Series 212
®
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
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 1448C
Technical Data Sheet 4212
CTS CORPORATION /
MANUFACTURER OF RELIABLE ELECTRONIC COMPONENTS
Physical Dimensions
DIMENSION:
MM
INCH
Detent Only
Typical Assembled Switch
MM
INCH
Available Terminal Styles
DIMENSION:
T-Style
P-Style
X-Style
U-Style
Ordering Information
212
DETENT STYLE
30° INDEX
212
– HILL &
VALLEY
T
01
POLES
01
– 1 POLE
10
– 10 POLES
ETC.
02
N
CONTACT TYPE
N
– NON SHORTING
(BREAK BEFORE MAKE)
2
20
SHAFT FMS
1/32" INCREMENTS
20
– .625" (15.9MM)
24
– .750" (19.1MM)
28
– .875" (22.2MM)
32
– 1.000" (25.4MM)
R
N
SPECIALS
N
– NONE
A
– ADJUSTABLE
STOP
60˚ INDEX
B
–
C
–
90˚ INDEX
D
–
NO
LOCATING
LUG
E
– LOCATING
LUG RIGHT
SIDE
S
– SHORTING
(MAKE BEFORE BREAK)
MOUNTING STYLE
TERMINAL STYLE
T
– SOLDER LUG
X
– PC
U
– PC FORMED
TO REAR
P
– X STYLE WITH
.100" (2.54MM)
SPACING
BUSHING LENGTH:
1/8" INCREMENTS
POSITIONS
02
– 2 POSITIONS
12
– 12 POSITIONS,
ETC.
EXAMPLES:
2
– .250" (6.35MM)
3
– .375" (9.5MM)
BUSHING MOUNT
SUPPLIED WITH
LOCATING LUG
LEFT SIDE
TERMINALS DOWN
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
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-6-99I
Electronics Design Contest
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