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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: HK$946.78
7In Stock

Mfr. Part No.
51-378.AD

Mouser Part No
123-51-378.AD

EAO

Keylock Switches KYLK RND MOM 3POS

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Datasheet

7In Stock

HK$946.78

HK$816.41

HK$777.45

HK$735.69

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Min.: 1
Mult.: 1

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

51-252.026
EAO
1: HK$328.96
89In Stock

Mfr. Part No.
51-252.026

Mouser Part No
123-51-252.026

EAO

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

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Datasheet

89In Stock

HK$328.96

HK$321.32

HK$319.10

Min.: 1
Mult.: 1

Keylock Switches KYLK SQ MNT 2POS

51-255.022D
EAO
1: HK$606.23
37In Stock

Mfr. Part No.
51-255.022D

Mouser Part No
123-51-255.022D

EAO

Keylock Switches KYLK SQ MNT 2POS

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Datasheet

37In Stock

HK$606.23

HK$569.56

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Min.: 1
Mult.: 1

Keylock Switches KYLK RND MNT 2POS

51-235.025D
EAO
1: HK$569.65
76In Stock
22Expected 10/8/2026

Mfr. Part No.
51-235.025D

Mouser Part No
123-51-235.025D

EAO

Keylock Switches KYLK RND MNT 2POS

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Datasheet

76In Stock

22Expected 10/8/2026

HK$569.65

HK$555.67

HK$552.96

HK$541.78

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Min.: 1
Mult.: 1

Panel Mount Indicator Housings & Hardware IND REC BLK QC

51-040.002
EAO
1: HK$96.50
27In Stock
25Expected 10/8/2026

Mfr. Part No.
51-040.002

Mouser Part No
123-51-040.002

EAO

Panel Mount Indicator Housings & Hardware IND REC BLK QC

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Datasheet

27In Stock

25Expected 10/8/2026

HK$96.50

HK$94.20

HK$89.68

HK$88.20

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Min.: 1
Mult.: 1

Panel Mount Indicator Housings & Hardware IND REC BLK SLDR

51-040.005
EAO
1: HK$96.50
3In Stock
38On Order

Mfr. Part No.
51-040.005

Mouser Part No
123-51-040.005

EAO

Panel Mount Indicator Housings & Hardware IND REC BLK SLDR

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Datasheet

3In Stock

38On Order

HK$96.50

HK$94.20

HK$89.68

HK$88.20

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Min.: 1
Mult.: 1

Switch Actuators LPB REC MOM SLGP QC

51-121.022
EAO
1: HK$339.81
26In Stock

Mfr. Part No.
51-121.022

Mouser Part No
123-51-121.022

EAO

Switch Actuators LPB REC MOM SLGP QC

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Datasheet

26In Stock

HK$339.81

HK$312.69

HK$312.20

HK$306.36

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Min.: 1
Mult.: 1

Pushbutton Switches - Industrial LPB REC MOM SLGP SLDR

51-121.025
EAO
1: HK$286.47
17In Stock

Mfr. Part No.
51-121.025

Mouser Part No
123-51-121.025

EAO

Pushbutton Switches - Industrial LPB REC MOM SLGP SLDR

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Datasheet

17In Stock

HK$286.47

HK$286.38

HK$279.89

HK$254.08

HK$252.77

Min.: 1
Mult.: 1

Pushbutton Switches - Industrial LPB REC MOM SLGP SLDR

51-122.025
EAO
1: HK$412.64
2In Stock

Mfr. Part No.
51-122.025

Mouser Part No
123-51-122.025

EAO

Pushbutton Switches - Industrial LPB REC MOM SLGP SLDR

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Datasheet

2In Stock

HK$412.64

HK$402.12

HK$393.49

HK$379.19

Quote

Min.: 1
Mult.: 1

Switch Actuators LPB RND MOM SLGP SLDR

51-131.025
EAO
1: HK$286.47
9In Stock

Mfr. Part No.
51-131.025

Mouser Part No
123-51-131.025

EAO

Switch Actuators LPB RND MOM SLGP SLDR

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Datasheet

9In Stock

HK$286.47

HK$284.66

HK$278.99

Quote

Min.: 1
Mult.: 1

Keylock Switches KYLK RND MNT 2POS

51-135.025D
EAO
1: HK$651.68
2In Stock

Mfr. Part No.
51-135.025D

Mouser Part No
123-51-135.025D

EAO

Keylock Switches KYLK RND MNT 2POS

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Datasheet

2In Stock

HK$651.68

HK$651.60

Min.: 1
Mult.: 1

Switch Actuators LPB SQ MOM SLGP SLDR

51-151.025
EAO
1: HK$296.00
11In Stock

Mfr. Part No.
51-151.025

Mouser Part No
123-51-151.025

EAO

Switch Actuators LPB SQ MOM SLGP SLDR

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Datasheet

11In Stock

HK$296.00

HK$295.92

HK$289.59

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Min.: 1
Mult.: 1

Switch Fixings LPB ACTUATOR REC

51-165.0
EAO
1: HK$162.02
51In Stock

Mfr. Part No.
51-165.0

Mouser Part No
123-51-165.0

EAO

Switch Fixings LPB ACTUATOR REC

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Datasheet

51In Stock

HK$162.02

HK$161.93

HK$158.97

HK$153.39

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Min.: 1
Mult.: 1

Keylock Switches KYLK RND MNT 2POS

51-235.022D
EAO
1: HK$710.54
15In Stock
46On Order

Mfr. Part No.
51-235.022D

Mouser Part No
123-51-235.022D

EAO

Keylock Switches KYLK RND MNT 2POS

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Datasheet

15In Stock

46On Order

HK$710.54

HK$635.57

HK$607.21

HK$595.62

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Min.: 1
Mult.: 1

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

51-256.026
EAO
1: HK$277.43
20In Stock

Mfr. Part No.
51-256.026

Mouser Part No
123-51-256.026

EAO

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

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Datasheet

20In Stock

HK$277.43

HK$272.82

HK$272.08

HK$271.01

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Min.: 1
Mult.: 1

Pushbutton Switches - Industrial LPB REC MNT SLGP SLDR

51-261.025
EAO
1: HK$314.91
5In Stock

Mfr. Part No.
51-261.025

Mouser Part No
123-51-261.025

EAO

Pushbutton Switches - Industrial LPB REC MNT SLGP SLDR

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Datasheet

5In Stock

HK$314.91

HK$307.59

HK$301.67

HK$291.97

Quote

Min.: 1
Mult.: 1

Switch Actuators LPB REC MNT SLGP SLDR

51-262.025
EAO
1: HK$439.77
5In Stock

Mfr. Part No.
51-262.025

Mouser Part No
123-51-262.025

EAO

Switch Actuators LPB REC MNT SLGP SLDR

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Datasheet

5In Stock

HK$439.77

HK$430.56

HK$421.44

HK$412.56

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Min.: 1
Mult.: 1

Switch Actuators LPB SQ MNT SLGP SLDR

51-281.025
EAO
1: HK$377.87
3In Stock

Mfr. Part No.
51-281.025

Mouser Part No
123-51-281.025

EAO

Switch Actuators LPB SQ MNT SLGP SLDR

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Datasheet

3In Stock

HK$377.87

HK$314.91

HK$306.77

HK$300.19

View

Min.: 1
Mult.: 1

Keylock Switches KYLK REC MNT 2POS

51-195.022D
EAO
1: HK$621.51
10In Stock

Mfr. Part No.
51-195.022D

Mouser Part No
123-51-195.022D

EAO

Keylock Switches KYLK REC MNT 2POS

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Datasheet

10In Stock

HK$621.51

Quote

Min.: 1
Mult.: 1

Switch Actuators LPB REC MOM GD UNV LL

51-421.036
EAO
1: HK$314.58
12In Stock
22Expected 31/8/2026

Mfr. Part No.
51-421.036

Mouser Part No
123-51-421.036

EAO

Switch Actuators LPB REC MOM GD UNV LL

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Datasheet

12In Stock

22Expected 31/8/2026

HK$314.58

HK$314.50

HK$308.99

Min.: 1
Mult.: 1

Switch Actuators LPB REC MOM GD UNV LL

51-423.036
EAO
1: HK$314.58
1In Stock

Mfr. Part No.
51-423.036

Mouser Part No
123-51-423.036

EAO

Switch Actuators LPB REC MOM GD UNV LL

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Datasheet

1In Stock

HK$314.58

HK$306.52

HK$297.73

HK$291.73

Quote

Min.: 1
Mult.: 1

Switch Actuators LPB REC MOM GD UNV LL

51-425.036
EAO
1: HK$201.88
17In Stock

Mfr. Part No.
51-425.036

Mouser Part No
123-51-425.036

EAO

Switch Actuators LPB REC MOM GD UNV LL

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Datasheet

17In Stock

HK$201.88

HK$198.27

HK$193.99

HK$188.73

Quote

Min.: 1
Mult.: 1

Switch Bezels / Switch Caps LENS REC FLT TLT WHT

51-901.9
EAO
1: HK$27.54
209In Stock

Mfr. Part No.
51-901.9

Mouser Part No
123-51-901.9

EAO

Switch Bezels / Switch Caps LENS REC FLT TLT WHT

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Datasheet

209In Stock

HK$27.54

HK$27.45

HK$26.47

HK$25.65

Min.: 1
Mult.: 1

Switch Bezels / Switch Caps LENS REC FLT TPT RED

51-903.2
EAO
1: HK$27.54
120In Stock

Mfr. Part No.
51-903.2

Mouser Part No
123-51-903.2

EAO

Switch Bezels / Switch Caps LENS REC FLT TPT RED

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Datasheet

120In Stock

HK$27.54

HK$27.45

Min.: 1
Mult.: 1

Switch Bezels / Switch Caps LENS RECT ORANGE TPT ORNG

51-903.3
EAO
1: HK$27.54
48In Stock

Mfr. Part No.
51-903.3

Mouser Part No
123-51-903.3

EAO

Switch Bezels / Switch Caps LENS RECT ORANGE TPT ORNG

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Datasheet

48In Stock

HK$27.54

Min.: 1
Mult.: 1

Series 51 Switch Range

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Series 51 Switch Range

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