Beckwith Electronics


824 Horan Drive, Fenton, Mo 63026
(636) 343-6463
(636) 343-7026 fax

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EAO Switch



Series 51/52
Subminiature Lighted Oil & Watertight Indicators and Pushbuttons (Series 51) and 2- and 3-Position Rotary Switches (series 52) with 16 mm Round Hole Mounting

Features:
250 VAC/5 A, 220 VDC/0.1 A, 24 VDC/2 A snap action, 42 VAC/0.1 A, 42 VDC/0.1A low level
Minimum depth: 1.14"
Sealed switches meet IP 65 and NEMA 4 and 13 specifications
Mount in panels to 0.255 inch thick


To order:
Series 51: first select pushbutton or indicator desired, indicating contact and terminal type where applicable. Then order lens and illumination separateky. If pushbutton with contact block is desired, order acutator, contact block, lens and illumination separately.
Series 52: order rotary switch indicatijg contact and terminal type where applicable, Then order lever cap and illumination.

Order Lamps Seperately.

Series 51 Lighted Pushbuttons
(Order lamp and lens separately)
Momentary
Switch Element Rectangular Square Round
Snap Action 1-pole Form Z 51-121.0 51-151.0 51-131.0
2-pole Form Z 51-122.05 51-152.05 51-132.05
3-pole Form Z 51-123.05 51-153.05 51-133.05
4-pole Form Z 51-124.05 51-154.05 51-134.05
Low Level 2 N.O. contacts 51-421.036 51-451.036 51-431.036
2 N.C. contacts 51-422.036 51-452.036 51-432.036
1 N.O., 1 N.C. contacts 51-423.036 51-453.036 51-433.036
1 N.O. contact 51-425.036 51-455.036 51-435.036
1 N.C. contact 51-426.036 51-456.036 51-436.036
Maintained
Switch Element Rectangular Square Round
Snap Action 1-pole Form Z 51-261.0 51-281.0 51-271.0
2-pole Form Z 51-262.05 51-282.05 51-272.05
3-pole Form Z 51-263.05 51-283.05 51-273.05
4-pole Form Z 51-264.05 51-284.05 51-274.05
Low Level 2 N.O. contacts 51-461.036 51-481.036 51-471.036
2 N.C. contacts 51-462.036 51-482.036 51-472.036
1 N.O., 1 N.C. contacts 51-463.036 51-483.036 51-473.036
1 N.O. contact 51-465.036 51-485.036 51-475.036
1 N.C. contact 51-466.036 51-486.036 51-476.036
Combined Momentary/Maintained
Switch Element Rectangular Square Round
Snap Action,
Form Z		 Momentary 1PDT and
Maintained 1PDT		 51-101.05 51-104.05 51-107.05
Momentary 1 PDT and
Maintained 2 PDT		 51-102.05 51-105.05 51-108.05
Momentary 2 PDT and
Maintained 1 PDT		 51-103.05 51-106.05 51-109.05
Lighted Indicators
Description Rectangular Square Round
Indicators FOR 0.110" Q.C.
terminals		 51-040.002 51-050.002 51-030.002
Solder terminals 51-040.005 51-050.005 51-030.005
Length matches low
level and universal
terminals		 51-041.006 51-050.006 51-031.006
Select contact and terminal type where applicable
.0
1st digit is always 0 (Case color is black)
Contact material (2nd digit): 1 = Silver, 2 = Gold over silver
Terminal type (3rd digit): 2 = 0.110" Q.C., 5 = Solder


Lenses
Add color digit
Description Rect. Square Round 0 1 2 3 4 5 6 7 8 9
Flat Lens Translucent 51-901. 51-951. 51-931. X   X X X X X   X X
Transparent 51-903. 51-953. 51-933.   X X X X X X X    
Transparent
with clear
diffuser		 51-905. 51-955. 51-935.     X   X X   X    
Concave Translucent 51-902. 51-952.   X   X X X X X   X X
Transparent 51-904. 51-954.       X X X X X X    
Transparent
with clear
diffuser		 51-906. 51-956.       X   X X   X    
0=Black, 1=Solar Black*, 2=Red, 3=Orange, 4=Yellow, 5=Green, 6=Blue
7= Clear, 8=Gray, 9= White. Black and Gray are opaque.
*Dead Front - Legend only visible when illuminated.




Series 51 Pushbuttons and Indicators
without Snap Action Contact Blocks
(Order lamp and lens separately)
Description Rectangular Square Round
Momentary pushbutton
actuator without
contact block		 51-165.0 51-185.0 51-175.0
Maintained pushbutton
actuator without
contact block		 51-265.0 51-285.0 51-275.0
Indicator without
element block		 51-042.0 51-052.0 51-032.0




Contact Block & Indicator Elements
Description Part Number Suffix Numbers
Contact Material Terminal Type
Element block for indicator 51-970.0 0 2
Contact block
with 1 pole		 51-971.0 2 2
Contact block
with 2 poles		 51-972.0 2 2








Series 52 Lighted Two-Position Rotary Switch
(Order lamp and lens separately)
Switch Elements Momentary
 Maintained
Snap Action 1-pole Form Z 52-131.0 52-271.0
2-pole Form Z 52-132.05 52-272.05
3-pole Form Z 52-133.05 52-273.05
4-pole Form Z 52-134.05 52-274.05
Low Level 2 N.O. contacts 52-431.036 52-471.036
2 N.C. contacts 52-431.036 52-472.036
1 N.O., 1 N.C. 52-433.036 52-473.036
1 N.O. contact 52-435.036 52-475.036
1 N.C. contact 52-436.036 52-476.036
Select contact and terminal type where applicable .0
1st digit is always 0 (Case color is black)
Contact material (2nd digit): 1 = Silver, 2 = Gold over Silver
Terminal type (3rd digit): 2 = 0.110" Q.C., 5 = Solder




Square Bezel Insert
(Order lamp and lens separately)
Description Part Number
To change round bezel to 24 x 24 mm 52-950.0
To cange round bezel to 26 x 26 mm 52-952.0




Lighted Three-Position
Rotary Switch
(Order lamp and lens separately)
Description
Position A - always maintained
with no operation of switch elements
Position B & C - operate independent SPDT switch element
 Part Number
Positions B,C - Maintained 52-571.022A
Position B,C - Momentary 52-572.022A
Position B - Momentary, Position C - Maintained 52-573.022A
Position B - Maintained, Position C - Momentary 52-574.022A




Lens Cap
Add color digit
Lens Cap with Translucent
Colored Window		 Part Number
Black Lens Cap Gray Lens Cap
with indicating dot 52-928. 52-929.
Select color of translucent window
0= Black, 2= Red, 3= Orange, 4= Yellow, 5= Green, 6= Blue, 8= Gray, 9= White.
Black and Gray are opaque. NOTE: Black lens cap not available with Gray window,
Gray lens cap not available with Black window.