Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois 60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com
Rotary Switches
Multi-Deck Rotary Switches
Standard, UL Recognized and
Military Qualified Solder Lug Styles
Note: Common location for a single pole per
deck switch. For common location on
multi-pole switches, see circuit
diagrams.
For rear view of 45°, 60° and 90°,
see circuit diagram.
Rear Views
Series 44
Series 42
DIMENSIONS In inches (and millimeters)
No. Dimension B Approx. Weight No. Dimension B Approx. Weight
of Dimension Style Style Grams of Dimension Style Style Grams
Decks A A M or H 42 44 Decks A A M or H 42 44
1 1.025 (26,04) .062 (1,57) .030 (0,76) 40.0 48 7 3.351 (85,16) .312 (7,92) .280 (7,11) 73.0 90
2 1.371 (34,82) .062 (1,57) .030 (0,76) 45.5 55 8 3.697 (93,90) .312 (7,92) .280 (7,11) 78.5 97
3 1.717 (43,61) .062 (1,57) .030 (0,76) 51.0 62 9 4.043 (102,69) .312 (7,92) .280 (7,11) 84.0 104
4 2.063 (52,40) .062 (1,57) .030 (0,76) 56.5 69 10 4.389 (111,48) .312 (7,92) .280 (7,11) 89.5 111
5 2.409 (61,19) .062 (1,57) .030 (0,76) 62.0 76 11 4.735 (120,27) .312 (7,92) .280 (7,11) 95.0 118
6 3.005 (76,33) .312 (7,92) .280 (7,11) 67.5 83 12 5.081 (129,06) .312 (7,92) .280 (7,11) 100.5 125
Dimension C D E F
Series 42 .562 (14,27) 1.000 (25,4) .830 (21,08) .093 (2,36)
Series 44 .642 (16,31) 1.162 (29,51) 1.000 (25,4) .121 (3,07)
Grayhill part number and date code marked on detent cover label.
Customer part number marked on request. Military part number
marked when required. UL recognized markings as required.
1.015 ± .015
(25,78 ± 0,38) DIA.
OVER TERMINALS
8
9
10
1
2
3
4
5
6
7
GRAYHILL
.064 (1,63) MIN. DIA.
HOLE AFTER PLATING
36°
1.170 ± .015
(29,72 ± 0,38) DIA.
OVER TERMINALS
10
11
12
3
4
5
6
7
8
9
GRAYHILL
.064 (1,63) MIN. DIA.
HOLE AFTER PLATING
30°
2
1
15°
DIM. D
± .010 (0,25) DIA.
.375
± .015
(9,53
± 0,38)
C
LOF NON-TURN
TAB
OF BUSHING
KEYWAY
C
L
SEE NOTE
NON-TURN TAB
.125 ± .003 (3,18 ± 0,08) WIDE BY
.031 ± .003 (0,79 ± 0,08) THICK
DIM. C
± .015 (0,38)
.219
± .005
(5,56
± 0,13)
DIM. E
± .010 (0,25)
.250 + .001 –.002
(6,35 + 0,03 –0,05)
DIA.
DIM. F ± .015 (0,38)
DIM. B REF.
STUD
PROJECTION
#1 THREAD
DIM. A + .046 –.020
(+ 0,05 –0,51)
.250
± .020
(6,35
± 0,51)
.437
± .020
(11,10
± 0,51)
.437
± .020
(11,10
± 0,51)
3/8-32 UNEF-2A THREAD
(MTG. HOLE = 3/8 DIA. MIN.)
BUSHING KEYWAY
.066 ± .002 (1,68 ± 0,05) WIDE BY
.036 ± .003 (0,91 ± 0,08) DEEP
FROM A .375 (9,53) DIA.
INTEGRAL ASSEMBLY NUT,
DO NOT REMOVE
SERIES 42, 43, 44 and 54
1" Diameter, 1 Amp, Standard,
Military SR04
FEATURES
• Rugged Construction Insures
Switch Operation for the Life of
Your Equipment
• Many Circuitry Options
• MIL Qualified Versions MIL-S-3786/04
• Features Choice Include: Shaft/
Panel Seal, Adjustable Stops, PC
Termination, UL Recognized
Rotary
22
Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois 60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com
Rotary Switches
Multi-Deck Rotary Switches
CIRCUIT DIAGRAMS: Solder Lug Terminals
Switch is Viewed From Shaft End and Shown in Position No. 1
Note: All common terminals are located above base terminals as shown.
ONE POLE TWO POLE THREE POLE THREE POLE
Styles A, D and S Styles M, MS, H and HS
ONE POLE TWO POLE
ONE POLE TWO POLE THREE OR FOUR POLE
Rear Views
ONE POLE TWO POLE
ONE POLE TWO POLE THREE POLE
FOUR POLE FIVE OR SIX POLE
Series 44
60° Angle
of Throw
Series 42 & 43
36° Angle
of Throw
Series 44
45° Angle
of Throw
Series 44
90° Angle
of Throw
Series 44 & 54
30° Angle
of Throw
C1
10
11
12
1
2
3
4
5
6
7
8
9
C
LOF
BUSHING
KEYWAY
C
L
C1
C2
10
11
12
1
2
3
4
5
6
7
8
9
C1
C2
C3
10
11
12
1
2
3
4
5
6
7
8
9
C
L
C1
C2
C3
10 11
12
1
2
3
4
5
6
7
8
9
C
L
C4
C1
C2
C3
10 11
12
1
2
3
4
5
6
7
8
9
C
L
C1
C2
C3
C4
C5
C610
11
12
1
2
3
4
5
6
7
8
9
C
L
4
32
1
10
9
8
5
6
7
C1
C
LOF
BUSHING
KEYWAY
4
32
1
10
9
8
5
6
7
C1
C2
C
L
C1
7
8
1
2
3
4
5
6
C
LOF
BUSHING
KEYWAY
C1
C2
7
8
1
2
3
4
5
6
C
L
C4
7
8
2
3
4
5
6
C1
C2
C3
C
L
1
8
1
2
3
4
5
6
7
GRAYHILL
15°
45°
C1
C
LOF
BUSHING
KEYWAY
6
1
2
3
4
5
C1
C2
6
1
2
3
4
5
C
L
C1
C2
C3
C
L
6
1
2
3
4
5
1
2
3
4
5
6
GRAYHILL
15°
60°
C1
4
1
2
3
C
LOF
BUSHING
KEYWAY
C
L
C1
C2
4
1
2
3
1
2
3
4
GRAYHILL
15°
90°
Rotary
23
Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois 60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com
Rotary Switches
Multi-Deck Rotary Switches
The standard and UL recognized switches are
also available with adjustable stops. Two
removable stop washers allow you to limit the
number of switch positions as needed. A knurled
nut is supplied to secure the washers if desired.
These switches have no bushing keyway.
All
other dimensions, ratings and characteristics
are the same as the standard fixed stop styles.
Although not military qualified, the adjustable
styles are useful in military equipment
prototypes. However, when submitting the
equipment for government approval, the fixed
stop qualified style should be substituted.
Equivalent Styles
For style 42A36, use 42D36,
For style 44A30, use 44D30
For style 42M36, use 42D36 initially
For style 44M30, use 44D30 initially
For style 42U36, use 42UD36
For style 44U30, use 44UD30
ADJUSTABLE STOP SWITCHES: Series 42 and 44
Front Views
Series 42 Series 44
Switch is Viewed From Shaft End
and Shown in Position No. 1
Note: All common terminals are located above
base terminals as shown.
PC BOARD MOUNTING PATTERN
Termination
One-sided termination is standard for switches with 2 to 5
positions per pole. Two-sided termination is standard for
switches with 6 thru 10 positions per pole.
6 thru 10 positions
per pole and
terminals from one
side of switch are
available on special
order. See Special
Options, page F-10
or contact Grayhill.
Shown for a two deck switch
CIRCUIT DIAGRAM: PC Mount
ONE POLE
Standard Style
DIMENSIONS In inches (and millimeters)
Grayhill part number and date code marked on detent cover label. Customer part
number marked on request. UL recognized marking as required.
C
LOF
BUSHING
KEYWAY
7
65
4
3
2
1
8
9
10
C1
1.000 ± .010
(25,4 ± 0,25)
DIA.
TERMINAL DIMENSIONS AT THIS
POINT ARE .050 ± .005 (1,27 ± 0,13)
WIDE BY .020 ± .003 (0,51 ± 0,08) THICK
.375 ± .015
(9,53 ± 0,38) TYP.
.750 ± .010
(19,05 ± 0,25)
TYP.
OF BUSHING
KEYWAY
C
L
.250 + .001 –.002
(6,35 + 0,03 –0,05)
DIA.
3/8-32 UNEF-2A THREAD
(MTG. HOLE=3/8 DIA. MIN.)
BUSHING KEYWAY
.066 ± .002 (1,68 ± 0,05) WIDE BY
.036 ± .003 (0,91 ± 0,08) DEEP
FROM A .375 (9,53) DIA.
INTEGRAL ASSEMBLY NUT,
DO NOT REMOVE
COMMON LUG
.250 ± .020
(6,35 ± 0,51)
.830
± .010
(21,08
± 0,25)
DIM. A + .046 – .020
(+1,17 –0,00)
.437 ± .020
(11,10 ± 0,51)
.600 ± .031
(15,24 ± 0,79)
DIM. B REF.
STUD
PROJECTION
#1 THREAD
.174
± .010
(4,42
± 0,25)
C
LC
LC
L
.174 ± .010
(4,42 ± 0,25)
.786 ± .010
(19,96 ± 0,25)
DIA.
.500 ± .015
(12,7 ± 0,38)
TYP.
1.470 ± .020
(37,34 ± 0,51)
TYP.
.735 ± .010
(18,67 ± 0,25) TYP.
.187 ± .015
(4,75 ± 0,38) TYP.
.250 ± .015
(6,35 ± 0,38) TYP.
1
10
6
5
4
3
2
9
8
7
GRAYHILL
.219
± .005
(5,56
± 0,13)
8
9
6
5
4
3
FIRST
STOP
7
8
9
10
11
6
5
4
3
2
FIRST
STOP
ADJUSTABLE STOP
WASHERS
USE OF KNURLED
NUT IS OPTIONAL
SERIES 42
1" Diameter, 1 Amp, PC Mount
OF FRONT SUPPORT
PLATE MOUNTING
HOLES
C
L
.375
(9,53)
TYP.
.750
(19,05)
TYP.
.492
(12,50)
.500
(12,7)
TYP.
.250
(6,35)
TYP.
.110 (2,79)
.174 (4,42) TYP.
C
L OF REAR
SUPPORT
PLATE
MOUNTING
HOLES
C
L OF BASE
TERMINAL
MOUNTING
HOLES
C
L COMMON
TERMINAL
MOUNTING
HOLES
SHAFT END
.174 (4,42)
TYP.
SHAFT AND PANEL SEAL: Srs. 42 & 44
Standard Style
The Series 42/44 Styles, which include the letter "S" with the
exception of style "HS", are watertight sealed to the mounting
panel by utilizing the panel seal kit. These switches are built
with a front plate that does not have a non-turn tab. The
panel seal kit consists of a grooved hex nut, a keyed washer
and a keyed panel seal. The grooved hex nut is assembled
to the switch bushing. The keyed washer is slid down the
bushing slot and seated into the hex nut groove. The seal
is likewise assembled to the bushing and hex nut. The
keyed washer is required to provide seal integrity in the
bushing slot. When assembled to the panel, the grooved
nut, backing washer and seal require the same space as a
normal mounting nut. Hence, the seal kit does not alter the
dimensions. Panel seal kit includes a non-turn washer to be
used into a blind hole in the back panel. For panel seal kit
part dimensions, see Accessories. Style "HS" switches use
a similar sealing method, except the integral assembly nut
retains the panel seal. All sealed style switches are provided
with a shaft to bushing internal seal.
FEATURES
• Satisfies High Current Board Level
Applications
• 36° Angle of Throw Permits up to
Ten Positions
• UL Recognized Versions
Rotary
24
Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois 60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com
Rotary Switches
Multi-Deck Rotary Switches
Standard Style and Military Qualified
DIMENSIONS In inches (and millimeters)
Note: Common location for a single pole per
deck switch. For common location on
multi-pole switches, see circuit
diagrams.
Rear Views
Series 54
Series 43
Number of Approx. Weight
Decks Dimension A Dimension B Grams
Section Section Style Style Style Series Series
“A” “B” A, M or H A M or H 43 54
1 1 1.818 (46,18) .062 (1,57) .030 (0,76) 48 60
2 1 2.164 (54,97) .062 (1,57) .030 (0,76) 54 67
3 1 2.510 (63,75) .062 (1,57) .280 (7,11) 60 74
1 2 2.164 (54,97) .062 (1,57) .030 (0,76) 54 67
2 2 2.510 (63,75) .062 (1,57) .280 (7,11) 60 74
3 2 3.105 (78,87) .312 (7,92) .280 (7,11) 66 81
1 3 2.510 (63,75) .062 (1,57) .280 (7,11) 60 74
2 3 3.105 (78,87) .312 (7,92) .280 (7,11) 66 81
3 3 3.451 (87,66) .312 (7,92) .280 (7,11) 72 88
Grayhill part number and date code marked on detent cover label. Customer part number
marked on request. Military part number marked when required.
1.162 (29,51) DIA.
SER. 54
1.000 (25,4) DIA.
SER. 43
.375
± .015
(9,53
± 0,25)
.642 (16,31)
SER. 54
.562 (14,27)
SER. 43
±.015(0,38)
OF BUSHING
KEYWAY
C
L
SEE NOTE
NON-TURN TAB
.125 ± .003 (3,18 ± 0,08) WIDE BY
.031 ± .003 (0,79 ± 0,08) THICK
.219 ± .005
(5,56 ± 0,13)
.094 ± .004
(2,39 ± 0,10)
.125 + .001 –.002
(3,18 + 0,03 –0,05) DIA.
.250 ± .020
(6,35 ± 0,51)
C
LOF NON-TURN
TAB
.250 ± .020
(6,35 ± 0,51)
.093 ± .015 (2,36 ± 0,38)
SER. 43
.121 ± .015 (3,07 ± 0,38)
SER. 54
.375
± .020
(9,53
± 0,51)
.375
± .020
(9,53
± 0,51) .250 ± .020 (6,35 ± 0,51)
DIM. A + .046 –.020
(+0,05 –0,51)
DIM. B REF.
STUD
PROJECTION
#1 THREAD
SECTION
A
SECTION
B
3/8-32 UNEF-2A THREAD
BUSHING KEYWAY .066 ± .002 (1,68 ± 0,05)
WIDE BY .036 ± .003 (0,91 ± 0,08) DEEP FROM
A .375 (9,53) DIA.
INTEGRAL ASSEMBLY NUT, DO NOT REMOVE
.250 + .001 –.002
(6,35 + 0,03 –0,05) DIA.
.830 (21,08)
SER. 43
1.000 (25,4)
SER. 54
± .010 (0,25)
CONTROLLED BY
.250 (6,35) .125 (3,18)
DIA. SHAFT
MILITARY NUMBER MARKED ON ALL
QUALIFIED SWITCHES
1.015 ± .015
(25,78 ± 0,38)
OVER TERMINALS
36°
GRAYHILL
.064 (1,63) MIN. DIA.
HOLE AFTER PLATING
8
9
10
1
2
3
4
5
6
7
1.170 ± .015
(29,72 ± 0,38) DIA.
OVER TERMINALS
10
11
12
3
4
5
6
7
8
9
GRAYHILL
.064 (1,63) MIN. DIA.
HOLE AFTER PLATING
30°
2
1
15°
SERIES 43
SERIES 54
1" Diameter, 1 Amp, Concentric
Shafts
FEATURES
• Two Switches in the Panel Space
of a Single Shaft Rotary
• Military Qualified Versions
MIL-3786/04
• Choice of 10 Positions (Series 43)
or 12 Positions (Series 54)
Rotary
25
Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois 60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com
Rotary Switches
Multi-Deck Rotary Switches
SERIES 43 and 54
1" Diameter, 1 Amp, Add-A-Pot
FEATURES
• Central Shaft Designed to Operate
an Add-On Potentiometer
• Potentiometer Mounting Plates
Provided
• Adjustable Stop Standard, Fixed
Stop by Order
• Choice of 10 Positions (Series 43)
or 12 Positions (Series 54)
Standard Style
Series 43
Note: Common location for a single pole per
deck switch. For common location on
multi-pole switches, see circuit
diagrams.
Number
of Dimension
Decks A Series 43 Series 54
1 .974 (24,74) 48 60
2 1.320 (33,53) 54 67
3 1.666 (42,32) 60 74
Approx. Weight
Grams
Series 54
DIMENSIONS In inches (and millimeters)
Two potentiometer mounting plates are
supplied. Mounting plates have .261 (6,63)
and .380 (9,65) diameter holes respectively
for mounting potentiometers with 1/4" and 3/8"
bushings. Additional nuts for the through bolts
of the switch are provided for adjustment of
mounting plate location. Tapered tongue on
1/8" shaft provides coupling to screwdriver
slots in potentiometer shafts.
Rear Views
Series 54
Series 43
2
3
4
5
6
7
8
9
1.000 ± .010
(25,4 ± 0,25)
DIA.
.375
± .015
(9,53
± 0,38)
SEE NOTE
NON-TURN TAB
.125 ± .003 (3,18 ± 0,08) WIDE BY
.031 ± .003 (0,79 ± 0,08) THICK
C
LOF NON-TURN
TAB
.562
± .015
(14,27
± 0,38)
.125 + .001 –.002
(3,18 + 0,03 –0,05) DIA.
.250 + .001 –.002
(6,35 + 0,03 –0,05) DIA.
.250 ± .020
(6,35 ± 0,51)
.250 ± .020
(6,35 ± 0,51)
.250 ± .020 (6,35 ± 0,51)
.375
± .020
(9,53
± 0,51)
.375
± .020
(9,53
± 0,51) .093 ± .015 (2,36 ± 0,38)
SER. 43
.121 ± .015 (3,07 ± 0,38)
SER. 54
.140 ± .062
(3,56 ± 1,57)
DIM. A + .046 –.020
(+0,05 –0,51)
.625 ± .046
(15,88 ± 1,17)
#1 THREAD
.830 (21,08) SER. 43
1.000 (25,4) SER. 54
± .010 (0,25)
3/8-32 UNEF-2A THREAD
STOP WASHERS
USE OF KNURLED NUT
OPTIONAL
FIRST
STOP
.219 ± .005
(5,56 ± 0,13)
.094 ± .004
(2,39 ± 0,10)
1.015 ± .015
(25,78 ± 0,38)
OVER TERMINALS
.064 (1,63) MIN. DIA.
HOLE AFTER PLATING
8
9
10
2
3
4
5
6
7
36°
1
FIRST
STOP
2
3
4
5
6
7
8
10
11
9
1.162 ± .010
(29,51 ± 0,25)
DIA.
.642 ± .015
(16,31 ± 0,38)
1.170 ± .015
(29,72 ± 0,38)
OVER TERMINALS
12
9
8
7
6
4
3
2
1
5
11
10
30°
15°
Plated brass spacers for ease of positioning
mounting plate driving assembly are available
on special request (sold only with switches). The
use of spacers is recommended for other than
prototype requirements. When ordering switches
with spacers, give full details regarding special
length, potentiometer being used, etc.
Standard style, concentric shaft, add-a-pot
switches have adjustable stops. See
Adjustable Stop description.
Grayhill part number and date code marked on detent cover
label. Customer part number marked on request. Military
part number marked when required.
Rotary
26
Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois 60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com
Rotary Switches
Multi-Deck Rotary Switches
SERIES 54
1" Diameter, 1 Amp, Add-A-Pot
FEATURES
• Military Qualified MIL-3786/04
• Central Shaft Designed to Operate
MIL Potentiometer
• Mounting Plate Options Provide
Choice of Potentiometer
• Fixed Distance from Switch to
Mounting Plate
Military Qualified Style
Note: Common locations for a single pole per
deck switch. For common location on
multiple switches, see circuit diagram.
Number Approximate
of Dimension Weight
Decks A Grams
1 1.024 (26,01) 60
2 1.370 (34,80) 67
3 1.716 (43,59) 74
DIMENSIONS In inches (and millimeters)
Potentiometer Mounting
The two mounting plates shown below are supplied with
each switch.
Mounting Plate A Mounting Plate B
Series 54M Add-A-Pot Switch is a concentric
shaft unit with provision for potentiometer
mounting. Outer shaft operates switch decks.
Inner shaft terminates in tapered tongue,
which allows any desired potentiometer to be
mounted. The Series 54M Add-A-Pot is
qualified to MIL-DTL-3786/4-3. Patent No.
3,297,830.
Grayhill part number and date code marked on detent
cover label. Customer part number marked on
request. Military part number marked when required.
DIM. A + .046 –.020
(+ 0,05 –0,51)
.642
± .015
(16,31
± 0,38)
NON-TURN TAB
.125 ± .003 (3,18 ± 0,08) WIDE BY
.031 ± .003 (0,79 ± 0,08) THICK
.219 ± .005
(5,56 ± 0,13)
C
LOF NON-TURN
TAB
.375
± .015
(9,53
± 0,38)
1.162 ± .010
(29,51 ± 0,25)
DIA.
.125 + .001 –.002
(3,18 + 0,03 –0,05) DIA.
.250 + .001 –.002
(6,35 + 0,03 –0,05) DIA.
.250 ± .020
(6,35 ± 0,51)
.121 ± .015
(3,07 ± 0,38)
.375
± .020
(9,53
± 0,51)
.375
± .020
(9,53
± 0,51)
.250 ± .020
(6,35 ± 0,51)
.140 ± .062
(3,56 ± 1,57)
1.000
± .010
(25,4
± 0,25)
3/8-32 NEF-2A THREAD
INTEGRAL ASSEMBLY NUT,
DO NOT REMOVE
BUSHING KEYWAY .066 ± .002 (1,68 ± 0,05)
WIDE BY .036 ± .003 (0,91 ± 0,08) DEEP FROM
A .375 (9,53) DIA.
GRAYHILL OR CUSTOMER PART NUMBER
MARKED ON SWITCH COVER UPON REQUEST.
MILITARY NUMBER MARKED ON ALL
QUALIFIED SWITCHES
.575
(14,61)
REF.
#1
THREAD
SEE
POTENTIOMETER
MOUNTING
1.170 ± .015
(29,72 ± 0,38)
OVER TERMINALS
12
9
8
7
6
4
3
2
1
5
11
10
30°
15°
.018 ± .005 (0,46 ± 0,13)
.052 ± .005 (1,32 ± 0,13)
1.265
(32,13)
DIA.
27.5
± 2
.098 ± .003
(2,49 ± 0,08) DIA. (3)
THROUGH BOLT
HOLE (2 EA.)
15
± 2
.245 ± .003
(6,22 ± 0,08) R.
.375 ± .003
(9,53 ± 0,08) R.
.261 ± .003
(6,63 ± 0,08) DIA. (1)
1.265
(32,13)
DIA.
15 ± 2
9
± 2
.437 ± .003
(11,10 ± 0,08) R.
.531 ± .003
(13,49 ± 0,08) R.
.380 ± .003
(9,65 ± 0,08)
DIA. (1)
.130 ± .003
(3,30 ± 0,08)
DIA. (2)
Rotary
27
Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois 60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com
Rotary Switches
Multi-Deck Rotary Switches
MILITARY QUALIFIED
Single Shaft Switches
The military styles of the single shaft Series 42
and 44 rotary switches are qualified to MIL-DTL-
3786/4, specifically SR04-1. Qualification
includes two temperature ranges. Unsealed
styles M, MB, MG and MBG are qualified for -65
to 85°C. Unsealed styles H, HB, HG and HBG,
plus sealed styles HS, HBS, HGS and HBGS are
qualified for -65°C to 125°C. Qualification includes
low level switching and shaft grounding as
specified in MIL-DTL-3786. Qualification includes
30°, 36°, 45°, 60° and 90° angles of throw with
solder lug terminals. The military styles are
dimensionally the same as the standard styles
with two exceptions. The location of the common
for the 3-pole switch differs (see circuit diagrams)
and the non-turn tab for styles HS, HBS, HGS
and HBGS differs per the Shaft and Panel Seal
description following.
Two Switches, Concentric Shafts
The M style of the concentric shaft Series 43
and 54 switches is qualified to MIL-DTL-3786/4,
specifically SR04-2. Unsealed switches are
qualified for -65°C to 85°C in 30°, 36°, 45°, 60°
and 90° throws. The standard and military
styles of the concentric switches have the
same dimensions with the exception of the
location of the 3 pole common (see circuit
diagrams). The 30° and 36° throws are described
in the ordering information. If the 45°, 60° and
90° throws are required, they can be provided in
Section A of the Series 54 Rotary Switches; see
Standard Options, page J-9.
Add-A-Pot Switches
The military style of the add-a-pot Series 54
switch is qualified to MIL-DTL-3786/4, specifically
SR04-3. These unsealed switches are qualified
for -65°C to 85°C in 30°, 45°, 60° and 90° throws.
The dimensions of the military style add-a-pot
switches are not the same as the standard add-
a-pot switches; see drawings.
All Qualified Switches
Complete electrical ratings and characteristics
for all of these qualified switches are listed on the
following pages. Standard variations such as
terminals, shaft and/or bushing length etc., which
do not affect performance, can be marked as
qualified product. Adjustable stops cannot be
qualified. Contact Grayhill for details about
variations.
Military qualified switches may be ordered by
the military M number listed in MIL-DTL-3786/4
or by the Grayhill part number. They will be
marked to specifications.
MILITARY QUALIFIED SHAFT AND
PANEL SEAL:
Styles HS, HBS, HGS and HBGS
The shaft is sealed to the bushing by an internal
O-ring per MIL-P-5516B. The bushing is sealed
to the panel with a silicone rubber washer and a
stainless steel backing washer. The combined
uncompressed thickness is 0.055" (1,40). Since
this switch has a flat cover, a non-turn washer is
supplied (see Panel Seal Kit). If using it, mount
it in front of the panel.
SPECIFICATIONS:
Electrical Ratings
Standard Style
Rated: To make and break the following
loads:
Angle of Throw
30° or 36° 45° or 60° 90°
115 Vac resistive 1 amp 5 amps 5 amps
6-28 Vdc resistive 1 amp 1 amp 2 amps
115 Vac inductive 0.25 amp 2 amps 2 amps
115 Vdc inductive 0.02 amp — —
6-28 Vdc inductive 0.10 amp — —
115 Vdc resistive 0.10 amp — —
To carry 10 amps continuously.
Contact Resistance: 50 milliohms maximum
Insulation Resistance: 1,000 megaohms
minimum
Voltage Breakdown: 1,000 Vac initially (500
Vac or better after most environmental tests)
Life Expectancy: 100,000 mechanical cycles
of operation.
Note:
Actual life is determined
by a number of factors, including electrical
loading, rate of rotation and environment, as
well as maximum voltage breakdown required
at the end of life.
UL Recognition–
Styles UA, UD, UM, UP, US and USP
Grayhill styles A and M and their variations
(D, P, S and SP) of the Series 42, 43, 44 and
54 rotary switches have been tested by
Underwriters Laboratories. The letter U in the
style indicates proper marking as required by
Underwriters Laboratories. These switches
are recognized under file number E35289.
The UL rating for the Series 42, 43, 44 and 54
is as follows:
Electrical Parameters: style UA = 1.0 ampere
at 125 Vac. Style UM = 1.0 ampere at 125 Vac
and also .5 ampere at 125 Vac, inductive
load, 0.75 to 0.8 power factor.
Rating based on the following criteria:
Overload: 50 operations at 150% rated AC
load
Endurance: 6000 operations at the rated load
with 1000 Vac dielectric strength before and
after test
Temperature Rise: Not to exceed 30°C when
carrying rated AC load after test.
Note:
all dimensional drawings for the standard
style Series 42, 43, 44 and 54 also apply to
these switches, with the exception that switches
are marked per specifications.
Electrical Ratings
Military Style
General Rating: This rating is based on
standard Grayhill tests of the Military style
switch done at ambient conditions. It is provided
for comparison to the Standard Style switch.
Charts shown for non-shorting contacts (break
7
6
5
4
3
2
1
00
CYCLES x 1,000
10 25 50
CURRENT (AMPS)
VOLTAGE 115 VAC
RESISTIVE
CYCLES x 1,000
010 25 50
1.7
1.5
1.2
1.0
.75
.50
.20
0
CURRENT (AMPS)
VOLTAGE 30 VDC
RESISTIVE
INDUCTIVE
(2.8 HENRIES)
before make)
Voltage and Load: As listed in the chart
One cycle is 360° rotation and a return
through all switch positions to the starting
position. The data for the curves was
measured at sea level, 25°C and 68% relative
humidity.
The Series 42, 43, 44 and 54, style M, H and
HS switches are made to meet requirements
of MIL-DTL-3786, style SR04. Diallyl phthalate
molded parts and the design of internal
switching elements provide exceptional
performance.
Curves shown are typical load-life curves for
Series 42, 43, 44 and 54, style M, H and HS
switches with 30° or 36° angles of throw.
They show the numbers of cycles of rotational
life expectancy for the types of loads shown.
Thus, with a 5 amp, 115 Vac resistive load,
10,000 cycles of life is expected. If the load
is reduced to 3 amps, life is increased to
25,000 cycles. The larger angles of throw
(45°, 60° or 90°) switch larger currents for a
like number of cycles.
Life limiting or failure criteria for these curves
are:
Contact Resistance: 50 milliohms maximum
Insulation Resistance: 1,000 megaohms
minimum between mutually insulated parts
Voltage Breakdown: 1,000 Vac minimum
between mutually insulated parts. These
switches will carry 10 amps with maximum
contact temperature rise of 20°C. Life can be
predicted by Grayhill if less critical life
characteristics, elevated temperature or
reduced pressure is involved.
Rotary
28
Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois 60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com
Rotary Switches
Multi-Deck Rotary Switches
SPECIFICATIONS:
MIL-S-3786 Electrical Values
Military Style
Style M switches, at 85°C, approximately
68% humidity and sea level pressure and
style H and HS at 125°C have been tested to
make and break the following loads as stated
in MIL-DTL-3786/SR04; 250 milliamperes at
28 Vdc resistive, 100 milliamperes at 28 Vdc
inductive (2.8 henries); 75 milliamperes at
115 Vac resistive.
These switches have also been tested at
reduced barometric pressure (70,000 feet),
25°C at approximately 68% relative humidity
to make and break the following loads as
stated in MIL-DTL-3786/SR04; 200
milliamperes, 28 Vdc resistive; 25 milliamperes,
28 Vdc inductive (2.8 henries); 20
milliamperes, 115 Vac resistive. When tested
to these loads and conditions the style M, H
and HS switches meet the following life limiting
or failure criteria after 25,000 cycles in
accordance with MIL-S-3786.
Contact Resistance: 50 milliohms maximum
Insulation Resistance: 1,000 megaohms
minimum between terminals and shafts
Dielectric Strength: 1,000 Vac (atmospheric
pressure) and 450 Vac (reduced pressure)
minimum between mutually insulated parts.
When tested at sea level 25°C and 68%
relative humidity with failure criteria of 50
milliohms max. and 750 Vac breakdown
voltage, these switches will make and break
the following loads: 250 mA at 28 Vdc,
inductive (2.8 henries); 1.25 amps at 28 Vdc
resistive; 2.0 amps at 115 Vac, 60 Hz resistive,
for 10,000 cycles.
These switches also meet MIL-DTL-3786/SR04
for moisture resistance, medium and high shock,
vibration (10 to 2000 cps), thermal shock (-
65°C to 125°C), salt spray, explosion and
terminal pull.
Materials and Finishes
Standard Style
Bases: Melamine per (MIL-M-14) ASTM-D-
5948
Cover, Deck Separators, End Plate and Rotor
Mounting Plate: Phenolic per (MIL-M-14)
ASTM-D-5948
Mounting Bushings: Brass, tin/zinc-plated.
Shaft, Cover Plate, Retaining Rings, Through
Bolts, Shaft Extensions, Stop Arm, Thrust
Washers Stop Washers and Rear Support
Plate: Stainless Steel
Detent Balls: Steel, nickel-plated
Detent Springs: Tinned music wire
Rotor Contact, Stator (Base) Contacts: Silver
alloy
Terminals (Except Common): Brass, tin plated
Common Plate, Including Solder Lug: Brass,
silver-plated .0003" minimum
Mounting Hardware: Two mounting nuts .094"
(2,39) thick by .562" (14,27) across flats and
one internal tooth lockwasher are supplied
with each switch.
Stud Nuts, Mounting Nuts, Lock Washers:
Tin/zinc-plated or stainless steel.
Materials and Finishes
Military Qualified
Bases: Diallyl per (MIL-M-14) ASTM-D-5948
Cover, Deck Separators, End Plate and Rotor
Mounting Plate: Diallyl per (MIL-M-14) ASTM-
D-5948
Mounting Bushings: Brass, tin/zinc-plated.
Shaft, Cover Plate, Retaining Rings,
Through Bolts, Shaft Extensions, Stop
Arm, Stop Washers, Thrust Washers and
Rear Support Plate: Stainless steel
Detent Balls: Steel, nickel-plated
Detent Springs: Tinned music wire
Rotor Contact: Silver alloy
Terminals, Common Plate including
Solder Lug: Brass, silver-plated .0003"
minimum
Mounting Hardware: Two mounting nuts
.094" thick by .562" across flats and one
internal tooth lockwasher are supplied with
each switch.
Stud Nuts, Mounting Nuts, Lock Washers:
Tin/zinc-plated or stainless steel.
Additional Characteristics
Standard Style and Military Qualified
Contact: Shorting or non-shorting wiping
contacts with over 150 grams of contact
force
Rotational Torque: 8-115 ounce-inches
depending upon the number of poles per
deck, number of decks and angle of throw
Mechanical Life Expectancy: 100,000
cycles of operation
Shaft Flat Orientation: Flat opposite
contacting position of pole number one (See
circuit diagram).
Stop Strength: For Standard style: 15 pound-
inches minimum. For Adjustable stop styles:
12 pound-inches
Extended Stud: Single shaft switches of six
or more decks and concentric shaft switches
of a combination of five or more decks
(Standard style) or four or more decks (Military
style) have longer studs with extra mounting
nuts for recommended double end mount.
Rotary
29
Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois 60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com
Rotary Switches
Multi-Deck Rotary Switches
CHOICES AND LIMITATIONS: Series 42, 43, 44 and 54
A = Standard, Solder Lugs
P = Standard, PC Mount Terminals
D = Standard, Adjustable Stops
S = Shaft and Panel Seal
U = UL Recognized
M = Military Qualified 85°C4
H = Military Qualified, 125°C
B = Military, Grounded Shaft
G = Military, Low Level Rating
SINGLE SHAFT SWITCHES
Style Choices Angle of Number of Poles Positions Shorting or
Series Unsealed Shaft/Panel Seal Throw Decks Per Deck Per Pole1,3 Non-Shorting
01 thru 12 1 02 thru 103N or S
01 thru 12 2 02 thru 05 N or S
01 thru 12 1 02 thru 123N or S
01 thru 12 2 02 thru 06 N or S
01 thru 08 3 02 thru 04 N or S
01 thru 06 4 02 or 03 N or S
01 thru 04 5 02 N or S
01 thru 04 6 02 N or S
01 thru 12 1 02 thru 083N or S
01 thru 06 2 02 thru 04 N or S
01 thru 04 3 02 N
01 thru 03 4 02 N
01 thru 12 1 02 thru 063N
01 thru 06 2 02 or 03 N
01 thru 04 3 02 N
01 thru 12 1 02 thru 043N
01 thru 06 2 02 N
01 thru 12 1 AJ (2 thru 12)1N or S
01 thru 12 2 AJ (2 thru 6)1N or S
01 thru 08 3 AJ (2 thru 4)1N or S
01 thru 06 4 AJ (2 or 3)1N or S
01 thru 12 1 AJ (2 thru 10)1N or S
01 thru 12 2 AJ (2 thru 5)1N or S
01 thru 12 1 02 thru 103N or S
AS
UA US
UM5—
MMS
4
MB MBS4
MG MGS4
MBG MBGS4
HHS
HB HBS
HG HGS
HBG HBGS
D—
UD —
PSP
UP USP
1For Adjustable Stop (with the letter D), use AJ
instead of number of positions when ordering.
2For 45°, 60° or 90° throws in Series 54 switches
of these styles, see Standard Options.
3For single pole switches with the maximum
positions per pole, continuous rotation is
possible. Specify fixed stop or continuous
rotation when ordering single shaft switches.
Concentric shaft switches have continuous
Style Angle of Section A (Front) Section B (Rear)
Series Choices Throw Decks Poles Position N or S Decks Poles Position N or S
CONCENTRIC SHAFT, 2 SWITCHES
A2
UA2
M2
D
UD
M
54
43
54
43
54
ADD-A-POT SWITCHES
Second shaft operates a potentiometer
supplied by the customer.
Rear mounting plates are provided.
30°
36°
30°
36°
30°
01 thru 03 1 02 thru 105N or S
Concentric Shaft Switches
36°
30°
45°
60°
90°
30°
36°
36°
42
44
44
42
42
01 thru 03 1 02 thru 123N or S
01 thru 03 2 02 thru 06 N or S
01 thru 03 1 02 thru 123N or S 01 or 02 3 02 thru 04 N or S
01 thru 03 2 02 thru 06 N or S 01 4 02 or 03 N or S
01 5 02 N or S
01 6 02 N or S
01 thru 03 1 02 thru 103N or S
01 thru 03 2 02 thru 05 N or S
01 thru 03 1 AJ (2-12)1N or S
01 thru 03 2 AJ (2-6)1N or S
01 thru 03 1 AJ (2-10)1N or S
01 thru 03 1 02 thru 125N or S
01 thru 03 2 02 thru 06 N or S
rotation.
4Styles which include both M and S are not
qualified but are made of the same materials and
construction as qualified types. For qualified
switches with shaft and panel seal, use equivalent
HS style.
5UM switches are made of the same materials
and construction as the M style switches. For
military switch UM is not required; use M style.
Rotary
30
Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois 60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com
Rotary Switches
Multi-Deck Rotary Switches
ACCESSORIES
Internal Tooth Lockwasher–Figure A
For a 3/8" bushing. Approximately 0.500" (12,7)
outside diameter, .022" (0,56) thickness. Material
is cadmium-plated steel. Part No. 12Q1272-1
For a 1/4" bushing. Approximately
0.400" (10,16) outside diameter, .018"
(0,46) thickness. Material is steel, tin/
zinc plated.
Non-Turn Washer–Figure B
Can be ordered as extra hardware for the
Series 5000, 24, 42, 43, 44, 54, 71B, 53, 57 and
59 rotary switches. The internal key of the
washer slides into the bushing keyway. The
right angle tab locks into a predrilled hole on
the back side of the mounting panel. Material is
brass, tin/zinc plated. Part No. 12C1087-1
Panel Seal Kit–Figure C
Sold as a separate item to seal the switch
ORDERING INFORMATION: Single Shaft Switches, Add-A-Pot Switches
ORDERING INFORMATION: Concentric Shaft Rotary Switches
Series: Determined by the type of switch and
the angle of throw
Style*: Letter(s) from the Choices and Limitations chart
Angle of Throw: Must agree with Series Number
Number of Decks: As limited by the angle of throw, the poles per deck, switch style and type of contacts
44M30–02–1–12N–F
Stop Arrangement: Add letter F to a one pole per deck switch with the maximum number of positions for
a stop between position 1 and the last position. Leave blank for continuous rotation
Type of Contacts: N = Non-shorting; S = Shorting
Positions Per Pole: Requires 02 positions as a minimum to maximum allowable dependent on the angle
of throw and poles per deck. Use AJ for adjustable stops (Styles D and UD).
Poles Per Deck: As limited by angle of throw, switch series and style
* All rotary switches that are required to have military designated markings and testing adhering to MIL-3786 are to be ordered by specifying
the military part number identified on the appropriate slash sheet.
Series: Determined by the angle of throw, applicable to both sections
Style*: Letter(s) from the Choices and Limitations chart
Section A (front)
Number of Decks: As limited by the number of poles per deck
Poles Per Deck: As limited by the angle of throw
Positions Per Pole: Requires 02 positions as a minimum to the maximum allowable dependent on the angle
of throw and the poles per deck
Type of Contacts: N=Non-shorting, S=Shorting. All one pole per deck switches with the maximum number
of positions are continuous rotation
43M02110N–M03203S
Section B (rear)
The limitations listed for Section A apply to Section B
Type of Contacts
Positions Per Pole
Poles Per Deck
Number of Decks
Style
* All rotary switches that are required to have military designated markings and testing adhering to MIL-3786 are to be ordered by specifying
the military part number identified on the appropriate slash sheet.
Available from your local Grayhill Distributor
Non-Turn Washer Seal Keyed Washer Hex Nut
FIGURE C
.625 ± .010
(15,88 ± 0,25) DIA.
.375 + .004 – .000
(9,53 + 0,10) DIA.
.375 ± .005
(9,53 ± 0,13)
.125 ± .003
(3,18 ± 0,08)
C
L
.032
± .002
(0,81
± 0,05)
.187 ± .010
(4,75 ± 0,25)
.045 ± .003
(1,14 ± 0,08)
.010 ± .002
(0,25 ± 0,05)
.562 (14,27)
ACROSS
FLATS
.088 (2,24)/
.093 (2,36)
.120 ± .003
(3,18 ± 0,08)
.060 ± .002
(1,52 ± 0,05)
.154
+ .004
–.000
(3,91
+ 0,10
–0,00)
DIA.
.437 ± .010
(11,10 ± 0,25)
.625 ± .010
(15,88 ± 0,25)
DIA.
.376 + .003 –.000
(9,55 + 0,08 –0,00)
DIA.
.125 ± .010
(3,18 ± 0,25)
.032 ± .002
(0,81 ± 0,05)
FIGURE B
FIGURE A
bushing to the panel. The kit consists of four
items: a grooved hex nut, a keyed washer, a
keyed seal and a non-turn washer. Assembly is
described on Page J-53. Dimensions of panel
seal kit items are shown in Figure C. This kit
seals the bushing to the panel; it does not seal
the shaft to the bushing. Not usable with
adjustable stop switches. Part No. 42-24
For prices and discounts, contact a local Sales Office, an authorized local Distributor or Grayhill.
Rotary
31
