MK14 Series

Magnetically operated Reed Sensor in cylindrical case


MK14 sensors are magnetically operated Reed proximity switches in a 4.0 mm diameter miniature module, fitted with interconnect cable.  The sensor should be mounted on a fixed surface with the actuating magnet, e.g. M3, on the moving surface.  The sensor and the magnet must be fixed in a definite distance to each other.  The sensor is mostly operated from the front; approximation resp. removal of the magnet determines the closing or opening of the Reed Switch.  The magnetic pull-in / drop-out sensitivity is divided into five AT ranges.  A choice of switches, termination options and cable lengths are offered.


Position- and limit switch, e.g. pneumatic or hydraulic actuator position indication and end travel limit switch

End motion detection for linear drives

Limit and motion detection for machine industry


Dimension Drawing


The standard termination is a two-wire UL-approved twin core with a cross section of 2 x 0.14mm. The standard length of the cable is 500mm. Other lengths can be supplied on request. The required length has to be noted on the part number.
The cable end can be supplied with the following connection styles (please note after the length in the part number).

W Cable end cut, dismantled on 30 mm, cores stripped and tinned on 5 mm
X Individual crimped terminals 1mm(0.04inch) diameter
Y Individual spade terminals, 2.8 x 0.8mm(0.11 x 0.03inch)
Z “MASCON” sleeve suitable for pcb connector with 2.54mm(0.1inch) pitch

Contact Data

Contact type 71 81 84 90
Contact form A/dry A/dry A/dry B/C/dry
Rated Power max. (W) 10 5 10 3
Switching voltage max. (VDC) 200 90 400 175
Switching current max. (A) 0.5 0.5 0.5 0.25
Carry current (A) 1.0 1.0 1.0 1.2
Contact resistance max. (mOhm) 150 200 150 150
Breakdown voltage (contact/contact) min. (VDC) 250 100 700 200
Operating time incl. bounce (ms) 0.5 0.5 2.0 0.7
Releasing time (ms) 0.1 0.1 0.1 1.0
Operating temperature (°C) -20/+85 -20/+85 -20/+85 -20/+85
Storing temperature (°C) -35/+85 -35/+85 -35/+85 -35/+85

Other switches by request.

Magnetic Sensitivity

Sensitivity class A B C D E
Pull-in AT range 5-10 10-15 15-20 20-25 25-30
Available switches 81 71 71/84/90

Order information

Ordering example

MK14 – 1A71 C – 200 W

MK14 Reed Sensor, 1 form A switch type 71, sensitivity class C, cable length 200mm, connection style W

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