MEDER MK21M-1A66B-500W

MEDER electronic
MK21 Series
Reed Sensors with Mounting
Holes for Screw Fastening
DESCRIPTION
MK21 sensors are magnetically operated Reed
proximity switches designed for screw mounting.
The sensor should be mounted on a fixed surface
with the actuating magnet on the moving surface.
Introduction or removal of the magnetic field
determines the closing and opening of the Reed
Switch. Leads are teflon coated. Designed for
extreme environment. Resistant to water, fuels, oils,
inks and most acids.
APPLICATIONS
• Position and limit switch
Pneumatic or hydraulic actuator position
• End motion detection for linear drive
Indication and end travel limit switch
• Machine industry
End motion detection and door/flap control
FEATURES
• High power switches available
• Designed for high temperature up to 160 oC
(molded version)
• Four operate sensitivities available
• A choice of cable terminations and lengths are
available
• Molded and potted versions available
DIMENSIONS
All dimensions in mm [inches]
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Europe # ++49-(0)7733-94870, USA # 800-870-5385
MK21 Series
MEDER electronic
Reed Sensors with Mounting
Holes for Screw Fastening
ORDER INFORMATION
Part Number Example
Series
Contactform
Switch
Model
Magnetic
Sensitivity
Cable
Length
(mm)
Termination
MK21X -
XX
XX
X-
XXX
W
66
B, C, D, E
84
C, D, E
90
C, D, E
1 Form A
Options
1 Form B“*
1 Form C**
MK21M - 1A66 C - 500
MK21P - 1A66 C - 500
W
W
M = molded
P = potted
500*
66 is the switch model
C is the magnetic sensitivity
500 is the cable length (mm)
* Other cable lengths available
** Potted version
MAGNETIC SENSITIVITY
Sensitivity
Class
Pull IN
At Range
B
10 - 15
C
15 - 25
D
20 - 25
E
25 - 30
TERMINATION
For wire and termination details, as well as other magnetic sensitivity classes please contact factory.
W
The cable cut length includes:
5 mm of wire stripped and tinned.
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Europe # ++49-(0)7733-94870, USA # 800-870-5385
229
MEDER electronic
MK21 Series
Reed Sensors with Mounting
Holes for Screw Fastening
CONTACT DATA
Switch Model -->
Contact Form -->
All Data at 20° C
Contact Ratings
Conditions
Switch 66
Form A
Switch 84
Form A
Switch 90
Form B/C, potted
Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. Units
Switching Power
Any DC combination of V & A
not to exceed their individual
max.‘s
10
10
3
W
Switching Voltage
DC or peak AC
200
400
175
V
Switching Current
DC or peak AC
0.5
0.5
0.25
A
Carry Current
DC or peak AC
1.25
1.0
1.2
A
Static Contact Resistance
w/ 0.5 V & 10 mA
150
150
150
mΩ
Dynamic Contact Resistance
Measured w/ 0.5 V & 50 mA ,
1.5 ms after closure
200
200
250
mΩ
Insulation Resistance across
100 volts applied
Contact
1010*
1011
109
Ω
Breakdown Voltage across
Contact
225*
700
200
VDC
Voltage applied for 60 sec.
min.
Operation Time incl. Bounce Measured w/ 100 % overdrive
Release Time
Measured w/ no coil
suppression
Capacitance
at 10 kHz cross contact
0.5
2.0
0.7
ms
0.1
0.1
1.5
ms
0.2
0.7
pF
Environmental Data
Shock Resistance
1/2 sinus wave duration 11 ms
50
50
50
Vibration Resistance
From 10 - 2000 Hz
20
20
20
g
g
Ambient Temperature
M 10°C/ minute max. allowable
-30
150**
-30
150
-20
Ambient Temperature
P 10°C/ minute max. allowable
-20
85
-20
85
-35
Stock Temperature
10°C/ minute max. allowable
-40
160
-40
160
85
o
C
Soldering Temperature
5 sec.
260
260
o
C
260
o
C
85
o
C
Please note: The indicated electrical data are maximum values and can vary downwards when using a more sensitive switch.
* Insulation resistance of 1012 and breakdown voltage of 480 VDC is available.
** These ranges refer to the uncut / unmodified Reed Switches described in our Reed Switch section. Consult factory if more detail is
required.
www.meder.com
230
Europe # ++49-(0)7733-94870, USA # 800-870-5385