CTS 212 Rotary
Switch
Hill and valley detent
Balanced double bump detent spring
Excellent feel
30, 60 or 90 indexing
Spring return styles available
Adjustable stop available
Solder lug and printed circuit terminals available
Molded stator prevents solder from flowing into
the circuit
Custom switching patterns available
Index or wafers are available separately
Series 212
Technical Data Sheet 1448C
C T S C O R P O R A T I O N /
M A N U F A C T U R E R O F R E L I A B L E E L E C T R O N I C C O M P O N E N T S
Electrical and Mechanical Specifications
Indexing
Double bump spring hill and valley detent with
30 indexing for 2 through 12 positions or
60 indexing from 2 to 6 positions.
90 indexing -consult CTS
Voltage and Current Rating
UL Rating:
3
/
4
amp at 125 VAC (shorting type only)
Special Rating:
1
/
4
amp at 28 VDC (shorting or
non shorting)
1 amp at 28 VDC Shorting
Contact Resistance
0.008 to 0.010 ohm when measured from adjacent
terminals
Stop Strength
15" lbs (17.3Kg-cm).
Torque
Up to 48" oz. (3.5Kg-cm).
Detent Rotational Life
Standard: 25,000 cycles through 12 positions and
return at 10 cycles per minute.
Materials
Shaft:
Aluminum or unplated brass at CTS option
Bushing: Standard -- Brass
Materials (continued)
Detent Spring: Spring brass or nickel silver depending
on torque requirements
Front Plate:
Zinc plated or nickel steel at CTS option
Rotor Contacts, Stator Contacts and Terminals:
Silver
plated brass standard
Stator Insulator:
Glass reinforced thermoset material
Bushing Lengths
Standard:
3
/
8
"-32 UNEF-2A Thread,
1
/
4
" (6.35mm)
or
3
/
8
" (9.53mm) long.
Special Lengths: Available as required -- Brass
Locating Lugs
Standard: Left side .531" (13.5mm) radius
Special:
Right side .531" (13.5mm) radius or no lug
Shaft Trim
Standard: Plain round
Special:
Flat, slot, knurl, or mixed (flat with slot)
Frames
Machine screw, bolt & nut, or rivet construction
Lubrication
Special lubrication is used sufficient for the life
of the index assembly under normal hand operation.
Technical Data Sheet 4212
DETENT STYLE
30 INDEX
212 HILL &
VALLEY
CONTACT TYPE
N NON SHORTING
(BREAK BEFORE MAKE)
S SHORTING
(MAKE BEFORE BREAK)
SHAFT FMS
1/32" INCREMENTS
20 .625"
(15.9MM)
24 .750"
(19.1MM)
28 .875"
(22.2MM)
32 1.000" (25.4MM)
POLES
01 1 POLE
10 10 POLES
ETC.
TERMINAL STYLE
T SOLDER LUG
X PC
U PC FORMED
TO REAR
P X STYLE WITH
.100" (2.54MM)
SPACING
SPECIALS
N NONE
A ADJUSTABLE
STOP
B
60 INDEX
C
90 INDEX
D
NO
LOCATING
LUG
E LOCATING
LUG RIGHT
SIDE
SHAFT TRIM
R ROUND
F FLATTED .250" X .156"
(6.35MM X 4.0MM)
K KNURLED EIA S148
S SD SLOT .047" WIDE X .063" DEEP
(1.2MM X 1.6MM)
M FLATTED .375" X .218"
(9.53MM X5.54MM) WITH SLOT
POSITIONS
02 2 POSITIONS
12 12 POSITIONS,
ETC.
MOUNTING STYLE
BUSHING LENGTH:
1/8" INCREMENTS
EXAMPLES:
2 .250" (6.35MM)
3 .375" (9.5MM)
BUSHING MOUNT
SUPPLIED WITH
LOCATING LUG
LEFT SIDE
TERMINALS DOWN
Order From:
CTS CORPORATION, ELECTROCOMPONENTS / 1601 Mishawaka Street / Elkhart, Indiana 46514
North America Toll Free (888) 287-4690 / (219) 296-6700 / FAX: (219) 293-1240
http://www.ctscorp.com
CTS COMPONENTS TAIWAN, LTD. / 7, Central 6th Road (Chung Liu Road) / P.O. Box 26-20
Kaohsiung Export Processing Zone / Kaohsiung, Taiwan, Rep. of China
(07) 8216145 / FAX: (07) 8417642.8110040
2.5M-6-99
I
Ordering Information
Physical Dimensions
212 T 01 02 N 2 20 R N
DIMENSION:
MM
INCH
DIMENSION:
MM
INCH
Available Terminal Styles
Detent Only
Typical Assembled Switch
T-Style
P-Style
X-Style
U-Style
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