www.meder.com
Germany # ++49-(0)7731-83990, USA # 800-870-5385
MK7 Series MEDER electronic
Cylindrical Reed Sensors
with M8 Thread
CONTACT DATA
All data at 20
0
C
Switch Model -->
Contact Form -->
Contact 81
Form A
Contact 90
Form B / C
Contact Ratings Conditions
Min. Typ. Max. Min. Typ. Max. Units
Contact Rating
Any DC combination of V & A
not to exceed their individual
max.'s
5 3 W
Switching Voltage DC or peak AC 90 175 V
Switching Current DC or peak AC 0.5 0.25 A
Carry Current DC or peak AC 1.0 1.2 A
Static Contact Resistance w/ 0.5V & 10mA 200 150 mΩ
Dynamic Contact Resistance
Measured w/ 0.5V & 50mA
1.5 ms after closure
200 250 mΩ
Insulation Resistance across
Contacts
100 Volts applied 10
9
10
9
Ω
Breakdown Voltage across
Contacts
Voltage applied for 60 sec.
min.
100 200 VDC
Operate Time, incl. Bounce Measured w/ 100% overdrive 0.5 0.7 ms
Reset Time
Measured w/ no coil
suppression
0.1 1.5 ms
Capacitance @ 10kHz across contact 0.2 1.0 pF
Contact Operation **
Must Operate Condition Steady state field 5 10 15 30 AT
Must Reset Condition Steady state field 2 9 6 27 AT
Environmental Data
Shock Resistance 1/2 sine wave duration 11ms 30 50 g
Vibration Resistance From 10 - 2000 Hz 10 20 g
Ambient Temperature 10
0
C/ minute max. allowable -20 85 -20 85
0
C
Storage Temperature 10
0
C/ minute max. allowable -35 85 -35 85
0
C
Soldering Temperature 5 sec. dwell 260 260
0
C
Please note: The indicated electrical data are maximum values and can vary downwards when using a more sensitive switch.
** These ranges refer to the uncut / unmodified Reed Switches described in our Reed Switch section. Consult factory if more
detail is required.
