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Low & Medium Security Keylocks
Series SK
Distinctive Characteristics
12mm diameter bushing for easy panel cutout preparation and high density mounting. Epoxy sealed terminals prevent entry of flux and other contaminants.
Short behind panel dimension - only 1.063" (27.0mm).
High dielectric strength of 1,500 volts between contacts and case.
Detent mechanism gives crisp, positive action for accurate switch setting.
Dust resistant interior construction protects contacts.
Actual Size
NKK Switches * email: sales@nkkswitches.com * Phone (480) 991-0942 * Fax (480) 998-1435 * www.nkkswitches.com
05-08
Low & Medium Security Keylocks
Series SK
General Specifications
Electrical Capacity (Resistive Load)
Power Level (code W): 3A @ 125V AC for low & medium security; 1A @ 250V AC for low security
Other Ratings
Contact Resistance: Insulation Resistance: Dielectric Strength:
Mechanical Life: Electrical Life: Nominal Operating Torque: Contact Timing: Angle of Throw:
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
Materials & Finishes
Key:
Tumbler Barrel: Housing/Bushing: Base: Movable Contactor: Stationary Contacts: Terminals:
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
Environmental Data
Operating Temperature Range: Humidity: Vibration: Shock:
-25C through +70C (-13F through +158F) 90 ~ 95% humidity for 96 hours @ 40C (104F) 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/s2) 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.
Standards & Certifications
UL Recognized:
C-UL Recognized:
R
CSA Certified:
All low security models recognized at 3A @ 125V AC or 1A @ 250V AC & all medium security models recognized at 3A @ 125V AC; UL File No. WOYR2.E44145; add "/U" to end of part number to order UL mark on switch. All low security models recognized at 3A @ 125V AC or 1A @ 250V AC & all medium security models recognized at 3A @ 125V AC; C-UL File No. WOYR8.E44145; add "/C-UL" to end of part number to order C-UL mark on switch. All low security models certified at 3A @ 125V AC or 1A @ 250V AC; CSA File No. 023535-0-000; add "/C" to end of part number to order CSA mark on switch.
NKK Switches * email: sales@nkkswitches.com * Phone (480) 991-0942 * Fax (480) 998-1435 * www.nkkswitches.com
05-08
Low & Medium Security Keylocks
TYPICAL SWITCH ORDERING EXAMPLE
Series SK
SK
1
POLES
1 SPDT
2B
A
LOCK MECHANISMS
A D Low Security Medium Security (not combinable with code 3D circuit)
W
01
TERMINALS
01 Solder Lug
CIRCUITS & KEY-REMOVABLE POSITIONS
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
CONTACT MATERIAL
W Silver Rated 3A @ 125V AC
DESCRIPTION FOR TYPICAL ORDERING EXAMPLE
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
IMPORTANT!
Switches are supplied without UL, C-UL & CSA markings unless specified. Specific models & ratings noted on General Specifications page.
NKK Switches * email: sales@nkkswitches.com * Phone (480) 991-0942 * Fax (480) 998-1435 * www.nkkswitches.com
05-08
Low & Medium Security Keylocks
POLES, CIRCUITS & KEY-REMOVABLE POSITIONS
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)
Series SK
* = Not Removable
= Maximum Arc
POS 1
= Key Removable
Pos 1 COM-1 COM-1 COM-1 COM-1
Pos 2 ____ ____
Pos 3 COM-2 COM-2 COM-2 COM-2
Schematic
COM
3 POS 1 1 2 3 2
OPEN OPEN
COM OPEN
POS 1
3
2 2 POS 1 3
1
* Available with low security only
KEY REMOVABLE 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
LOCK MECHANISMS & KEYS A
Low Security Mechanism
D
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.
AT4081
(17.0) .669
Typical Key Ordering Example: AT4124-001
(14.2) .559 (1.8) .071 (9.4) .370
AT4082
(17.0) .669
(20.2) .795
(14.2) .559 (1.8) .071 (9.4) .370
(16.2) .638 (1.8) .071 (13.7) .539
NKK Switches * email: sales@nkkswitches.com * Phone (480) 991-0942 * Fax (480) 998-1435 * www.nkkswitches.com
05-08
Low & Medium Security Keylocks
CONTACT MATERIALS, RATINGS, & TERMINALS W
Silver over Silver Power Level 3A @ 125V AC
Series SK
Epoxy Seal (2.0) .079
(4.5) .177 (2.0) .079
01
Solder Lug Terminals
(1.1) .043 Thk = (0.8) .031
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
(14.0) Dia .551
(10.8) .425
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
(30.0) 1.181
(10.8) .425
SK13EAW01
NKK Switches * email: sales@nkkswitches.com * Phone (480) 991-0942 * Fax (480) 998-1435 * www.nkkswitches.com
1 2
1
CO
O
M
05-08
Low & Medium Security Keylocks
TYPICAL SWITCH DIMENSIONS
Medium Security * 90 Angular Throw
POS 1 90
Series SK
M12 P1
005
POS 3
(1.1) x (2.0) Typ .043 x .079 (0.8) Typ .031
M
(2.0) Typ .079
(15.0) Dia .591
(10.0) (3.5) .394 .138 (15.3) .602
(13.0) .512
(32.7) 1.287
(4.5) .177
(10.8) .425
SK12ADW01
Medium Security * 45 Angular Throw
POS 1 45 POS 2 (1.1) x (2.0) Typ .043 x .079 (0.8) Typ .031
M
M12 P1
006
45 POS 3
006
(0.75) .0295
(2.0) Typ .079
(15.0) Dia .591
(10.0) (3.5) .394 .138 (15.3) .602
(13.0) .512
(32.7) 1.287
(4.5) .177
(10.8) .425
SK13EDW01
PANEL CUTOUT & THICKNESS
(12.0) Dia .472
The 12mm bushing is .512" (13.0mm) long. It allows mounting these devices in a maximum effective panel thickness of .315" (8.0mm).
(11.2) .441
STANDARD HARDWARE
AT527M Hex Mounting Nut
1 included with each switch Steel with nickel plating
(16.0) .630 (2.0) .079 M12 P1
AT508 Internal Tooth Lockwasher
(14.0) .551
(12.1) .476
1 included with each switch Steel with zinc/chromate plating
(1.0) .039 (13.8) Dia .543
NKK Switches * email: sales@nkkswitches.com * Phone (480) 991-0942 * Fax (480) 998-1435 * www.nkkswitches.com
1 2
(20.0) .787
1 2
(20.0) .787 (0.75) .0295
005
CO CO
(15.8) Dia .622
(0.5) .020
05-08

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