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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 (USD) Filter the results in the table by unit price based on your quantity.	Qty.
Switch Hardware LPB ACTUATOR REC 51-165.0 EAO 1: $19.71 51In Stock	Mfr. Part # 51-165.0 Mouser Part # 123-51-165.0	EAO	Switch Hardware LPB ACTUATOR REC Learn More about EAO series 51 switches	Datasheet	51In Stock	$19.71 $19.70 $19.50 $19.12 View $18.99 Quote	Min.: 1 Mult.: 1
Keylock Switches KYLK RND MOM 3POS 51-378.AD EAO 1: $115.18 8In Stock	Mfr. Part # 51-378.AD Mouser Part # 123-51-378.AD	EAO	Keylock Switches KYLK RND MOM 3POS Learn More about EAO series 51 switches	Datasheet	8In Stock	$115.18 $99.32 $94.58 $89.50 View $85.59 Quote	Min.: 1 Mult.: 1
Switch Actuators LPB SQ MOM SLGP QC 51-151.022 EAO 1: $38.84 75In Stock	Mfr. Part # 51-151.022 Mouser Part # 123-51-151.022	EAO	Switch Actuators LPB SQ MOM SLGP QC Learn More about EAO series 51 switches	Datasheet	75In Stock	$38.84 Quote Quote	Min.: 1 Mult.: 1
Keylock Switches KYLK RND MNT 2POS 51-235.022D EAO 1: $75.61 61In Stock	Mfr. Part # 51-235.022D Mouser Part # 123-51-235.022D	EAO	Keylock Switches KYLK RND MNT 2POS Learn More about EAO series 51 switches	Datasheet	61In Stock	$75.61 $72.14 $70.03 Quote Quote	Min.: 1 Mult.: 1
Keylock Switches KYLK RND MNT 2POS 51-236.025D EAO 1: $85.50 29In Stock	Mfr. Part # 51-236.025D Mouser Part # 123-51-236.025D	EAO	Keylock Switches KYLK RND MNT 2POS Learn More about EAO series 51 switches	Datasheet	29In Stock	$85.50 $83.54 $81.94 $79.29 View Quote	Min.: 1 Mult.: 1
Switch Actuators STP SWTC W-ANTI TWIST RELEASE 2N.C 51-252.026 EAO 1: $40.02 75In Stock	Mfr. Part # 51-252.026 Mouser Part # 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	$40.02 $39.92 $38.73 $38.37 $38.36	Min.: 1 Mult.: 1
Keylock Switches KYLK SQ MNT 2POS 51-255.022D EAO 1: $75.61 34In Stock	Mfr. Part # 51-255.022D Mouser Part # 123-51-255.022D	EAO	Keylock Switches KYLK SQ MNT 2POS Learn More about EAO series 51 switches	Datasheet	34In Stock	$75.61 $73.08 $72.58 $70.68 View Quote	Min.: 1 Mult.: 1
Keylock Switches KYLK RND MNT 2POS 51-235.025D EAO 1: $69.30 47In Stock 32Expected 12/11/2026	Mfr. Part # 51-235.025D Mouser Part # 123-51-235.025D	EAO	Keylock Switches KYLK RND MNT 2POS Learn More about EAO series 51 switches	Datasheet	47In Stock 32Expected 12/11/2026	$69.30 $69.13 $67.03 $66.11 View $64.31 Quote	Min.: 1 Mult.: 1
Switch Cases / Switch Covers protect COVER-REC 51-925 EAO 1: $8.81 852In Stock	Mfr. Part # 51-925 Mouser Part # 123-51-925	EAO	Switch Cases / Switch Covers protect COVER-REC Learn More about EAO series 51 switches	Datasheet	852In Stock	$8.81 $8.08 $7.44 $7.20 View $6.86 $6.44 $6.30 $6.23 Quote	Min.: 1 Mult.: 1
Panel Mount Indicator Housings & Hardware IND REC BLK SLDR 51-040.005 EAO 1: $11.74 41In Stock	Mfr. Part # 51-040.005 Mouser Part # 123-51-040.005	EAO	Panel Mount Indicator Housings & Hardware IND REC BLK SLDR Learn More about EAO series 51 switches	Datasheet	41In Stock	$11.74 $11.72 $11.15 $10.96 View Quote	Min.: 1 Mult.: 1
Switch Actuators LPB REC MOM SLGP QC 51-121.022 EAO 1: $38.84 21In Stock 16Expected 10/19/2026	Mfr. Part # 51-121.022 Mouser Part # 123-51-121.022	EAO	Switch Actuators LPB REC MOM SLGP QC Learn More about EAO series 51 switches	Datasheet	21In Stock 16Expected 10/19/2026	$38.84 $38.35 $37.81 $37.17 View Quote	Min.: 1 Mult.: 1
Pushbutton Switches - Industrial LPB REC MOM SLGP SLDR 51-121.025 EAO 1: $34.85 17In Stock	Mfr. Part # 51-121.025 Mouser Part # 123-51-121.025	EAO	Pushbutton Switches - Industrial LPB REC MOM SLGP SLDR Learn More about EAO series 51 switches	Datasheet	17In Stock	$34.85 $34.47 $33.49 $31.29 $30.75	Min.: 1 Mult.: 1
Switch Actuators LPB SQ MOM SLGP SLDR 51-151.025 EAO 1: $36.01 11In Stock	Mfr. Part # 51-151.025 Mouser Part # 123-51-151.025	EAO	Switch Actuators LPB SQ MOM SLGP SLDR Learn More about EAO series 51 switches	Datasheet	11In Stock	$36.01 $35.12 View Quote	Min.: 1 Mult.: 1
Switch Actuators STP SWTC W-ANTI TWIST RELEASE 1N.C 51-256.026 EAO 1: $33.75 14In Stock	Mfr. Part # 51-256.026 Mouser Part # 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	$33.75 $33.34 $32.97 $30.35 $29.78	Min.: 1 Mult.: 1
Switch Actuators LPB REC MNT SLGP QC 51-261.022 EAO 1: $44.62 4In Stock	Mfr. Part # 51-261.022 Mouser Part # 123-51-261.022	EAO	Switch Actuators LPB REC MNT SLGP QC Learn More about EAO series 51 switches	Datasheet	4In Stock	$44.62 $44.61 $43.52 View Quote	Min.: 1 Mult.: 1
Pushbutton Switches - Industrial LPB REC MNT SLGP SLDR 51-261.025 EAO 1: $38.31 4In Stock	Mfr. Part # 51-261.025 Mouser Part # 123-51-261.025	EAO	Pushbutton Switches - Industrial LPB REC MNT SLGP SLDR Learn More about EAO series 51 switches	Datasheet	4In Stock	$38.31 $38.30 $37.32 $36.53 View $35.20 Quote	Min.: 1 Mult.: 1
Switch Actuators LPB REC MNT SLGP SLDR 51-262.025 EAO 1: $53.50 Non-Stocked Lead-Time 2 Weeks	Mfr. Part # 51-262.025 Mouser Part # 123-51-262.025	EAO	Switch Actuators LPB REC MNT SLGP SLDR Learn More about EAO series 51 switches	Datasheet	Non-Stocked Lead-Time 2 Weeks	$53.50 $52.38 $51.27 $50.19 View Quote	Min.: 1 Mult.: 1
Switch Actuators LPB SQ MNT SLGP SLDR 51-281.025 EAO 1: $45.97 3In Stock	Mfr. Part # 51-281.025 Mouser Part # 123-51-281.025	EAO	Switch Actuators LPB SQ MNT SLGP SLDR Learn More about EAO series 51 switches	Datasheet	3In Stock	$45.97 $38.31 $37.32 $36.52 View $35.80 Quote	Min.: 1 Mult.: 1
Keylock Switches KYLK RND MNT 2POS 51-135.025D EAO 1: $79.28 2In Stock	Mfr. Part # 51-135.025D Mouser Part # 123-51-135.025D	EAO	Keylock Switches KYLK RND MNT 2POS Learn More about EAO series 51 switches	Datasheet	2In Stock	$79.28 $79.27 $77.46 $75.98 View $73.53 Quote	Min.: 1 Mult.: 1
Keylock Switches KYLK REC MNT 2POS 51-195.022D EAO 1: $75.61 10In Stock	Mfr. Part # 51-195.022D Mouser Part # 123-51-195.022D	EAO	Keylock Switches KYLK REC MNT 2POS Learn More about EAO series 51 switches	Datasheet	10In Stock	$75.61 $74.26 View Quote	Min.: 1 Mult.: 1
Switch Actuators LPB REC MOM GD UNV LL 51-421.036 EAO 1: $38.27 34In Stock	Mfr. Part # 51-421.036 Mouser Part # 123-51-421.036	EAO	Switch Actuators LPB REC MOM GD UNV LL Learn More about EAO series 51 switches	Datasheet	34In Stock	$38.27 $38.26	Min.: 1 Mult.: 1
Switch Actuators LPB REC MOM GD UNV LL 51-423.036 EAO 1: $38.27 1In Stock	Mfr. Part # 51-423.036 Mouser Part # 123-51-423.036	EAO	Switch Actuators LPB REC MOM GD UNV LL Learn More about EAO series 51 switches	Datasheet	1In Stock	$38.27 $37.29 $36.22 $35.49 Quote Quote	Min.: 1 Mult.: 1
Switch Actuators LPB REC MOM GD UNV LL 51-425.036 EAO 1: $24.56 17In Stock	Mfr. Part # 51-425.036 Mouser Part # 123-51-425.036	EAO	Switch Actuators LPB REC MOM GD UNV LL Learn More about EAO series 51 switches	Datasheet	17In Stock	$24.56 $24.12 $23.60 $22.96 Quote Quote	Min.: 1 Mult.: 1
Switch Bezels / Switch Caps LENS REC FLT TLT WHT 51-901.9 EAO 1: $3.35 143In Stock 141On Order	Mfr. Part # 51-901.9 Mouser Part # 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. #: 51-901.9 Stock: 143 Can Ship Immediately On Order: 110 Expected 10/16/2026 31 Expected 10/19/2026 Factory Lead-Time: 15 Weeks	$3.35 $3.34	Min.: 1 Mult.: 1
Switch Bezels / Switch Caps LENS REC FLT TPT RED 51-903.2 EAO 1: $3.35 107In Stock	Mfr. Part # 51-903.2 Mouser Part # 123-51-903.2	EAO	Switch Bezels / Switch Caps LENS REC FLT TPT RED Learn More about EAO series 51 switches	Datasheet	107In Stock	$3.35 $3.31 $3.24	Min.: 1 Mult.: 1

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Series 51 Switch Range

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Series 51 Switch Range

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