MEDER electronic MK4 Series Reed Sensors for Screw Fastening DESCRIPTION MK4 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. APPLICATIONS • Position and limit switch Pneumatic or hydraulic actuator position indication and end travel limit switch • Door and window contacts Security system applications • Level sensor Use with magnetic floats for water level detection in coffee makers, washing FEATURES machines or dishwashers • Form A, B, and C available • High power switches available • Other cables, connectors and colors available • Various case sizes available • Five operate sensitivities available • A choice of switch terminations and cable lengths are available DIMENSIONS All dimensions in mm [inches] www.meder.com Germany # ++49-(0)7733-94870, USA # 800-870-5385 MK4 Series MEDER electronic Reed Sensors for Screw Fastening ORDER INFORMATION Part Number Example CABLE CONTACT SWITCH MAGNETIC SERIES LENGTH TERMINATION FORM MODEL SENSITIVITY (mm) MK4 - 1A71 C - 500 W MK4 - XX XX X - XXX X 1A is the contact form 71 B, C, D, E 71 is the switch model C is the magnetic sensitivity 1 Form A 81 A 500 is the cable length (mm) OPTIONS 500 * W, X, Y W is the termination 84 C, D, E 1 Form B 90 1 Form C * Other cable lengths available. MAGNETIC SENSITIVITY SENSITIVITY PULL IN CLASS AT RANGE A 5 - 10 B 10 - 15 C 15 - 20 D 20 - 25 E 25 - 30 TERMINATION For wire and termination details please consult factory. Form C version requires 3 conductors. www.meder.com Germany # ++49-(0)7733-94870, USA # 800-870-5385 MEDER electronic MK4 Series Reed Sensors for Screw Fastening CONTACT DATA Switch Model --> Contact 71 Contact 81 0 All data at 20 C Contact Form --> Form A Form A Contact Ratings Conditions Min. Typ. Max. Min. Typ. Max. Units Any DC combination of V & A Contact Rating not to exceed their individual 10 5 W max.'s Switching Voltage DC or peak AC 200 90 V Switching Current DC or peak AC 0.5 0.5 A Carry Current DC or peak AC 1.25 1.0 A Static Contact Resistance w/ 0.5V & 10mA 150 200 mΩ Measured w/ 0.5V & 50mA Dynamic Contact Resistance 200 200 mΩ 1.5 ms after closure Insulation Resistance across 10 9 Ω 100 Volts applied 10 * 10 Contacts Breakdown Voltage across Voltage applied for 60 sec. 225 * 100 VDC Contacts min. Operate Time, incl. Bounce Measured w/ 100% overdrive 0.5 0.5 ms Measured w/ no coil Release Time 0.1 0.1 ms suppression Capacitance @ 10kHz across contact 0.2 0.2 pF Contact Operation ** Must Operate Condition Steady state field 10 30 5 10 AT Must Release Condition Steady state field 4 27 2 9 AT Environmental Data Shock Resistance 1/2 sine wave duration 11ms 50 30 g Vibration Resistance From 10 - 2000 Hz 20 10 g 0 0 Ambient Temperature 10 C/ minute max. allowable -20 85 -20 85 C 0 0 Storage Temperature 10 C/ minute max. allowable -35 85 -35 85 C 0 Soldering Temperature 5 sec. dwell 260 260 C Please note: The indicated electrical data are maximum values and can vary downwards when using a more sensitive switch. 12 * Insulation resistance of 10 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 Germany # ++49-(0)7733-94870, USA # 800-870-5385 MK4 Series MEDER electronic Reed Sensors for Screw Fastening CONTACT DATA Switch Model --> Contact 84 Contact 90 0 All data at 20 C Contact Form --> Form A Form B / C Contact Ratings Conditions Min. Typ. Max. Min. Typ. Max. Units Any DC combination of V & A Contact Rating not to exceed their individual 10 3 W max.'s Switching Voltage DC or peak AC 400 175 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 150 150 mΩ Measured w/ 0.5V & 50mA Dynamic Contact Resistance 200 250 mΩ 1.5 ms after closure Insulation Resistance across 11 9 100 Volts applied 10 10 Ω Contacts Breakdown Voltage across Voltage applied for 60 sec. 700 200 VDC Contacts min. Operate Time, incl. Bounce Measured w/ 100% overdrive 2.0 0.7 ms Measured w/ no coil Reset Time 0.1 1.5 ms suppression Capacitance @ 10kHz across contact 0.7 1.0 pF Contact Operation ** Must Operate Condition Steady state field 15 30 10 35 AT Must Reset Condition Steady state field 6 27 4 30 AT Environmental Data Shock Resistance 1/2 sine wave duration 11ms 50 50 g Vibration Resistance From 10 - 2000 Hz 20 20 g 0 0 Ambient Temperature 10 C/ minute max. allowable -20 85 -20 85 C 0 0 Storage Temperature 10 C/ minute max. allowable -35 85 -35 85 C 0 Soldering Temperature 5 sec. dwell 260 260 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. www.meder.com Germany # ++49-(0)7733-94870, USA # 800-870-5385