Series SB
Toggles
Low/Medium Capacity Pushbuttons
GENERAL SPECIFICATIONS FOR SB25, SB60s, SB221s, SB265
Electrical Capacity (Resistive Load)
Power Level:
Shown in the following tables
Rockers
Pushbuttons
Other Ratings
C
Contact Resistance:
Insulation Resistance:
Dielectric Strength:
Programmable Illuminated PB
Mechanical Life:
Electrical Life:
Total Travel:
Operating Temp Range:
10 milliohms maximum
200 megohms minimum @ 500V DC for SB221s, SB25, & SB265;
1,000 megohms minimum @ 500V DC for SB60s.
1,500V AC minimum for SB265 & SB25 for 1 minute minimum;
2,000V AC minimum between contacts for SB221s & SB60s for 1 minute minimum;
1,500V AC minimum between contacts & case for SB221s & SB60s for 1 minute minimum
50,000 operations minimum for SB221s;
30,000 operations minimum for SB25, SB60s, SB265
10,000 operations minimum
SB221s .116” (2.95mm); SB60s .094” (2.4mm); SB265 .213” (5.4mm);
SB25 .195” (4.95mm)
–10°C through +70°C (+14°F through +158°F)
Keylocks
Materials & Finishes
Cap:
Plunger:
Bushing:
Case:
Case Cover:
Movable & Stationary Contacts:
Terminals:
Polybutylene terephthalate (PBT) (AT414)
Polyacetal or brass with nickel plating
Brass with nickel plating
Phenolic resin or melamine phenolic resin
Steel with zinc plating
Copper with silver plating for SB221s; silver alloy with silver plating for SB25, SB60s, & SB265
Copper with tin plating for SB25 & SB60s; copper with silver plating for SB265
Slides
Rotaries
Installation
Soldering Time & Temp:
Tactiles
Manual Soldering (Solder Lug): See Profile A in Supplement section.
Standards & Certifications
UL:
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.
UL or cULus recognition designated beside part numbers on following pages.
See Supplement section to find UL or cULus rating details.
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.
CSA certification designated beside part numbers on following pages.
See Supplement section to find CSA rating details.
Tilt
CSA:
Touch
Supplement
Accessories
Indicators
C128
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Low/Medium Capacity Pushbuttons
SINGLE POLE WITH SOLDER LUG OR SCREW LUG
* UL, cULus & CSA recognized only when ordered with marking
on switch (see General Specs)
Series SB
Electrical Capacity
(Resistive)
Rockers
AC
125V
AC
250V
Pushbutton Position/Connected Terminals
( ) = Momentary
Normal
OFF
ON
OFF
ON
1
4
Model
R
* Approvals
R
C
US
Pole &
Throw
SPST
SPST
SPST
SPST
SPST
SB221NO
Keyway
Down
(ON)
(OFF)
(ON)
(OFF)
SPST
SB221NC
1-4
—
1-4
—
––
––
C
Notes:
Standard Hardware: AT504M Knurled Nut, AT508 Lockwasher, AT527M Hex Backup Nut. See Accessories & Hardware section.
Keyway
M12 P1
(8.0)
.315
(13.2) Dia
.520
(7.0)
.276
M3 x P0.5 x 4
(0.8)
.031
(25.5)
1.004
(8.0)
.315
B
(13.2)
.520
(11.0)
.433
A
(12.0)
.472
(15.7)
.618
(2.4) Dia
.094
(0.8)
.031
(1.5)
.060
(11.5)
.453
Dimension A: .185” (4.7mm) for NO model & .150” (3.8mm) for NC model.
Dimension B Plunger Extension: .197” (5.0mm) for NO model & .161” (4.1mm) for NC model.
Panel Thickness
.193” (4.9mm)
DOUBLE POLE WITH SOLDER LUG
* UL & cULus recognized only when ordered with
marking on switch (see General Specs)
Pushbutton Position/Connected Terminals
( ) = Momentary
Normal
ON
Keyway
Electrical Capacity
(Resistive)
AC
125V
AC
250V
Model
R
* Approvals
R
SB61A
SB61B
SB63A
––
––
––
––
––
––
––
DPDT
DPDT
Throw &
Schematic:
2-3 5-6
2-3 5-6
2-3 5-6
DPDT
(ON)
(ON)
(ON) or Lockdown ON
2
1
(COM)
3
4
5
6
2-1 5-4
2-1 5-4
2-1 5-4
10A
3A
10A
5A
1.5A
5A
ON
ON
Lockdown for SB63A is
achieved by actuating and then
turning the button clockwise.
Note: Terminal numbers are
actually on the switch.
Touch
Notes:
Standard Hardware: AT504M Knurled Nut, AT508 Lockwasher, AT527M Hex Backup Nut. See Accessories & Hardware section.
6
3
(12.5) Dia
.492
(31.2)
1.228
(11.5)
.453
(1.5)
.060
(13.2) Dia
.520
(4.8) Typ
.189
COM 5
4
2
1
(18.6)
.732
(5.6)
.220
(11.0)
.433
A
(14.0)
.551
(25.7)
1.012
(5.7)
.224
(0.8) Typ
.031
Dimension A: .169” (4.3mm) for SB61 model and .130” (3.3mm) for SB63 model.
www.nkkswitches.com
Panel Thickness
.193” (4.9mm)
C129
Supplement
SB61A
Supplied with
AT414 Black Cap
Accessories
Indicators
Keyway
M12 P1
(2.4) Dia Typ
.094
Tilt
Tactiles
C
US
Pole &
Throw
Down
Slides
Rotaries
SB221NO
Supplied with
AT414 Black Cap
Keylocks
4
1
(12.5) Dia
.492
Programmable Illuminated PB
Suffix T =
Screw Lug
Throw &
Schematic:
1
4
Note: Terminal numbers are
actually on the switch.
Pushbuttons
SB221NO
SB221NC
SB221TNO
SB221TNC
––
––
–
1-4
–
1-4
3A
3A
3A
3A
1.5A
1.5A
1.5A
1.5A
Toggles
Series SB
Toggles
* UL, cULus & CSA recognized only when ordered with
marking on switch (see General Specs)
Rockers
Low/Medium Capacity Pushbuttons
DOUBLE POLE WITH SOLDER LUG
Pushbutton Position/Connected Terminals
( ) = Momentary
Normal
Keyway
Electrical Capacity
(Resistive)
AC
125V
AC
250V
Model
R
* Approvals
R
C
US
Pole &
Throw
DPDT
Down
SB25
Pushbuttons
ON
DPDT
2-3 5-6
2
1
ON
(COM)
3
4
5
6
2-1 5-4
15A
9A
C
Throw &
Schematic:
Note: Terminal numbers are
actually on the switch.
Programmable Illuminated PB
Notes:
Standard Hardware: AT504M Knurled Nut, AT508 Lockwasher, AT527M Hex Backup Nut. See Accessories & Hardware section.
Keyway
M12 P1
(2.4) Dia
.094
(4.8) Typ
.189
(13.2) Dia
.520
COM
63
(12.5) Dia
.492
(31.2)
1.228
(1.5)
.060
(11.5)
.453
52
Keylocks
(8.0)
.315
41
(19.2)
.756
(7.0)
.276
(11.0)
.433
(4.7)
.185
(5.7)
.224
(14.0)
.551
(26.7)
1.051
Rotaries
SB25
Supplied with
AT414 Black Cap
Panel Thickness
.193” (4.9mm)
Slides
SINGLE POLE WITH SOLDER LUG
* UL, cULus & CSA recognized only when ordered with
marking on switch (see General Specs)
Pushbutton Position/Connected Terminals
( ) = Momentary
Normal
Keyway
Electrical Capacity
(Resistive)
AC
125V
AC
250V
Tactiles
Model
R
* Approvals
R
C
US
Pole &
Throw
SPST
Down
SB265
Tilt
ON
SPST
1
1-4
OFF
—
6A
3A
Throw &
Schematic:
4
Note: Terminal numbers are
actually on the switch.
Notes:
Standard Hardware: AT504M Knurled Nut, AT508 Lockwasher, AT527M Hex Backup Nut. See Accessories & Hardware section.
Touch
Keyway
M12 P1
Indicators
(12.5) Dia
.492
(10.7) Dia
.421
(25.5)
1.004
(9.0)
.354
(3.0) Dia
.118
Accessories
4
1
(5.1)
.201
(10.0)
.394
(13.2)
.520
(6.7) (5.3)
.264 .209
(14.5)
.571
(14.9)
.587
(2.4) Dia
.094
(1.0) Typ
.039
Supplement
SB265
Supplied with Chrome
Plated Brass Cap
Panel Thickness
.291” (7.4mm)
C130
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