Series 212
®
CTS 212 Rotary
Switches
Features
• Hill and valley detent
• Balanced double bump detent spring
• Excellent feel
• 30˚ or 60˚ 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
• RoHS compliant
Electrical and Mechanical Specifications
Indexing
Bushing Lengths
Standard: 3/8"-32 UNEF-2A Thread,1/4" (6.35mm)
Double bump spring hill and valley detent with standand
or 3/8" (9.53mm) long.
30° indexing for 2 through 12 positions or with special
Special Lengths: Available as required
60° indexing from 2 to 6 positions.
Special 90° indexing consult CTS
Locating Lugs
Voltage and Current Rating
Standard:Left side .531" (13.5mm) radius
UL Rating: 3/4 amp at 125 VAC (shorting type only)
Special:Right side .531" (13.5mm) radius or no lug
Special Rating: 1/4 amp at 28 VDC (shorting or non shorting)
Shaft Trim
1 amp at 28 VDC (shorting type only)
Standard:Plain round
Contact Resistance
Special:Flat, slot, knurl, or mixed (flat with slot)
15 milliohms max. when measured from adjacent terminals
Frames
Stop Strength
Machine screw, bolt & nut, or rivet construction
15 in-lb (17.3Kgf-cm).
Torque
Lubrication
Up to 48 in-oz. (3.5Kgf-cm).
Special lubrication is used sufficient for the life
of the index assembly under normal hand operation.
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
Detent Spring: Spring brass or nickel silver depending
on torque requirements
Front Plate: Zinc plated or nickel plated plated steel at CTS option
Rotor Contacts, Stator Contacts and Terminals: Silver plated
brass standard
Stator Insulator: Glass reinforced thermoset material
1-3
CTS Electronic Components
© 2006 CTS Corporation. All rights reserved. Information subject to change.
www.ctscorp.com
6/30/05
Physical Dimensions
7.12
.280
1.98
.078
"A"±
0.4
3.56
.140
.016
9.12
.359
28.6
1.125
1.98
.078
L
A
6.35
.250
*
3/8"-32 UNEF 2A THD.
26.98
1.062
33.3
1.312
6.35
.250
3.18
.125
Ø6.35
.250
"L"±
0.8
.031
3.2
.125
13.5
.531
* NOTE :
10.82/.426 DIMENSION BASED UPON USE OF ONE 6.35/.250
SPACE NO SPACERS OR SPACERS OF NUMEROUS LENGTHS
ARE AVAILABLE TO PROVIDE PIN SPACINGS AS REQ'D
11.35
.447
10.82
.426 *
DIMENSION:
mm
INCH
Detent Only
Typical Assembled Switch
Available Terminal Styles
36.6
1.44
39.95
.687
5.74
.226
(7)
1.573
26.98
1.062
36.44
1.433
38.0
1.496
3.7
.146
17.44
.687
2.54
.100 (13)
21.0
17.44
26.2
1.03
22.1
.870
.687
.827
17.44
X-Style
Y-Style
Ø38.76
TO OUTSIDE
1.526
OF TERMINALS
33.32
13.49
.531
Ø1.98
.076
HOLE @ 15°
AS REQUIRED
1.312
15°
26.98
1.062
R15.09
.594
2-CLEARANCE HOLES FOR
#4-40 PANHEAD SCREWS
P.C. BOARD
MOUNTING HOLE
T-Style
Ø2.94±0.05 (2)THR. HOLE
.116±.002
7.88
.310
7.09
.279
4.46
.176
4.95
.279
1.28
.050
2.79
.110
U-Style
DIMENSION:
mm
INCH
P-Style
2-3
CTS Electronic Components
© 2006 CTS Corporation. All rights reserved. Information subject to change.
www.ctscorp.com
9/30/06
Ordering Information
212
T
01 02
POLES
01
– 1 POLE
10
– 10 POLES
ETC.
N
CONTACT TYPE
N
– NON SHORTING
S
– 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
D
– NO
LOCATING
LUG
E
– LOCATING
LUG RIGHT
SIDE
1
INDEX OR
ADJUSTABL STOP
BLANK
– STANDARD
1
– 60° INDEX
2
– 90° INDEX
3
– 30° INDEX
WITH
ADJUSTABLE
STOP
4
– 60° INDEX
WITH
ADJUSTABLE
STOP
5
– 90° INDEX
WITH
ADJUSTABLE
STOP
(BREAK BEFORE MAKE)
MOUNTING STYLE
TERMINAL STYLE
T
– SOLDER LUG
X
– PC
U
– PCFORMED
TO REAR
P
– PC WITH
.100" (2.54mm)
SPACING
Y
– X STYLE WITH
.870" (22.1mm)
MEIGHT STAND OFF.
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 .375" X .156"
(9.53mm X 4.0mm)
K
– KNURLED EIA S148(24 TEETH)
S
– SD SLOT .047" WIDE X .063" DEEP
(1.2mm X 1.6mm)
M
– FLATTED .375” X .218”
(9.53mm X 5.54mm) WITH SLOT
3-3
CTS Electronic Components
© 2006 CTS Corporation. All rights reserved. Information subject to change.
www.ctscorp.com
9/30/06
