A Global Leader in the Design, Development, and
Manufacture of Sensor and Magnetic Components
KSK-1A87
Reed Switches
Features: Miniature, Long Life
Applications: Rotary Detection, Level Sensor, Metering & Others
Markets: Fluid Flow, Test & Measurement, Automotive & Others
Series Datasheet – KSK-1A87 Reed Switches www.standexmeder.com
Part
Description: K S K - 1 A 87 XX XX
Contact QTY Contact Form Switch Model Pull-In Excitation
(AT-Range)
1 A (SPST-NO) 87 10 - 45
Contact Data
Unit
Rated Power
(max.)
Any
DC combination of V&A not to exceed their individual max.’s 10 W
Switching Voltage
(max.)
DC or
peak AC 200 V
Switching Current
(max.)
DC
or peak AC 0.4 A
Carry Current
(max.)
DC
or peak AC 0.5 A
Contact Resistance
(max.)
@
0.5V & 10mA 150 mOhm
Breakdown
Voltage (min.)
DC
or peak AC 230 V
Operating Time (max.)
Incl. Bounce; Measured with 40% Overdrive
0.6 ms
Release
Time (max.)
Measured
with no Coil Excitation 0.1 ms
Test
Coil KMS-01
Insulation
Resistance (min.)
RH <
45%, 100 V Test Voltage 109 Ohm
Capacitance (typ.)
@ 10kHz
across open Switch 0.2 pF
Modifications in the sense of technical progress are reserved.
Version 01
27.01.2015
USA: +1.866.782.6339 │ salesusa@standexmeder.com
Europe: +49.7731.8399.0 │ info@standexmeder.com
Asia: +86.21.37820625 │ salesasia@standexmeder.com
KSK
-1A87 Reed Switch
Life Test Data
*Load increase reduces life
expectancy of Reed Switches
A Global Leader in the Design, Development, and
Manufacture of Sensor and Magnetic Components
Series Datasheet – KSK-1A87 Reed Switches www.standexmeder.com
Environmental
Data Unit
Shock Resistance (max.)
1/2 sine wave duration 11ms
50 g
Vibration
Resistance (max.) 20 g
Operating Temperature
-40 to 130 °C
Storage Temperature
-55 to 130 °C
Soldering
Temperature (max.)
5 sec. max.
260 °C
Dimensions
(mm)
Overall
Length (max.) 35.7
Glass
Length (max.) 10.0
Glass
Dia (max.) 2.0
Lead Dia. (max.)
0.4
Handling
& Assembly Instructions
Use proper lead clamping or heat sinking techniques to
prevent mechanical and/or heat stress to the glass seal
during bending, cutting, soldering, and welding
Mechanical shock as the result of dropping the reed switch
typically from a distance of greater than 12” may change it’s
magnetic sensitivity and/or destroy the switch
Any form of modification to the switch leads will alter it’s
magnetic sensitivity
Series resistor recommended for >5m cable length
Glossary Contact
Form
Form
A
NO = Normally Open Contacts
SPST = Single Pole Single
Throw
Form B
NC = Normally Closed
Contacts
SPST
= Single Pole Single Throw
Form C
Changeover
SPDT = Single Pole Double
Throw
Modifications in the sense of technical progress are reserved.
Version 01
27.01.2015
USA: +1.866.782.6339 │ salesusa@standexmeder.com
Europe: +49.7731.8399.0 │ info@standexmeder.com
Asia: +86.21.37820625 │ salesasia@standexmeder.com
