A Specialty Distributor



Call our knowledgable
Staff with your application
questions.

MK2- Series

MK2/4
Magnetically operated Reed Sensor with round cable for screw fastening

Characteristics

MK2/4 sensors are magnetically operated Reed proximity switches designed for screw montage. The sensor should be mounted on a fixed surface with the actuating magnet on the moving surface. The Reed Sensor and the magnet must be fixed in a definite distance to each other.  Approximation resp. removal of the magnet determines the closing and opening of the Reed Switch.  The magnetic pull-in / drop-out sensitivity is divided into five AT ranges.

Applications

• Door and window control
• Position and end switch sensing
• Machinery industry 

Dimensions

Tolerance +/- 0.10mm (0.004 inch)

Termination

The standard termination is a two-wire UL-approved round cable with a cross section of 2 x 0.35mm². The standard cable length is 500mm, other lengths can be supplied on request. The required length has to be stated in 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)

 

Contact Data

Contact type			51	71	81	90
Contact form			A/dry	A/dry	A/dry	B/C/dry
Rated power	max.	(W)	12	10	5	3
Switching voltage	max.	(VDC)	250	1801	90	175
Switching current	max.	(A)	0.5	0.5	0.5	0.25
Carry current		(A)	1.5	1.02	1.0	1.2
Contact resistance	max.	mOhm	150	150	200	150
Breakdown voltage (contact/contact)	min.	(VDC)	350	2103	100	200
Operating time incl. bounce		(ms)	1.0	0.5	0.5	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

¹Range D & E: 200 VDC  ²Range D & E: 1.75 A  ³Range D: 280 VDC; Range E: 310 VDC

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	51/71/90

This data relates to unmodified Reed switches before mounting. Please refer to the respective single data sheets for sensitivity data and measurement methods for finished assemblies.

Order information

Ordering example

MK2/4 - 1A71 C - 500 W

MK2/4 Reed Sensor, 1 form A switch type 71, Sensitivity class C, Cable length 500mm, Termination W

 

To find out about the many more products offered by Meder Electronics, select
"Info Request" from the menu on the left.

| (800) 654-4636 | (330) 725-3705 | Fax (330) 723-3448 | Fax (800) 437-8755 |
sales@rcosales.com


P.O.Box 1198
Medina, Ohio 44258

Copyright © RCO Sales Inc. All Rights Reserved