Single Deck Rotary Switches
SERIES 56
0.5" Diameter, 200mA,
.355" Behind Panel
FEATURES
• Requires Minimum Distance Behind
the Panel
• Adjustable Stop Types Provide
Prototypes Immediately
• Industrial Quality, Economically
Priced
DIMENSIONS
In inches (and millimeters)
PC Mount Style
.250 ± .015
(6,35 ± 0,38)
.375 ± .015
(9,53 ± 0,38)
.250 ± .015
(6,35 ± 0,38)
.377
± .020
(9,58
± 0,51)
.110
± .015
(2,79
± 0,38)
FOR REAR
VIEWS, SEE
FOLLOWING
PAGE.
.203 ± .003
(5,16 ± 0,08)
ACROSS
BUSHING
FLATS
A
.500
Ø
± .015
(12,70
± 0,25)
PC TERMINAL DETAIL
.110 ± .015
(2,79 ± 0,38)
.016 ± .004
(0,4 ± 0,10)
POS. 1
Ø .125 ± .002
(3,18 ± 0,06)
GRAYHILL
2 1 10 9
.016 ± .004 SQ.
(0,4 ± 0,10)
.046 ± .004
(1,2 ± 0,10)
PC COMMON
.110 ± .015
(2,79 ± 0,38)
.094 ± .010
(2,39 ± 0,25)
1/4-28 UNEF-2A
THREAD
Rotary Switches
ANGLE OF
THROW
30°
36°
ANGLE
A
105°
108°
Grayhill part number and date code marked on label.
Customer part number marked on request.
Ø .025 ± .002
(0,64 ± 0,05)
Solder Lug Style
SOLDER LUG TERMINAL DETAIL
.203 ± .003
(5,16 ± 0,08)
ACROSS
BUSHING
FLATS
A
.500
Ø
± .015
(12,70
± 0,38)
.250 ± .015
(6,35 ± 0,38)
.375 ± .015
(9,53 ± 0,38)
.250 ± .015
(6,35 ± 0,38)
.480 ± .020
(12,19 ± 0,51)
.125 ± .015
(3,18 ± 0,38)
.063 ± .005
(1,60 ± 0,13)
.016 ± .004
(0,41 ± 0,10)
GRAYHILL
2 1 10 9
FOR REAR
VIEWS, SEE
FOLLOWING
PAGE.
.020 ± .004
(0,51 ± 0,10)
.046 ± .004
(1,17 ± 0,10)
POS. 1
Ø .125 ± .002
(3,18 ± 0,06)
SOLDER LUG COMMON
.125 ± .015
(3,18 ± 0,38)
.094 ± .010
(2,39 ± 0,25)
ANGLE OF
THROW
30°
36°
ANGLE
A
105°
108°
1/4-28 UNF-2A
THREAD
Ø .062 ± .002
(1,58 ± 0,51)
Grayhill part number and date code marked on label.
Customer part number marked on request.
Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois
60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com
J-22
Single Deck Rotary Switches
CIRCUIT DIAGRAMS AND REAR VIEWS: PC Mountable AND Solder Lug Terminals
Rear View
.366 ± .015
(9,30 ± 0,38)
DIA. CIRCLE
OF CENTERS
.190 ± .015 (4,83 ± 0,38)
DIA. CIRCLE OF CENTERS
15°
(PC MOUNT AND
POS. 1
SOLDER LUG)
30° TYP.
COMMON LOCATION
FOR 2 POLE SWITCH
Circuit as Viewed From Shaft End
.366 ± .015
(9,30 ± 0,38)
DIA. CIRCLE
OF CENTERS
.190 ± .015 (4,83 ± 0,38)
DIA. CIRCLE OF CENTERS
(PC MOUNT AND
SOLDER LUG)
9
8
7
6
5
4
10
11
12
1
2
3
15°
POS. 1
30° TYP.
30° Angle
of Throw
ONE POLE
9
8
7
COMMON LOCATION
FOR 1 POLE SWITCH
10
11
C2
9
8
7
6
5
C3
10
11
C4
12
1
2
12
1
2
6
5
C2
C1
C1
4
3
4
3
TWO POLES
.340 ± .015
(8,64 ± 0,38) DIA.
CIRCLE OF CENTERS
6
5
4
3
2
8
7
FOUR POLES
8
9
10
1
6
5
4
3
C1
7
C2
9
10
1
2
18°
POS. 1
36° TYP.
DIMENSION A
DIA. CIRCLE OF CENTERS
36° Angle
of Throw
COMMON LOCATION
FOR 2 POLE SWITCH
COMMON LOCATION
FOR 1 POLE SWITCH
Dimension
A
PC Mount
Terminals
.184 ± .015
(4,67 ± 0,38)
Solder Lug
Terminals
.126 ± .015
(3,20 ± 0,38)
ONE POLE
TWO POLES
CURRENT - MILLIAMPS
Rotary Switches
SPECIFICATIONS
Electrical Ratings
Chart shown for non-shorting (break before make)
contacts, resistive load.
critical than those listed; longer operation is
required; a larger make and break current is
required; the operating environment includes
elevated temperatures or reduced pressures.
Contact Carry Rating:
Switch will carry 6
amperes continuously with a maximum
contact temperature rise of 20°C.
Materials and Finishes
Housing:
Zinc die cast, zinc-plated with chromate
treatment.
Mounting Nut:
Brass, zinc-plated with chromate
treatment.
Lockwasher:
Spring steel, zinc-plated with
chromate treatment.
Panel Seal:
Silicone rubber
Shaft and Stop Arm:
Zinc die cast, zinc-plated
with chromate treatment.
Retaining Ring:
302 Stainless steel, passivated
Shaft Seal:
Silicone rubber
Stop Pins:
303 Stainless steel, passivated
Detent Rotor:
Molded thermoplastic
Detent Spring:
Tinned music wire
Detent Balls:
Steel, nickel-plated
Contact Spring:
Stainless steel, passivated
Rotor Contact:
Brass, silver over nickel plate
Common Ring:
Brass, gold over silver over
nickel plate
Terminals:
Brass, gold over silver over nickel
plate
Switch Base:
Molded thermoset plastic
Mounting Hardware:
One mounting nut .089"
thick by .375" across flats and one internal tooth
lockwasher are supplied with the switch.
300
200
100
0
0
10
20
30
Additional Characteristics
Contact Type and Forces:
Shorting or non-
shorting wiping contacts with over 25 grams of
contact force.
Shaft Flat Orientation:
Flat opposite contacting
position of pole number one (see circuit diagrams).
Terminals:
Switches have the full circle of
terminals, regardless of number of active positions.
Stop Strength:
7.5 lb-in. minimum
Rotational Torque:
3.5 to 9 oz-in. (21-53 mN-
m), depending on the number of poles.
Bushing Mounting:
Required for switches with
stops, and recommended for switches without
stops.
Meets MIL-S-3786 for:
High and medium shock; Vibration (10 to 2,000
Hz); Thermal shock (-65° to 85 ° C); Salt spray;
Explosion; Stop strength (7.5 in-lbs. minimum
(.85 N-m); Terminal strength; Sealed styles
withstand water pressure of 15 PSI minimum
(103 KPa) without leakage.
CYCLES x 1000
115 Vac 0r 30 Vdc
One cycle is 360° rotation clockwise and 360°
return. The data for the curve was measured at
sea level, 25°C and 68% relative humidity with
the life limiting criteria which follows.
Contact Resistance:
100 milliohms maximum,
(15 milliohms initially).
Insulation Resistance:
10,000 Mohms
minimum between mutually insulated parts
(50,000 Mohms initially).
Voltage Breakdown:
600 Vac minimum
between mutually insulated parts at standard
atmospheric pressure.
Life Expectancy:
As determined from the load-
life curve for the current to be switched. Contact
GRAYHILL for more information if any of the
following is true: the life limiting criteria are more
J-23
Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois
60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com
Single Deck Rotary Switches
SHAFT AND PANEL SEAL: Style S
SEAL
Panel is sealed by an O-ring at
the base of bushing. Shaft is
sealed by an O-ring inside the
bushing. After the switch is
mounted, seals do not alter the
dimensions of the unsealed
style.
Shaft and
Panel Seal
SCREWDRIVER SLOTTED SHAFT: Option
.125 ± .015
(3,18 ± 0,38)
.050 ± .005
(1,27 ± 0,13)
.032 ± .005
(0,81 ± 0,13)
A
Series 56 rotary switches are
available with a screwdriver
slotted shaft with dimensions
as shown. Available in the
styles, angles of throw and pole/
positions combinations shown
in the choice and limitations
chart.
Screwdriver
Slotted Shaft
ADJUSTABLE STOP SWITCHES
Two stop pins and an adhesive backed sticker
or seal washer are provided. Sticker is
temporarily removed to locate stop pins as
desired to limit the shaft rotation. All dimensions
are identical to the fixed stop switch counterpart.
Adjustable
Stop
Rotary Switches
ACCESSORY: Non-Turn Washer
In Inches (and millimeters)
.400
± .005
DIA.
(10,16
± 0,13)
.250 ± .003
(6,35 ± 0,08)
.025
± .001
(0,64
± 0,03)
90° ± 1°
.015
(0,38)
RADIUS
MAX.
.125
± .005
(3,16
± 0,13)
ADJUSTABLE
STOP PINS
REMOVABLE
STICKER FOR
ADJUSTMENT
OF STOPS
ADJUSTABLE
STOP PINS
REMOVABLE
SEAL WASHER
FOR ADJUSTMENT
OF STOPS
C
L
.060 ± .001
(1,52 ± 0,25)
SUGGESTED ADJUSTABLE STOP SUBSTITUTION GUIDE
Fixed Stop
Style
56A
56S
56P
56SP
Adjustable Stop
Style Equivalent
56D
56SD
56DP
56SDP
Fixed Stop
Style
56B
56BS
56BP
56BSP
Adjustable Stop
Style Equivalent
56BD
56BSD
56BDP
56BSDP
Part No. 50J1066
Cut round hole for the bushing and for the
non-turn tab. Washer fits the double D
bushing flats. Washer is sold only when
accompanied by an order for a like number
of switches. Washer is 302 stainless steel.
Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois
60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com
J-24
Single Deck Rotary Switches
CHOICES AND LIMITATIONS: Series 56
A = Standard, 1/8" Shaft
B = Screwdriver Slot Shaft
D = Adjustable Stop (Adj. Stop)
P = PC Mount Terminals
S = Shaft/Panel Seal (S/P Seal)
Style
Designation
A
S
P
SP
D
SD
DP
SDP
1
Solder Lug
Terminals
X
X
FEATURES
PC Mount Shaft/Panel
Seal
Terminals
Screwdriver
Adjustable Slotted Shaft
Stops
1
Equivalent
B
Angle
Of
Throw
Number
Of
Poles
Number Of
Positions
Per Pole
Shorting Or
Non-Shorting
Contacts
X
X
X
X
X
X
X
X
X
X
X
X
BS
BP
BSP
BD
BSD
BDP
BSDP
36°
30°
1
2
4
02 thru 12
02 thru 06
02 or 03
N or S
N or S
N or S
X
X
1
2
02 thru 10
02 thru 05
N or S
N or S
Adjustable stop versions allow selection of 2 positions to the maximum number of positions per pole.
ACCESSORIES
Control knobs available, see page I-57.
ORDERING INFORMATION
Series
Style:
Letters from Choices Chart
Angle of Throw:
30 or 36°
56A36–01–1–10N–F
Stop Arrangement:
The suffix C or F must be added to a one
pole per deck switch with the maximum number of positions to
indicate continuous rotation (C) or fixed stops (F) between posi-
tion 1 and the last position. Leave blank if not applicable.
Type of Contacts:
N = Non-shorting, S = Shorting
Positions Per Pole:
02 as a minimum to the maximum
allowable for the angle of throw and number of poles per the
Choices Chart. Use the letters AJ in this location if adjustable
stop switch is to be ordered.
Poles per Deck:
Limited by angle of throw. See chart
Number of Decks:
01 only
STANDARD OPTIONS
Available from your local Grayhill Distributor
For prices and discounts, contact a local Sales
Office, an authorized local Distributor, or Grayhill.
Not available thru Distributors when Intermixing
of shorting and non-shorting contacts. Contact
Grayhill.
Rotary Switches
J-25
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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