Series SB

Low/Medium Capacity Pushbuttons

www.nkk.com

C129

C

Panel Thickness

.193” (4.9mm)

SB221NO

Supplied with

AT414 Black Cap

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.

(13.2)

.520

Keyway

M12 P1

(13.2) Dia

.520

(2.4) Dia

.094

(15.7)

.618

(12.0)

.472

(11.0)

.433

A

B

4

1

(25.5)

1.004

(8.0)

.315

(0.8)

.031

(0.8)

.031

(8.0)

.315

(7.0)

.276

M3 x P0.5 x 4

(12.5) Dia

.492

(11.5)

.453

(1.5)

.060

Panel Thickness

.193” (4.9mm)

SB61A

Supplied with

AT414 Black Cap

Dimension A: .169” (4.3mm) for SB61 model and .130” (3.3mm) for SB63 model.

(18.6)

.732

Keyway

(12.5) Dia

.492

(11.5)

.453

(1.5)

.060

(14.0)

.551

(25.7)

1.012

(5.7)

.224

(2.4) Dia Typ

.094

(4.8) Typ

.189

A

(13.2) Dia

.520

(5.6)

.220

(11.0)

.433

M12 P1

(31.2)

1.228

6

3

2

1

4

5

COM

(0.8) Typ

.031

* UL, cULus & CSA recognized only when ordered with marking

on switch (see General Specs)

Pushbutton Position/Connected Terminals

( ) = Momentary

Electrical Capacity (Resistive)

Model

*Approvals

Pole &

Throw

Normal

Down

AC

125V

AC

250V

SB221NO

––

––

SPST

OFF

–

(ON)

1-4

3A

1.5A

SB221NC

SPST

ON

1-4

(OFF)

—

3A

1.5A

SB221TNO

––

––

SPST

OFF

–

(ON)

1-4

3A

1.5A

SB221TNC

SPST

ON

1-4

(OFF)

—

3A

1.5A

Throw &

Schematic:

Note: Terminal numbers are

actually on the switch.

SPST

SB221NO

14

14

SPST

SB221NC

Keyway

Suffix T =

Screw Lug

R

C

R

US

* UL & cULus recognized only when ordered with

marking on switch (see General Specs)

Pushbutton Position/Connected Terminals ( ) = Momentary

Electrical Capacity (Resistive)

Model

*Approvals

Pole &

Throw

Normal

Down

AC

125V

AC

250V

SB61A

––

ON

2-3 5-6

(ON)

2-1 5-4

10A

5A

SB61B

––

––

––

DPDT

ON

2-3 5-6

(ON)

2-1 5-4

3A

1.5A

SB63A

––

––

––

DPDT

ON

2-3 5-6

(ON) or Lockdown ON

2-1 5-4

10A

5A

Throw &

Schematic:

Note: Terminal numbers are

actually on the switch.

DPDT

Keyway

Lockdown for SB63A is

achieved by actuating and then

turning the button clockwise.

13

4

6

2

5

(COM)

R

C

R

US

Notes: Standard Hardware: AT504M Knurled Nut, AT508 Lockwasher, AT527M Hex Backup Nut. See Accessories & Hardware section.

Notes: Standard Hardware: AT504M Knurled Nut, AT508 Lockwasher, AT527M Hex Backup Nut. See Accessories & Hardware section.