Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois 60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com
Rotary Switches
Single Deck Rotary Switches
CIRCUIT DIAGRAMS AND REAR VIEWS: PC Mountable AND Solder Lug Terminals
Rear View
Circuit as Viewed From Shaft End
30° Angle
of Throw
ONE POLE
TWO POLES
36° Angle
of Throw
PC Mount Solder Lug
Dimension Terminals Terminals
A .184 ± .015 .126 ± .015
(4,67 ± 0,38) (3,20 ± 0,38)
FOUR POLES
ONE POLE
TWO POLES
15°
30° TYP.
.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)
COMMON LOCATION
FOR 1 POLE SWITCH
COMMON LOCATION
FOR 2 POLE SWITCH
POS. 1
COMMON LOCATION
FOR 1 POLE SWITCH
18°
36° TYP.
DIMENSION A
DIA. CIRCLE OF CENTERS
.340 ± .015
(8,64 ± 0,38) DIA.
CIRCLE OF CENTERS
COMMON LOCATION
FOR 2 POLE SWITCH
POS. 1
15°
30° TYP.
.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)
POS. 1
7
8
9
10
11
12
1
2
34
5
6
C2
C1
6
7
8
9
10
1
2
3
4
5
7
8
9
10
11
12
1
2
3
4
5
6
7
8
9
10
11
12
1
2
34
5
6
C3
C4
C2
C1
C2
C1
6
7
8
9
10
1
2
3
4
5
SPECIFICATIONS
Electrical Ratings
Chart shown for non-shorting (break before make)
contacts, resistive load.
300
200
0
0
10 20 30
CYCLES x 1000
115 Vac 0r 30 Vdc
CURRENT - MILLIAMPS
100
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
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.
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.
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.
J-23
