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Series 51 Switch Range

EAO Series 51 Switch Range is an oil and watertight, high-quality switch range that includes pushbuttons, indicators, illuminated selector switches, key locks, and "mono-block" stop switches. It is possible to choose up to 4NO/4NC snap-action switching elements per switch and low-level switching elements are also available. Both standard panel-mount (16mm cut-out) and flush-mount (22.5mm cut-out) styles are available from EAO.

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Part #

Keylock Switches KYLK RND MOM 3POS

51-378.AD
EAO
1: $121.134
7In Stock

Mfr. Part #
51-378.AD

Mouser Part #
123-51-378.AD

EAO

Keylock Switches KYLK RND MOM 3POS

Datasheet

7In Stock

$121.134

$104.454

$99.469

$94.126

View

Min.: 1
Mult.: 1

Switch Actuators STP SWTC W-ANTI TWIST RELEASE 2N.C

51-252.026
EAO
1: $42.089
89In Stock

Mfr. Part #
51-252.026

Mouser Part #
123-51-252.026

EAO

Switch Actuators STP SWTC W-ANTI TWIST RELEASE 2N.C

Datasheet

89In Stock

$42.089

$41.111

$40.827

Min.: 1
Mult.: 1

Keylock Switches KYLK SQ MNT 2POS

51-255.022D
EAO
1: $77.562
13In Stock
24Expected 7/29/2026

Mfr. Part #
51-255.022D

Mouser Part #
123-51-255.022D

EAO

Keylock Switches KYLK SQ MNT 2POS

Datasheet

13In Stock

24Expected 7/29/2026

$77.562

$72.872

View

Min.: 1
Mult.: 1

Keylock Switches KYLK RND MNT 2POS

51-235.025D
EAO
1: $72.882
76In Stock
22Expected 9/11/2026

Mfr. Part #
51-235.025D

Mouser Part #
123-51-235.025D

EAO

Keylock Switches KYLK RND MNT 2POS

Datasheet

76In Stock

22Expected 9/11/2026

$72.882

$71.094

$70.747

$69.317

View

Min.: 1
Mult.: 1

Panel Mount Indicator Housings & Hardware IND REC BLK QC

51-040.002
EAO
1: $12.347
27In Stock
25Expected 8/17/2026

Mfr. Part #
51-040.002

Mouser Part #
123-51-040.002

EAO

Panel Mount Indicator Housings & Hardware IND REC BLK QC

Datasheet

27In Stock

25Expected 8/17/2026

$12.347

$12.052

$11.474

$11.285

View

Min.: 1
Mult.: 1

Panel Mount Indicator Housings & Hardware IND REC BLK SLDR

51-040.005
EAO
1: $12.347
3In Stock
38Expected 7/27/2026

Mfr. Part #
51-040.005

Mouser Part #
123-51-040.005

EAO

Panel Mount Indicator Housings & Hardware IND REC BLK SLDR

Datasheet

3In Stock

38Expected 7/27/2026

$12.347

$12.336

$12.305

$12.063

View

Min.: 1
Mult.: 1

Switch Actuators LPB REC MOM SLGP QC

51-121.022
EAO
1: $43.477
50In Stock

Mfr. Part #
51-121.022

Mouser Part #
123-51-121.022

EAO

Switch Actuators LPB REC MOM SLGP QC

Datasheet

50In Stock

$43.477

$40.006

$39.943

$39.196

View

Min.: 1
Mult.: 1

Pushbutton Switches - Industrial LPB REC MOM SLGP SLDR

51-121.025
EAO
1: $36.651
17In Stock

Mfr. Part #
51-121.025

Mouser Part #
123-51-121.025

EAO

Pushbutton Switches - Industrial LPB REC MOM SLGP SLDR

Datasheet

17In Stock

$36.651

$36.641

$35.810

$32.508

$32.339

Min.: 1
Mult.: 1

Pushbutton Switches - Industrial LPB REC MOM SLGP SLDR

51-122.025
EAO
1: $52.795
2In Stock

Mfr. Part #
51-122.025

Mouser Part #
123-51-122.025

EAO

Pushbutton Switches - Industrial LPB REC MOM SLGP SLDR

Datasheet

2In Stock

$52.795

$51.691

$50.597

$49.535

View

Min.: 1
Mult.: 1

Keylock Switches KYLK RND MNT 2POS

51-135.025D
EAO
1: $83.378
2In Stock

Mfr. Part #
51-135.025D

Mouser Part #
123-51-135.025D

EAO

Keylock Switches KYLK RND MNT 2POS

Datasheet

2In Stock

$83.378

$83.367

Min.: 1
Mult.: 1

Switch Actuators LPB SQ MOM SLGP SLDR

51-151.025
EAO
1: $37.871
11In Stock

Mfr. Part #
51-151.025

Mouser Part #
123-51-151.025

EAO

Switch Actuators LPB SQ MOM SLGP SLDR

Datasheet

11In Stock

$37.871

$37.861

$37.051

View

Min.: 1
Mult.: 1

Switch Hardware LPB ACTUATOR REC

51-165.0
EAO
1: $20.729
51In Stock

Mfr. Part #
51-165.0

Mouser Part #
123-51-165.0

EAO

Switch Hardware LPB ACTUATOR REC

Datasheet

51In Stock

$20.729

$20.718

$20.340

$19.625

View

Min.: 1
Mult.: 1

Keylock Switches KYLK RND MNT 2POS

51-235.022D
EAO
1: $81.117
19In Stock
46On Order

Mfr. Part #
51-235.022D

Mouser Part #
123-51-235.022D

EAO

Keylock Switches KYLK RND MNT 2POS

Datasheet

19In Stock

46On Order

$81.117

$78.267

Quote

Min.: 1
Mult.: 1

Switch Actuators STP SWTC W-ANTI TWIST RELEASE 1N.C

51-256.026
EAO
1: $35.495
22In Stock

Mfr. Part #
51-256.026

Mouser Part #
123-51-256.026

EAO

Switch Actuators STP SWTC W-ANTI TWIST RELEASE 1N.C

Datasheet

22In Stock

$35.495

$34.906

$34.811

$34.674

View

Min.: 1
Mult.: 1

Pushbutton Switches - Industrial LPB REC MNT SLGP SLDR

51-261.025
EAO
1: $40.290
5On Order

Mfr. Part #
51-261.025

Mouser Part #
123-51-261.025

EAO

Pushbutton Switches - Industrial LPB REC MNT SLGP SLDR

Datasheet

5On Order

$40.290

$39.354

$38.597

$37.356

Quote

Min.: 1
Mult.: 1

Switch Actuators LPB REC MNT SLGP SLDR

51-262.025
EAO
1: $56.265
5In Stock

Mfr. Part #
51-262.025

Mouser Part #
123-51-262.025

EAO

Switch Actuators LPB REC MNT SLGP SLDR

Datasheet

5In Stock

$56.265

$55.088

$53.920

$52.784

View

Min.: 1
Mult.: 1

Switch Actuators LPB SQ MNT SLGP SLDR

51-281.025
EAO
1: $48.346
3In Stock

Mfr. Part #
51-281.025

Mouser Part #
123-51-281.025

EAO

Switch Actuators LPB SQ MNT SLGP SLDR

Datasheet

3In Stock

$48.346

$40.290

$39.249

$38.408

View

Min.: 1
Mult.: 1

Keylock Switches KYLK REC MNT 2POS

51-195.022D
EAO
1: $79.518
10In Stock

Mfr. Part #
51-195.022D

Mouser Part #
123-51-195.022D

EAO

Keylock Switches KYLK REC MNT 2POS

Datasheet

10In Stock

$79.518

Quote

Min.: 1
Mult.: 1

Switch Actuators LPB REC MOM GD UNV LL

51-421.036
EAO
1: $40.248
20In Stock
22Expected 8/31/2026

Mfr. Part #
51-421.036

Mouser Part #
123-51-421.036

EAO

Switch Actuators LPB REC MOM GD UNV LL

Datasheet

20In Stock

22Expected 8/31/2026

$40.248

$39.870

Quote

Min.: 1
Mult.: 1

Switch Actuators LPB REC MOM GD UNV LL

51-423.036
EAO
1: $40.248
1In Stock

Mfr. Part #
51-423.036

Mouser Part #
123-51-423.036

EAO

Switch Actuators LPB REC MOM GD UNV LL

Datasheet

1In Stock

$40.248

$39.218

$38.092

$37.324

Quote

Min.: 1
Mult.: 1

Switch Actuators LPB REC MOM GD UNV LL

51-425.036
EAO
1: $25.830
17In Stock

Mfr. Part #
51-425.036

Mouser Part #
123-51-425.036

EAO

Switch Actuators LPB REC MOM GD UNV LL

Datasheet

17In Stock

$25.830

$25.819

Min.: 1
Mult.: 1

Switch Bezels / Switch Caps LENS REC FLT TLT WHT

51-901.9
EAO
1: $3.523
229In Stock

Mfr. Part #
51-901.9

Mouser Part #
123-51-901.9

EAO

Switch Bezels / Switch Caps LENS REC FLT TLT WHT

Datasheet

229In Stock

$3.523

$3.513

$3.386

$3.281

Min.: 1
Mult.: 1

Switch Bezels / Switch Caps LENS REC FLT TPT RED

51-903.2
EAO
1: $3.523
132In Stock

Mfr. Part #
51-903.2

Mouser Part #
123-51-903.2

EAO

Switch Bezels / Switch Caps LENS REC FLT TPT RED

Datasheet

132In Stock

$3.523

$3.513

Min.: 1
Mult.: 1

Switch Bezels / Switch Caps LENS RECT ORANGE TPT ORNG

51-903.3
EAO
1: $3.523
48In Stock

Mfr. Part #
51-903.3

Mouser Part #
123-51-903.3

EAO

Switch Bezels / Switch Caps LENS RECT ORANGE TPT ORNG

Datasheet

48In Stock

$3.523

Min.: 1
Mult.: 1

Switch Bezels / Switch Caps LENS REC FLT TPT YLW

51-903.4
EAO
1: $3.523
44In Stock

Mfr. Part #
51-903.4

Mouser Part #
123-51-903.4

EAO

Switch Bezels / Switch Caps LENS REC FLT TPT YLW

Datasheet

44In Stock

$3.523

$3.513

Min.: 1
Mult.: 1