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
51单片机
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