S21A NKK Switches, S21A Datasheet - Page 2

• Manufacturer Part Number: S21A
• Description: SW TOGGLE DPST 15A SOLDER LUG
• Manufacturer: NKK Switches
• Series: Sr
• Type: Toggler

Specifications of S21A

• Circuit: DPST
• Switch Function: On-Off
• Contact Rating @ Voltage: 15A @ 125VAC
• Actuator Type: Standard Round
• Actuator Length: 17.50mm
• Illumination: Non-Illuminated
• Mounting Type: Panel Mount
• Termination Style: Solder Lug
• Bushing Thread: M12
• Body Style: Standard
• Contact Form: DPST
• Current, Rating: 15 A
• Dielectric Strength: 2000 VAC
• Mounting Hole Size: 0.453 "
• Number Of Poles: 2
• Number Of Positions: 2
• Operation: On-None-Off
• Special Features: Medium Capacity
• Termination: Solder
• Voltage, Rating: 250/30 VAC/VDC
• Pole Throw Configuration: DPST
• Switch Configuration: ON None OFF
• Actuator Style: Toggle
• Current Rating (max): 15A
• Ac Voltage Rating (max): 250VVAC
• Dc Voltage Rating (max): 30VVDC
• Contact Material: Silver Alloy/Copper
• Contact Plating: Silver
• Mechanical Life: 50000
• Product Height (mm): 53.2mm
• Product Depth (mm): 18.6mm
• Operating Temperature Min Deg. C: -10C
• Product Length (mm): 31.2mm
• Operating Temperature Max Deg. C: 70C
• Mounting Style: Panel Mount with Threads
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: S21A-RO; S21A-RO

A
Series S
A98
Model
Model
Throw &
Schematics:
Notes: Standard Hardware: AT504M Knurled Nut, AT508 Lockwasher, AT527M Backup Hex Nut. See Accessories & Hardware section.
Optional Splashproof Boot Assemblies: AT401 & AT4181 boots plus hex nut & o-ring. See Accessories & Hardware section.
* See General Specifications page for approval marking.
*
Throw &
Schematics:
Notes: Standard Hardware: AT504M Knurled Nut, AT508 Lockwasher, AT527M Backup Hex Nut. See Accessories & Hardware section.
Optional Splashproof Boot Assemblies: AT401 & AT4181 boots plus hex nut & o-ring. See Accessories & Hardware section.
* See General Specifications page for approval marking.
*
S21A
S6A
S7A
S1A
S2A
S3A
Wire harness & cable assemblies offered only in Americas.
Wire harness & cables assemblies offered only in Americas.
S6A
S2A
R
R
––
––
*Approvals
*Approvals
DPST
C
C
––
––
US
US
SPST
1
––
Keyway
Keyway
1
Pole &
Throw
(18.6)
Pole &
Throw
.732
(18.0)
.709
DPDT
DPDT
DPST
SPDT
SPDT
SPST
3
4
3
ON
ON
ON
INTERNAL
CONNECTION
ON
ON
ON
Keyway
DOUBLE POLE WITH SOLDER LUG
Down
SINGLE POLE WITH SOLDER LUG
Toggle Position/Connected Terminals
Keyway
Toggle Position/Connected Terminals
Down
.236
.236
6
(6.0) Dia
(6.0) Dia
25°
1-3 4-6
2-3 5-6
2-3 5-6
α
INTERNAL
CONNECTION
1-3
2-3
2-3
(17.5)
.689
(17.5)
.689
www.nkk.com
M12 P1
M12 P1
NONE
NONE
Center
Center
NONE
NONE
OFF
OFF
SPDT
DPDT
(10.0)
.394
(10.0)
.394
OFF
ON
ON
3
3
Medium Capacity Standard Size Toggles
OFF
ON
ON
(25.7)
1.012
(23.7)
.933
Up
2-1 5-4
2-1 5-4
2 (COM)
Up
2
(5.7)
.224
—
1
.224
(COM)
(5.7)
1
S21A does not have terminals 2 & 5
2-1
2-1
—
.094
(2.4) Dia Typ
.094
(2.4) Dia Typ
(4.8) Typ
.189
(4.8) Typ
.189
6
(0.8) Typ
.031
S1A does not have terminal 2
5
125V
20A
125V
15A
20A
15A
15A
15A
AC
AC
4
*
*
Resistive
Resistive
Electrical Capacity
6
5
4
Electrical Capacity
250V
250V
15A
10A
10A
6A
6A
6A
3
2
1
AC
AC
(0.8) Typ
.031
Note: Terminal numbers are
Note: Terminal numbers are
3
2
1
(30.0)
(31.2)
1.228
1.181
15A
20A
20A
20A
20A
20A
30V
30V
actually on the switch
DC
DC
actually on the switch
Inductive
Inductive
AC 125V
AC 125V
PF 0.6
PF 0.6
Panel Thickness:
8A
8A
8A
Panel Thickness:
8A
8A
8A
.158” (4.0mm)
.158” (4.0mm)
Maximum
Maximum
.060
.060
(1.5)
(1.5)
of Throw
of Throw
(12.5) Dia
.492
(12.5) Dia
.492
(11.5)
.453
(11.5)
.453
Angle
Angle
21°
21°
28°
25°
25°
25°
α =