SB221TNO NKK Switches, SB221TNO Datasheet - Page 2

• Manufacturer Part Number: SB221TNO
• Description: SW PUSHBUTTON SPST NO SCREW LUG
• Manufacturer: NKK Switches
• Series: SBr
• Type: Standardr

Specifications of SB221TNO

• Circuit: SPST-NO
• Switch Function: Off-Mom
• Contact Rating @ Voltage: 3A @ 125VAC
• Actuator Type: Plunger for Cap
• Mounting Type: Panel Mount
• Termination Style: Screw Terminal
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Illumination Type, Color: -
• Illumination Voltage (nominal): -
• Other names: SB221TNO-RO; SB221TNO-RO

Low/Medium Capacity Pushbuttons
Notes: Standard Hardware: AT504M Knurled Nut, AT508 Lockwasher, AT527M Hex Backup Nut. See Accessories & Hardware section.
* See General Specifications page for approval marking.
*
Notes: Standard Hardware: AT504M Knurled Nut, AT508 Lockwasher, AT527M Hex Backup Nut. See Accessories & Hardware section.
* See General Specifications page for approval marking.
*
Lockdown for SB63A is
achieved by actuating and then
turning the button clockwise.
Keyway
Keyway
SB61A
SB61B
SB63A
Model
Model
SB25
Wire harness & cable assemblies offered only in Americas.
Wire harness & cable assemblies offered only in Americas.
Dimension A: .169” (4.3mm) for SB61 model and .130” (3.3mm) for SB63 model.
(18.6)
.732
(19.2)
.756
––
––
R
R
*Approvals
*Approvals
(13.2) Dia
.520
(13.2) Dia
.520
C
C
––
––
US
US
Throw &
Schematic:
.220
––
––
––
(5.6)
(11.0)
.433
(7.0)
.276
(11.0)
.433
M12 P1
M12 P1
A
.224
(5.7)
Pole &
Throw
Pole &
Throw
Throw &
Schematic:
DPDT
DPDT
DPDT
(14.0)
.551
(14.0)
.551
DOUBLE POLE WITH SOLDER LUG
DOUBLE POLE WITH SOLDER LUG
Normal
ON
ON
ON
Pushbutton Position/Connected Terminals ( ) = Momentary
Pushbutton Position/Connected Terminals ( ) = Momentary
Normal
ON
(25.7)
1.012
DPDT
(26.7)
1.051
.094
(2.4) Dia
(5.7)
.224
.185
(4.7)
.094
2-3 5-6
2-3 5-6
2-3 5-6
(2.4) Dia Typ
(4.8) Typ
.189
DPDT
Keyway
(4.8) Typ
.189
(8.0)
.315
2-3 5-6
Keyway
1
COM
COM
www.nkk.com
1
Down
(ON)
(ON)
(ON) or Lockdown ON
5
4
6
2
3
(COM)
6 3
5 2
4 1
2
(0.8) Typ
.031
Down
ON
4
3
(COM)
3
2
1
5
(31.2)
1.228
4
1.228
(31.2)
5
6
Panel Thickness
.193” (4.9mm)
6
2-1 5-4
*
*
Panel Thickness
.193” (4.9mm)
2-1 5-4
2-1 5-4
2-1 5-4
.060
(1.5)
.060
(1.5)
(12.5) Dia
.492
(11.5)
.453
(12.5) Dia
.492
(11.5)
.453
Note: Terminal numbers are
Note: Terminal numbers are
Electrical Capacity (Resistive)
Electrical Capacity (Resistive)
125V
125V
15A
10A
10A
Series SB
3A
AC
AC
actually on the switch.
actually on the switch.
AT414 Black Cap
AT414 Black Cap
Supplied with
Supplied with
SB25
SB61A
1.5A
250V
250V
9A
5A
5A
AC
AC
C129
C