C&K® Switch Datasheet
KDS Series
Intrusion Switches
Switches
Description
KDS series intrusion switches are used to power intrusion/alarm
switches in network desktop PCs, in cellular base stations and in
telecommunications equipment. C&K’s KDS series are RoHS
compliant, available in either N.O. or N.C. configurations and have
an easily customizable wire harness length and connector. In
addition, these switches are designed to slot mount directly into
the chassis, helping to reduce installation costs.
Features & Benefits
■ Slot mount into chassis to
■ Available in N.O. or N.C.
reduce installation cost
configuration
■ Wire harness length &
■ RoHS compliant
connector easily customized
Applications
Specifications
■ Intrusion/Alarm switch in
network desktop PC
■ Intrusion/Alarm switch in
telecommunication
equipment
■ Intrusion/Alarm switch in
cellular base station
Contact Rating
0.4 VA max. @ 20 VAC or DC
Mechanical/Electrical Life
10,000 actuations min. at full load
200 m Ω max. initial @ 2-4 V DC,
100 mA
Contact Resistance
109 Ω min.
Insulation Resistance
Materials
Operating Temperature
-40°C to 85°C
Housing/Actuator
Movable Contact
Fixed Contact
Wire
Nylon 6/6 (UL 94V-0)
Copper alloy, gold plate over nickel plate
Brass, gold plate over nickel plate
UL 1061-24 AWG
KDS11: Travel to make from 1.9 mm
to 5.9 mm1
KDS33: No pre-travel, full travel 0.403”
Travel
Dielectric Strength
Packaging
500 Vrms min. @ sea level
Bulk packaging
Notes
1. Specifications and materials listed above are for switches with standard options. For information on specific
and custom switches, consult Customer Service Center.
Ordering Number
Part number list is shown below. For individual part details, please refer to the following pages.
Part Number (Part Description)
Product Details
KDS11
KDS33
Intrusion switches normally open
Intrusion switches normally close
© 2023 Littelfuse, Inc.
Specifications are subject to change without notice.
1
Revised: CM.10/12/23