Series S

Medium/High Capacity Standard Size Toggles

www.nkk.com

A112

A

Notes: Standard Hardware: AT503M Face Hex Nut, AT506M Locking Ring, 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.

* Wire harness & cable assemblies offered only in Americas.

S422

S421 does not have terminals 2 & 5

S421T does not have terminals 2 & 5

S423T

(9.0)

.354

(12.5) Dia

.492

(3.0) Dia

.118

(9.0)

.354

(12.5) Dia

.492

(3.0) Dia

.118

Maximum

Panel Thickness:

.185” (4.7mm)

Notes: Standard Hardware: AT503M Face Hex Nut, AT506M Locking Ring, 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.

Keyway

(19.0)

.748

(17.5)

.689

(12.0)

.472

(25.1)

.988

(6.1) Dia

.240

M12 P1

(2.4) Dia Typ

.094

(4.8) Typ

.189

(5.7)

.224

α

6

3

2

1

4

5

(33.2)

1.307

(0.8) Typ

.031

(33.2)

1.307

1

2

4

5

6

3

(17.5)

.689

(12.0)

.472

(31.1)

1.224

(6.1) Dia

.240

M12 P1

M4 X 5

(11.0)

.433

α

Keyway

(19.0)

.748

Toggle Position/Connected Terminals

( ) = Momentary

Electrical Capacity

Model

Approvals

Pole &

Throw

Down

Center

Up

Resistive

Inductive

Motor

Load

α =

Angle

of Throw

AC

125V

AC

250V

PF 0.75 - 0.8

AC

125V

AC 125V

AC 250V

S421T

––

––

DPST

ON

1-3 4-6

NONE

OFF

—

20A

20A

20A

20A

750W

24°

S422T

––

––

DPDT

ON

2-3 5-6

NONE

ON

2-1 5-4

20A

20A

20A

20A

750W

24°

S423T

––

––

DPDT

ON

2-3 5-6

OFF

ON

2-1 5-4

20A

20A

20A

20A

750W

28°

S425T

––

––

DPDT

ON

2-3 5-6

NONE

(ON)

2-1 5-4

15A

15A

15A

15A

400W

24°

S428T

––

––

DPDT

(ON)

2-3 5-6

OFF

(ON)

2-1 5-4

15A

15A

15A

15A

400W

24°

S429T

––

––

DPDT

ON

2-3 5-6

OFF

(ON)

2-1 5-4

15A

15A

15A

15A

400W

24°

Throw &

Schematics:

Keyway

4

6

1

3

25

(COM)

6

4

INTERNAL

CONNECTION

3

1

DPST

DPDT

DOUBLE POLE WITH SCREW LUG

Note: Terminal numbers

are on the switch

Maximum

Panel Thickness:

.185” (4.7mm)

Toggle Position/Connected Terminals

( ) = Momentary

Electrical Capacity

Model

Approvals

Pole &

Throw

Down

Center

Up

Resistive

Inductive

Motor

Load

α =

Angle

of Throw

AC

125V

AC

250V

PF 0.75 - 0.8

AC

125V

AC 125V

AC 250V

S421

––

––

DPST

ON

1-3 4-6

NONE

OFF

—

25A

25A

25A

25A

750W

24°

S422

––

––

DPDT

ON

2-3 5-6

NONE

ON

2-1 5-4

25A

25A

25A

25A

750W

24°

S423

––

––

DPDT

ON

2-3 5-6

OFF

ON

2-1 5-4

25A

25A

25A

25A

750W

28°

S425

––

––

DPDT

ON

2-3 5-6

NONE

(ON)

2-1 5-4

15A

15A

15A

15A

400W

24°

S428

––

––

DPDT

(ON)

2-3 5-6

OFF

(ON)

2-1 5-4

15A

15A

15A

15A

400W

24°

S429

––

––

DPDT

ON

2-3 5-6

OFF

(ON)

2-1 5-4

15A

15A

15A

15A

400W

24°

Throw &

Schematics:

DOUBLE POLE WITH SOLDER LUG *

Keyway

4

6

1

3

25

(COM)

6

4

INTERNAL

CONNECTION

3

1

DPST

DPDT

Note: Terminal numbers

are on the switch

R

R