Single Deck Rotary Switches
SPECIFICATIONS
Electrical Ratings
Military Qualification
LifeExpectancy:Withthelimitingcriteriastated Insulation Resistance: 1,000 Mohms
here, the Series 50 and 51 with non‑shorting minimum between mutually insulated parts.
contacts will switch the following loads at Voltage Breakdown: 600 Vac minimum
atmospheric and reduced pressures for 25,000 between mutually insulated parts at standard
cycles of operations. One cycle is 360° rotation atmospheric pressure.
The dimensions for qualified switches are
the same as those indicated in the drawings
of standard switches. Switches with standard
variations, such as shaft and bushing length,
whichdonotaffectswitchperformance,canbe
marked as qualified product. Contact Grayhill
for complete information on variations.
clockwise and 360° return.
LifeExpectancy:Listedforthevoltagesource
and make and break current levels. Contact
Grayhill for more information if any of the
following is true: the life limiting criteria are
morecriticalthanthoselisted;longeroperation
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.
At 85°C, atmospheric pressure
200 mA,
150 mA,
30 mA,
100 mA,
28 Vdc resistive
115 Vac resistive
28 Vdc inductive
28 Vdc lamp load
36°, 45°, 60°, 90° (Series 50): The C and M
style switches are qualified to MIL‑S‑3786/20.
They include the following:
Solder lug or PC terminals
With or without panel seal
Series 50 qualified switches may be ordered
by the ‘M’ number or by the Grayhill part
number.
30° (Series 51): The C and M style switches
are qualified to MIL‑S‑3786/35. They include
the following:
75 mA, 220 Vac lamp load
At 25°C, reduced pressure (70,000 feet)
200 mA,
150 mA,
28 Vdc resistive
115 Vac resistive
75 mA, 220 Vac resistive
Contact Resistance: 20 milliohms maximum,
(10 milliohms initially).
Solder lug or PC terminals
With or without panel seal
Series 51 qualified switches may be ordered
by the ‘M’ number or by the Grayhill part
number.
SPECIFICATIONS: Other
Additional Characteristics
Contact Type and Forces: Shorting or non‑ Switch Base: Thermoset
shorting wiping contacts with over 80 grams Detent Rotor: Nylon
Materials and Finishes
Panel Seal: Silicone rubber
Shaft Seal: Fluorosilicone
of contact force.
Shaft,StopBlades,StopArm,Thrustwasher,
Mounting Nuts: Brass, tin‑zinc plated
MountingHardware:Onemountingnut.089"
thick by .375" across flats and one internal
tooth lockwasher are supplied with the switch.
Maximum Mounting Torque: 15in‑lbs
Shaft Flat Orientation: Flat opposite and Retaining Ring: Stainless steel
contacting position of pole number one (see Detent Balls: Steel, nickel‑plated
circuit diagrams).
Terminals: Switches have the full circle of Detent and Contact Springs: Stainless steel
terminals, regardless of number of active Common Ring: Brass, gold‑plated over silver
Bushing: Zinc, tin‑zinc plated
position.
plate.
Stop Strength: 7.5 pound‑inches minimum
Terminals: Brass, gold‑plated over silver plate
Rotational Torque: 8–24 ounce‑inches, and nickel plate
depending on the number of poles.
RotorContact:Preciousmetalalloy,gold‑plated
1/4" SHAFT: Style K
PROCESS SEALED–Style T
Switch can be mounted on PC board with other
components and subjected to wave soldering
and conventional board cleaning techniques.
No secondary wiring or soldering is necessary.
.250
.0ꢀ5
.2ꢀ9
.004
+.00ꢀ
-.002
.250
Bushingiso‑ringsealed;epoxypottingsealsthe
terminals and the rear of the switch. Designed
for PC assembly, this sealing technique can
also be applied to solder lug terminal switches.
A bushing to panel seal can also be added to
the process sealed versions. Military qualified
versionsareavailable,seeorderinginformation.
.250
.0ꢀ5
3/8-32 UNEF-2A
THREAD
.340
.005
.375
.0ꢀ5
"E" Style
1/8"Shatf
"K" Styel
CIRCLE SHOWING
DIMENSIONS OF
HOLETOBE CUT
IN PANEL.
Ø0.380
Ø0.280
Ø0.254
POS.1
POS.1
0.240
POS.1
0.350
0.208
Grayhill, Inc.
•
561 Hillgrove Avenue
•
LaGrange, Illinois 60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com