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 © 2007 CTS Corporation. All rights reserved. Information subject to change. 01/19/07 www.ctscorp.com Physical Dimensions 7.12 .280 9.12 .359 1.98 .078 "A"± 3.56 .140 28.6 1.125 0.4 .016 L A 33.3 6.35 .250 3.18 .125 3.2 .125 0.8 .031 1.312 26.98 1.062 3/8"-32 UNEF 2A THD. Ø6.35 .250 "L"± 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 DIMENSION: mm Detent Only INCH 6.35 .250 * 1.98 .078 11.35 10.82 .447 .426 * Typical Assembled Switch Available Terminal Styles 17.44 39.95 1.573 17.44 .687 .827 5.74 .226 .687 (7) X-Style .076 HOLE @ 15° 1.062 Ø1.98 .531 1.312 15° 13.49 26.98 Ø38.76 TO OUTSIDE 1.526 OF TERMINALS Y-Style 33.32 26.2 1.03 22.1 .870 21.0 36.6 1.44 AS REQUIRED Ø2.94±0.05 (2)THR. HOLE .116±.002 26.98 1.062 R15.09 .594 T-Style 2-CLEARANCE HOLES FOR 7.09 .279 4.46 4.95 .279 1.28 .050 2.79 .110 U-Style DIMENSION: mm 17.44 .687 .176 2.54 .100 (13) 3.7 .146 7.88 .310 36.44 1.433 #4-40 PANHEAD SCREWS P.C. BOARD MOUNTING HOLE 38.0 1.496 P-Style INCH 2-3 CTS Electronic Components © 2007 CTS Corporation. All rights reserved. Information subject to change. 01/19/07 www.ctscorp.com Ordering Information 212 T 01 02 N POLES CONTACT TYPE 01 – 1 POLE 10 – 10 POLES ETC. N – NON SHORTING (BREAK BEFORE MAKE) S – SHORTING (BREAK BEFORE MAKE) 2 20 R SHAFT FMS 1/32" INCREMENTS 20 – .625" (15.9mm) 24 – .750" (19.1mm) 28 – .875" (22.2mm) 32 – 1.000" (25.4mm) MOUNTING STYLE BUSHING LENGTH: 1/8" INCREMENTS 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. 3-3 CTS Electronic Components 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 N SPECIALS N – NONE D – NO LOCATING LUG E – LOCATING LUG RIGHT SIDE 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 © 2007 CTS Corporation. All rights reserved. Information subject to change. 1 INDEX OR ADJUSTABL STOP BLANK – STANDARD 1 – 60° INDEX 2 – 30° INDEX WITH ADJUSTABLE STOP 3 – 60° INDEX WITH ADJUSTABLE STOP 01/19/07 www.ctscorp.com