SB25-RO NKK Switches, SB25-RO Datasheet
SB25-RO
Manufacturer Part Number
SB25-RO
Description
Pushbutton Switches DPDT 15A 125VA
Manufacturer
NKK Switches
Series
SBr
Type
Low, Medium Capacity Pushbuttonsr
Datasheet
1.SB61A.pdf
(3 pages)
Specifications of SB25-RO
Contact Form
DPDT
Switch Function
ON - ON
Contact Rating
15 Amps at 125 VoltsAC, 9 Amps at 250 VoltsAC
Termination Style
Solder Lug
Actuator
Plunger, without Cap
Supply Voltage
125 VoltsAC, 250 VoltsAC
Mounting Style
Panel
Terminal Seal
Epoxy
Contact Plating
Silver
Contact Material
Copper
Illumination
Not Illuminated
Body Length
31.2 mm
Dielectric Strength
1500 Volts
Features
Constructed of high performance materials, including zinc plated steel mounting plates
Housing Material
Phenolic Resin
Insulation Resistance
200 MOhms
Mounting Angle
Straight
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
633-SB25 SB-25 SB25
C
Series SB
C128
Electrical Capacity (Resistive Load)
Other Ratings
Materials & Finishes
Installation
Standards & Certifications
Notes: Standard Hardware: AT504M Knurled Nut, AT508 Lockwasher, AT527M Hex Backup Nut. See Accessories & Hardware section.
* See General Specifications for approval marking.
*
Movable & Stationary Contacts:
Suffix T =
Screw Lug
SB221TNO
Wire harness & cable assemblies offered only in Americas.
SB221TNC
SB221NO
SB221NC
AT414 Black Cap
Model
Supplied with
All switches listed here are supplied
SB221NO
Operating Temp Range:
Soldering Time & Temp:
Insulation Resistance:
with AT414 black cap.
Contact Resistance:
Dielectric Strength:
Mechanical Life:
R
GENERAL SPECIFICATIONS FOR SB25, SB60s, SB221s, SB265
Electrical Life:
––
––
Throw &
Schematic:
Power Level:
*Approvals
Total Travel:
Terminals:
C
Bushing:
––
––
Dimension B Plunger Extension: .197” (5.0mm) for NO model & .161” (4.1mm) for NC model.
Case:
SINGLE POLE WITH SOLDER LUG
US
CSA:
Cap:
Keyway
UL:
(13.2)
.520
Dimension A: .185” (4.7mm) for NO model & .150” (3.8mm) for NC model.
Shown in the following tables
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)
Polybutylene terephthalate (PBT) (AT414)
Brass with nickel plating
Phenolic resin or melamine phenolic resin
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
Manual Soldering (Solder Lug): See Profile A in Supplement section.
File No. E44145
Designated with UL & cULus recognized symbols beside part numbers on following pages.
See Supplement Index page Z2 to find rating details.
Add “/U” or “/CUL” to end of part number to order UL or cULus marks on switch.
File No. 023535_0_000
Designated with CSA certified symbol beside part numbers on following pages.
See Supplement section to find rating details.
Add “/C” to end of part number to order CSA mark on switch.
SPST
SB221NO
Pole &
Throw
SPST
SPST
SPST
SPST
(13.2) Dia
.520
Normal
OFF
ON
OFF
ON
www.nkk.com
1
Pushbutton Position/Connected Terminals
(11.0)
.433
M12 P1
B
A
4
(12.0)
.472
Keyway
1-4
1-4
–
–
( ) = Momentary
(15.7)
.618
SPST
SB221NC
Low/Medium Capacity Pushbuttons
Down
(ON)
(OFF)
(ON)
(OFF)
*
(2.4) Dia
.094
OR SCREW LUG
Case Cover:
Plunger:
1
4
1-4
1-4
—
—
1
4
.031
Polyacetal or brass with nickel plating
Steel with zinc plating
(0.8)
(25.5)
1.004
(8.0)
.315
Note: Terminal numbers are
Electrical Capacity (Resistive)
125V
3A
3A
3A
3A
AC
(7.0)
.276
actually on the switch.
(8.0)
.315
M3 x P0.5 x 4
Panel Thickness
.193” (4.9mm)
.060
250V
1.5A
1.5A
1.5A
1.5A
(1.5)
AC
(12.5) Dia
.492
(11.5)
.453
(0.8)
.031
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SB25-RO Summary of contents
Page 1
... Brass with nickel plating Phenolic resin or melamine phenolic resin 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 Manual Soldering (Solder Lug): See Profile A in Supplement section. ...
Page 2
... Supplied with AT414 Black Cap .193” (4.9mm) * Electrical Capacity (Resistive 125V 250V 2-1 5-4 15A 9A Note: Terminal numbers are actually on the switch. (12.5) Dia .492 (11.5) .453 (1.5) .060 SB25 Panel Thickness Supplied with .193” (4.9mm) AT414 Black Cap C129 C ...
Page 3
... Wire harness & cable assemblies offered only in Americas. Keyway (13.2) .520 SB265 Supplied with Chrome Plated Brass Cap C130 Low/Medium Capacity Pushbuttons SINGLE POLE WITH SOLDER LUG Pushbutton Position/Connected Terminals ( ) = Momentary Normal Down Pole & Keyway Throw SPST ON 1-4 OFF SPST ...