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MEDER electronic
Reed Sensors with Screw Fas-
tening Mounting Holes
MK12 Series
CONTACT DATA
All Data at 20° C
Switch Model →
Contact Form →
Switch 52
Form A
Switch 66
Form A
Contact Ratings Conditions Min. Typ. Max. Min. Typ. Max. Unit
Switching Power
Any DC combination of V & A not
to exceed their individual max.‘s
50
70 (VA)
10 W
Switching Voltage DC or peak AC 250 200 V
Switching Current DC or peak AC 0.5 0.5 A
Carry Current DC or peak AC 2.5 1.25 A
Static Contact Resistance w/ 0.5 V & 10mA 200 150 mΩ
Dynamic Contact Resistance
Measured w/ 0.5 V & 50 mA ,
1.5 ms after closure
200 mΩ
Insulation Resistance across
Contacts
100 volts applied 10
10
10
10
* Ω
Breakdown Voltage across
Contact
Voltage applied for 60 sec. min.
600 225*
VDC
Operate Time incl. Bounce Measured w/ 100 % overdrive 1.0 0.5 ms
Release Time Measured w/ no coil suppression 0.1 0.1 ms
Capacitance at 10 kHz cross contact 0.2 0.2 pF
Contact Operation **
Must Operate Condition Steady state eld 10 30 10 60 AT
Must Release Condition Steady state eld 4 27 4 54 AT
Environmental Data
Shock Resistance 1/2 sinus wave duration 11 ms 50 50 g
Vibration Resistance From 10 - 2000 Hz 20 20 g
Ambient Temperature 10°C/ minute max. allowable -20 85 -20 85
o
C
Stock Temperature 10°C/ minute max. allowable -35 85 -35 85
o
C
Soldering Temperature 5 sec. dwell 260 260
o
C
Please note: The indicated electrical data are maximum values and can vary downwards when using a more sensitive
switch.
* Insulation resistance of 10
12
and breakdown voltage of 480 VDC is available.
** These ranges refer to the uncut / unmodied Reed Switches described in our Reed Switch section. Consult factory if more
detail is required.
