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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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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (EUR) Filter the results in the table by unit price based on your quantity.	Qty.
Keylock Switches KYLK RND MOM 3POS 51-378.AD EAO 1: 124,39 € 8In Stock Restricted Availability	Mfr. Part No. 51-378.AD Mouser Part No 123-51-378.AD	EAO	Keylock Switches KYLK RND MOM 3POS Learn More about EAO series 51 switches	Datasheet	8In Stock	124,39 € 107,27 € 102,15 € 96,66 € View 92,44 € Quote	Min.: 1 Mult.: 1 Restricted Availability
Keylock Switches KYLK RND MNT 2POS 51-235.022D EAO 1: 81,66 € 61In Stock Restricted Availability	Mfr. Part No. 51-235.022D Mouser Part No 123-51-235.022D	EAO	Keylock Switches KYLK RND MNT 2POS Learn More about EAO series 51 switches	Datasheet	61In Stock	81,66 € 77,91 € 75,63 € Quote Quote	Min.: 1 Mult.: 1 Restricted Availability
Keylock Switches KYLK RND MNT 2POS 51-236.025D EAO 1: 92,34 € 29In Stock Restricted Availability	Mfr. Part No. 51-236.025D Mouser Part No 123-51-236.025D	EAO	Keylock Switches KYLK RND MNT 2POS Learn More about EAO series 51 switches	Datasheet	29In Stock	92,34 € 90,22 € 88,50 € 85,63 € View Quote	Min.: 1 Mult.: 1 Restricted Availability
Switch Actuators STP SWTC W-ANTI TWIST RELEASE 2N.C 51-252.026 EAO 1: 43,22 € 75In Stock Restricted Availability	Mfr. Part No. 51-252.026 Mouser Part No 123-51-252.026	EAO	Switch Actuators STP SWTC W-ANTI TWIST RELEASE 2N.C Learn More about EAO series 51 switches	Datasheet	75In Stock	43,22 € 43,11 € 41,83 € 41,44 € 41,43 €	Min.: 1 Mult.: 1 Restricted Availability
Keylock Switches KYLK SQ MNT 2POS 51-255.022D EAO 1: 81,66 € 34In Stock Restricted Availability	Mfr. Part No. 51-255.022D Mouser Part No 123-51-255.022D	EAO	Keylock Switches KYLK SQ MNT 2POS Learn More about EAO series 51 switches	Datasheet	34In Stock	81,66 € 78,93 € 78,39 € 76,33 € View Quote	Min.: 1 Mult.: 1 Restricted Availability
Keylock Switches KYLK RND MNT 2POS 51-235.025D EAO 1: 74,84 € 67In Stock Restricted Availability 32Expected 11/17/2026	Mfr. Part No. 51-235.025D Mouser Part No 123-51-235.025D	EAO	Keylock Switches KYLK RND MNT 2POS Learn More about EAO series 51 switches	Datasheet	67In Stock 32Expected 11/17/2026	74,84 € 74,66 € 72,39 € 71,40 € View 69,45 € Quote	Min.: 1 Mult.: 1 Restricted Availability
Switch Cases / Switch Covers protect COVER-REC 51-925 EAO 1: 9,51 € 365In Stock 529On Order	Mfr. Part No. 51-925 Mouser Part No 123-51-925	EAO	Switch Cases / Switch Covers protect COVER-REC Learn More about EAO series 51 switches	Datasheet	365In Stock 529On Order On Order Ship Dates Mfr. No: 51-925 Stock: 365 Can Dispatch Immediately On Order: 511 Pending 18 Expected 10/12/2026 Factory Lead Time: 15 Weeks	9,51 € 8,73 € 8,04 € 7,78 € View 7,41 € 6,96 € 6,80 € 6,73 € Quote	Min.: 1 Mult.: 1
Panel Mount Indicator Housings & Hardware IND REC BLK QC 51-040.002 EAO 1: 12,68 € 45In Stock Restricted Availability	Mfr. Part No. 51-040.002 Mouser Part No 123-51-040.002	EAO	Panel Mount Indicator Housings & Hardware IND REC BLK QC Learn More about EAO series 51 switches	Datasheet	45In Stock	12,68 € 12,66 € 11,88 € 11,53 € Quote Quote	Min.: 1 Mult.: 1 Restricted Availability
Panel Mount Indicator Housings & Hardware IND REC BLK SLDR 51-040.005 EAO 1: 12,68 € 41In Stock Restricted Availability	Mfr. Part No. 51-040.005 Mouser Part No 123-51-040.005	EAO	Panel Mount Indicator Housings & Hardware IND REC BLK SLDR Learn More about EAO series 51 switches	Datasheet	41In Stock	12,68 € 12,66 € 12,04 € 11,84 € View Quote	Min.: 1 Mult.: 1 Restricted Availability
Switch Actuators LPB REC MOM SLGP QC 51-121.022 EAO 1: 41,95 € 16In Stock Restricted Availability 21On Order	Mfr. Part No. 51-121.022 Mouser Part No 123-51-121.022	EAO	Switch Actuators LPB REC MOM SLGP QC Learn More about EAO series 51 switches	Datasheet	16In Stock 21On Order On Order Ship Dates Mfr. No: 51-121.022 Stock: 16 Can Dispatch Immediately On Order: 16 Expected 10/19/2026 5 Expected 10/23/2026 Factory Lead Time: 7 Weeks	41,95 € 41,42 € 40,83 € 40,14 € View Quote	Min.: 1 Mult.: 1 Restricted Availability
Pushbutton Switches - Industrial LPB REC MOM SLGP SLDR 51-121.025 EAO 1: 37,64 € 17In Stock Restricted Availability	Mfr. Part No. 51-121.025 Mouser Part No 123-51-121.025	EAO	Pushbutton Switches - Industrial LPB REC MOM SLGP SLDR Learn More about EAO series 51 switches	Datasheet	17In Stock	37,64 € 37,23 € 36,17 € 33,79 € 33,21 €	Min.: 1 Mult.: 1 Restricted Availability
Pushbutton Switches - Industrial LPB REC MOM SLGP SLDR 51-122.025 EAO 1: 54,22 € 2In Stock Restricted Availability	Mfr. Part No. 51-122.025 Mouser Part No 123-51-122.025	EAO	Pushbutton Switches - Industrial LPB REC MOM SLGP SLDR Learn More about EAO series 51 switches	Datasheet	2In Stock	54,22 € 52,83 € 51,70 € View Quote	Min.: 1 Mult.: 1 Restricted Availability
Switch Actuators LPB SQ MOM SLGP SLDR 51-151.025 EAO 1: 38,89 € 11In Stock Restricted Availability	Mfr. Part No. 51-151.025 Mouser Part No 123-51-151.025	EAO	Switch Actuators LPB SQ MOM SLGP SLDR Learn More about EAO series 51 switches	Datasheet	11In Stock	38,89 € 37,93 € View Quote	Min.: 1 Mult.: 1 Restricted Availability
Switch Fixings LPB ACTUATOR REC 51-165.0 EAO 1: 21,29 € 51In Stock Restricted Availability	Mfr. Part No. 51-165.0 Mouser Part No 123-51-165.0	EAO	Switch Fixings LPB ACTUATOR REC Learn More about EAO series 51 switches	Datasheet	51In Stock	21,29 € 21,28 € 20,89 € 20,15 € View 19,89 € Quote	Min.: 1 Mult.: 1 Restricted Availability
Switch Actuators STP SWTC W-ANTI TWIST RELEASE 1N.C 51-256.026 EAO 1: 36,45 € 14In Stock Restricted Availability	Mfr. Part No. 51-256.026 Mouser Part No 123-51-256.026	EAO	Switch Actuators STP SWTC W-ANTI TWIST RELEASE 1N.C Learn More about EAO series 51 switches	Datasheet	14In Stock	36,45 € 36,01 € 35,61 € 32,78 € 32,16 €	Min.: 1 Mult.: 1 Restricted Availability
Switch Actuators LPB REC MNT SLGP QC 51-261.022 EAO 1: 48,19 € 4In Stock Restricted Availability	Mfr. Part No. 51-261.022 Mouser Part No 123-51-261.022	EAO	Switch Actuators LPB REC MNT SLGP QC Learn More about EAO series 51 switches	Datasheet	4In Stock	48,19 € 48,18 € 47,00 € View Quote	Min.: 1 Mult.: 1 Restricted Availability
Pushbutton Switches - Industrial LPB REC MNT SLGP SLDR 51-261.025 EAO 1: 41,37 € 4In Stock Restricted Availability	Mfr. Part No. 51-261.025 Mouser Part No 123-51-261.025	EAO	Pushbutton Switches - Industrial LPB REC MNT SLGP SLDR Learn More about EAO series 51 switches	Datasheet	4In Stock	41,37 € 41,36 € 40,31 € 39,45 € View 38,02 € Quote	Min.: 1 Mult.: 1 Restricted Availability
Switch Actuators LPB REC MNT SLGP SLDR 51-262.025 EAO 1: 57,78 € 4In Stock Restricted Availability	Mfr. Part No. 51-262.025 Mouser Part No 123-51-262.025	EAO	Switch Actuators LPB REC MNT SLGP SLDR Learn More about EAO series 51 switches	Datasheet	4In Stock	57,78 € 56,57 € 55,37 € 54,21 € View Quote	Min.: 1 Mult.: 1 Restricted Availability
Switch Actuators LPB SQ MNT SLGP SLDR 51-281.025 EAO 1: 49,65 € 3In Stock Restricted Availability	Mfr. Part No. 51-281.025 Mouser Part No 123-51-281.025	EAO	Switch Actuators LPB SQ MNT SLGP SLDR Learn More about EAO series 51 switches	Datasheet	3In Stock	49,65 € 41,37 € 40,31 € 39,44 € View 38,66 € Quote	Min.: 1 Mult.: 1 Restricted Availability
Keylock Switches KYLK RND MNT 2POS 51-135.025D EAO 1: 85,62 € 2In Stock Restricted Availability	Mfr. Part No. 51-135.025D Mouser Part No 123-51-135.025D	EAO	Keylock Switches KYLK RND MNT 2POS Learn More about EAO series 51 switches	Datasheet	2In Stock	85,62 € 85,61 € 83,66 € 82,06 € View 79,41 € Quote	Min.: 1 Mult.: 1 Restricted Availability
Keylock Switches KYLK REC MNT 2POS 51-195.022D EAO 1: 81,66 € 10In Stock Restricted Availability	Mfr. Part No. 51-195.022D Mouser Part No 123-51-195.022D	EAO	Keylock Switches KYLK REC MNT 2POS Learn More about EAO series 51 switches	Datasheet	10In Stock	81,66 € 80,20 € View Quote	Min.: 1 Mult.: 1 Restricted Availability
Switch Actuators LPB REC MOM GD UNV LL 51-421.036 EAO 1: 41,33 € 34In Stock Restricted Availability	Mfr. Part No. 51-421.036 Mouser Part No 123-51-421.036	EAO	Switch Actuators LPB REC MOM GD UNV LL Learn More about EAO series 51 switches	Datasheet	34In Stock	41,33 € 41,32 €	Min.: 1 Mult.: 1 Restricted Availability
Switch Actuators LPB REC MOM GD UNV LL 51-423.036 EAO 1: 41,33 € 1In Stock Restricted Availability	Mfr. Part No. 51-423.036 Mouser Part No 123-51-423.036	EAO	Switch Actuators LPB REC MOM GD UNV LL Learn More about EAO series 51 switches	Datasheet	1In Stock	41,33 € 40,27 € 39,12 € 38,33 € Quote Quote	Min.: 1 Mult.: 1 Restricted Availability
Switch Actuators LPB REC MOM GD UNV LL 51-425.036 EAO 1: 26,52 € 17In Stock Restricted Availability	Mfr. Part No. 51-425.036 Mouser Part No 123-51-425.036	EAO	Switch Actuators LPB REC MOM GD UNV LL Learn More about EAO series 51 switches	Datasheet	17In Stock	26,52 € 26,05 € 25,49 € 24,80 € Quote Quote	Min.: 1 Mult.: 1 Restricted Availability
Switch Bezels / Switch Caps LENS REC FLT TLT WHT 51-901.9 EAO 1: 3,62 € 143In Stock Restricted Availability 141On Order	Mfr. Part No. 51-901.9 Mouser Part No 123-51-901.9	EAO	Switch Bezels / Switch Caps LENS REC FLT TLT WHT Learn More about EAO series 51 switches	Datasheet	143In Stock 141On Order On Order Ship Dates Mfr. No: 51-901.9 Stock: 143 Can Dispatch Immediately On Order: 110 Expected 10/16/2026 31 Expected 10/19/2026 Factory Lead Time: 15 Weeks	3,62 € 3,61 €	Min.: 1 Mult.: 1 Restricted Availability

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Series 51 Switch Range

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Series 51 Switch Range

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