMPORTANT:
Switches are supplied without UL, cULus & CSA marking unless specified.
UL, cULus & CSA recognized only when ordered with marking on the switch.
Specific models, ratings, & ordering instructions are noted on the General
Specifications page.
Tactiles
DESCRIPTION FOR TYPICAL ORDERING EXAMPLE
Touch
SK12BAW01
Silver Contacts
Rated 3A @ 125V AC
Solder Lug Terminals
SPDT ON-NONE-ON Circuit
Key Removable in
Position 1
Low Security Lock Mechanism
2 keys supplied
with each switch
www.nkkswitches.com
F11
Supplement
Accessories
Indicators
Tilt
Slides
Rotaries
Keylocks
Circuits & Key-Removable Positions
Contact Material
Programmable Illuminated PB
Pushbuttons
Rockers
Toggles
Series SK
Toggles
Low & Medium Security Keylocks
POLES, CIRCUITS & KEY-REMOVABLE POSITIONS
Rockers
Pole &
Throw
SPDT
SPDT
SPDT
SPDT
Key Positions
Model
SK12A
SK12B
*SK13D
SK13E
Pos 1
ON
ON
ON
ON
Pos 2
NONE
NONE
OFF
OFF
Pos 3
ON
ON
ON
ON
Connected Terminals
(Terminal numbers are on switch)
Pos 1
COM-1
COM-1
COM-1
COM-1
Pos 2
____
____
Pos 3
COM-2
COM-2
COM-2
COM-2
Schematic
COM
= Key Removable
•
= Not Removable
= Maximum Arc
POS 1
3
Pushbuttons
POS 1
1
2
3
2
Programmable Illuminated PB
OPEN
OPEN
COM
OP E N
POS 1
3
2
2
POS 1
3
1
*
Available with low security only
KEY REMOVABLE
Keylocks
F
A
Positions 1 & 3
90° Angular Throw
B
Position 1
90° Angular Throw
D
Positions 1, 2 & 3
45° Angular Throw
E
Position 2
45° Angular Throw
Rotaries
LOCK MECHANISMS & KEYS
A
Low Security Mechanism
D
Slides
Medium Security Mechanism
Zinc Alloy with Chrome Plating (matte finish)
Two keys provided with each switch
(no master key available)
For ordering additional keys:
AT4081 for SK12A and SK12B, marked “1201”
AT4082 for SK13D and SK13E, marked “1301”
Brass with Nickel Plating (shiny finish)
One key provided with each switch
(no master key available)
For ordering additional keys, indicate the same key
number that is engraved on the face of your switch.
Key numbers (001 through 010) randomly assigned.
Tilt
Tactiles
AT4081
Touch
(17.0)
.669
Typical Key Ordering Example:
AT4124-001
(14.2)
.559
Indicators
(1.8)
.071
(9.4)
.370
Accessories
AT4082
(17.0)
.669
(20.0)
.787
Supplement
(14.2)
.559
(1.8)
.071
(9.4)
.370
(16.2)
.638
(1.8)
.071
(13.7)
.539
F12
www.nkkswitches.com
Low & Medium Security Keylocks
CONTACT MATERIALS, RATINGS, & TERMINALS
W
Silver over Silver
Power Level
3A @ 125V AC
Series SK
Toggles
Epoxy Seal
(2.0)
.079
(4.5)
.177
(2.0)
.079
Solder Lug Terminals
TYPICAL SWITCH DIMENSIONS
Low Security • 90° Angular Throw
POS 1
90°
POS 3
(17.0)
.669
M12 P1
(1.1) x (2.0) Typ
.043 x .079
(0.8) Typ
.031
M
(0.5)
.020
(2.0) Typ
.079
(3.0)
.118
(13.2)
.520
(13.0)
.512
(30.0)
1.181
(4.5)
.177
F
SK12BAW01
Low Security • 45° Angular Throw
POS 2
45°
45°
POS 1
POS 3
(17.0)
.669
(0.5)
.020
M12 P1
(1.1) x (2.0) Typ
.043 x .079
(2.0) Typ
.079
2
C
(0.8) Typ
.031
(3.0)
.118
(13.2)
.520
(13.0)
.512
(4.5)
.177
(14.0) Dia
.551
www.nkkswitches.com
F13
Supplement
Accessories
Indicators
SK13EAW01
Touch
(30.0)
1.181
(10.8)
.425
Tilt
Tactiles
O
1
Slides
Rotaries
(14.0) Dia
.551
(10.8)
.425
Keylocks
Programmable Illuminated PB
Pushbuttons
01
(1.1)
.043
Thk = (0.8)
.031
Rockers
1
2
CO
M
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