Special Function Rotary Switches
SERIES 08,09,42,44,50
Spring Return
FEATURES
• Hold-To-Test, Hold-To-Calibrate,
And Other Momentary Applications
• Choice of Configurations, Ratings,
Styles and Circuitry
• 10,000 Cycles of Operation
DESCRIPTION
A spring return rotary switch has 1 or more momentary positions. Maintaining contact at momentary
positions requires rotational force. Releasing the force allows the mechanism to return the contact
to a normal, or detent, position.
DIMENSIONS
Series 08 & 09
Series 50
Equivalent to Series 50 Standard Switches
.500 .015
(12,7 0,38)
DIA.
DIM. A + .046 (1,17)
–.020 (0,51)
DIM. B REF.
STUD PROJECTION
.320 .015 (8,13 0,38)
CIRCLE OF CENTERS
For all other dimensions and
specifications, see Standard
Switch pages.
COMMON
36°
3°
No. of
Decks
Dim
A
Dim
B
Series 42 & 44
DIM. A + .046 (1,17)
–.020 (0,51)
No. of
Decks
Dim.
A
1
2
3
4
5
6
.960 (24,38) .062 (1,57)
1.228 (31,19) .062 (1,57)
1.496 (38,0)
1.764 (44,81) .062 (1,57)
2.032 (51,61) .062 (1,57)
2.550 (64,77) .312 (7,92)
.062 (1,57)
1
2
3
1.025 (26,04)
1.371 (34,82)
1.717 (43,61)
For all other dimensions and
specifications, see Standard
Switch pages.
For all other dimensions and
specifications, see Standard
Switch pages.
CONFIGURATIONS
SELECTING A SWITCH
OPTIONS
This configuration indicates a counterclockwise
force is required to hold the switch at position
#1. “M” indicates a momentary position
counterclockwiseof“D”and"D", detentedones.
1. Select a Configuration: The total number of
positions always includes the 2 basic positions.
A (4) position switch of DDDDM configuration
wouldhave3detentpositionscounterclockwise
of the momentary position.
Watertight panel seal; Multi-pole switches that
exceed the limits noted in the Selector Chart;
Series 50 MD or DM configurations in Military
styles; Series 08, 09, & 44 in MMMDMMM, and
in MMDDMM, and in MMMMMD.
Positions
1
2
3
M
D
D
Not available through Distributors
2. Select Series, Angle of Throw, and Style:
See the Choices Chart. The basic switch
description, series, and throw are as follows:
Releasingthisforcebreakscontactwithposition
#1 and returns the switch to #2. Normal rotary
switch detent action occurs when the switch is
rotated between position #2 and #3.
ORDERING INFORMATION
Create the part number using this example.
1/2", 1/4 Amp, multi-deck
1", 1 Amp, multi-deck
08 = 36° 09 = 30°
42 = 36° 44 = 30°
All of the configurations (except MDM) list a
basic 2 position arrangement which is shown in
italics.Example:MDDDDDorDDDDDM.Several
positions can be added during the switch
constructionatthefactory;but,anyconfiguration
must always contain the 2 basic positions.
1/2", 200 mA, single deck 50 = 36°
Stem number from chart
(4 or 5 digits)
Number of Decks
Electrical ratings are the same as those of the
conventional switches with the exception of life.
Life is limited to 10,000 cycles of operation
(25,000 cycles for Series 50) due to the spring
arrangement. Dimensions are the same as for
conventional types except for the shaft flat
orientation of the 3, 4, 5, and 6 pole, Series 09
and 44 in the DDDDDM configuration (see
chart).
Number of Poles/Deck
093103-2-045
Type of Contacts:
S=Shorting
N=Non-Shorting
Number of Positions/Pole
3. Select Poles & Positions Per Pole: If you
do not find the poles and positions per pole you
need in one series, try another or contact the
factory. If the behind panel length is a problem,
select a multi-pole type instead of a single deck.
Exception: Numbers beginning with 5 are
already complete part numbers.
Grayhill, Inc.
• 561 Hillgrove Avenue • LaGrange, Illinois 60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com
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