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MEDER electronic

MK21 Series

Reed Sensors with Mounting

Holes for Screw Fastening

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 & 10 mA

200

150

mΩ

Dynamic Contact Resistance Measured w/ 0.5 V & 50 mA ,

1.5 ms after closure

200

mΩ

Insulation Resistance across

Contact

100 volts applied

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 field

10

30

10

60

AT

Must Release Condition

Steady state field

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

M 10°C/ minute max. allowable

-20

85

-30

150

o

C

Ambient Temperature

P 10°C/ minute max. allowable

-35

85

-20

85

o

C

Stock Temperature

10°C/ minute max. allowable

260

-40

160

o

C

Soldering Temperature

5 sec.

260

260

o

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.