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
DIM. A + .046 (1,17)
–.020 (0,51)
DIM. B REF.
STUD PROJECTION
Series 50
Equivalent to Series 50 Standard Switches
.500 ± .015
(12,7 ± 0,38)
DIA.
.320 ± .015 (8,13 ± 0,38)
CIRCLE OF CENTERS
COMMON
36°
± 3°
For all other dimensions and
Switch pages.
No. of
Decks
1
2
3
4
5
6
Dim
A
.960
1.228
1.496
1.764
2.032
2.550
(24,38)
(31,19)
(38,0)
(44,81)
(51,61)
(64,77)
Dim
B
.062
.062
.062
.062
.062
.312
(1,57)
(1,57)
(1,57)
(1,57)
(1,57)
(7,92)
Series 42 & 44
DIM. A + .046 (1,17)
–.020 (0,51)
Rotary Switches
No. of
Decks
1
2
3
Dim.
A
1.025 (26,04)
1.371 (34,82)
1.717 (43,61)
For all other dimensions and
Switch pages.
For all other dimensions and
Switch pages.
CONFIGURATIONS
This configuration indicates a counterclockwise
force is required to hold the switch at position
#1. “M” indicates a momentary position
counterclockwise of “D” and "D", detented ones.
Positions
1
2
3
M D
D
Releasing this force breaks contact with position
#1 and returns the switch to #2. Normal rotary
switch detent action occurs when the switch is
rotated between position #2 and #3.
All of the configurations (except
MDM)
list a
basic 2 position arrangement which is shown in
italics. Example:
MDDDDD
or DDDDDM. Several
positions can be added during the switch
construction at the factory; but, any configuration
must always contain the 2 basic positions.
SELECTING A SWITCH
1. Select a Configuration:
The total number of
positions always includes the 2 basic positions.
A (4) position switch of DDDDM configuration
would have 3 detent positions counterclockwise
of the momentary position.
2. Select Series, Angle of Throw, and Style:
See the Choices Chart. The basic switch
description, series, and throw are as follows:
1
/
2
",
1
/
4
Amp, multi-deck
08 = 36° 09 = 30°
1", 1 Amp, multi-deck
42 = 36° 44 = 30°
1
/
2
", 200 mA, single deck 50 = 36°
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).
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.
OPTIONS
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 MMMDM MM, and
in MMDD MM, and in MMMMMD.
Not available through Distributors
ORDERING INFORMATION
Create the part number using this example.
Stem number from chart
(4 or 5 digits)
Number of Decks
Number of Poles/Deck
093103-2-045
Type of Contacts:
S=Shorting
N=Non-Shorting
Number of Positions/Pole
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
GRAYHILL [ GRAYHILL, INC ]
