MRX Series MEDER electronic Ex-approved-Reed Relays DESCRIPTION MRX Reed Relay Series are used for the galvanic separation of intrinsically safe and nonintrinsically safe circuits with an Ex-approval by PTB-01 ATEX 2050 U. The MRX series is also suitable for circuits of the category “ia” due to its peak voltage of 375 Voltage. APPLICATIONS FEATURES • Test and measurement • Process automatization in the mining industry, chemical industry and refineries. • Up to 4 form A switches or 1 form C switch are available according to the different castings. ORDER INFORMATION Part Example No. MRX05 - 1A71 05 is the nominal voltage 1A71 is the contact form COIL DATA Contact form Contact type All Data at 20o 1A/ 1C 2A 4A 21 71 79 90 71 79 71 79 Nominal voltage Coil resistance ± 10% Pull-in voltage Drop-out voltage Nominal power VDC Ω VDC VDC mW 5 360 3.8 1.0 70 6 360 4.5 1.0 100 12 1300 9.0 2.0 110 24 5880 18.0 3.5 98 5 250 3.8 1.0 100 6 250 4.5 1.0 144 12 890 9.0 2.0 160 24 3500 18.0 3.5 165 5 125 3.8 1.0 200 6 125 4.5 1.0 288 12 500 9.0 2.0 288 24 1780 18.0 3.5 324 www.meder.com 168 Ex-approved-Reed Relays DIMENSIONS All Dimensions in mm [inch] 30 14.5 max.max. [0.571] [1.181] 10 max. [0.394] 10 max. [0.394] 5 [0.197] 3.2 ± 0.2 [0.01] [0.126] 10 max. [0.394] 2.5 [0.098] 20 [0.197] 30 max. 27.5 [1.181] [1.083] 2.5 [0.098] 11 max. [0.433] 2.5 [0.098] 10 20 [0.394] [0.197] 3.2 ± 0.2 [0.01] [0.126] 30 max. [1.181] 4A 2A 2.5 [0.098] 22.5 20 [0.886] [0.197] ± 0.2 3.2 [0.01] [0.126] 1A / 1C 3.2 ± 0.2 [0.01] [0.126] 97] MRX Series MEDER electronic PIN OUT (Top View) 1A 1C 2A 4A www.meder.com 169 MEDER electronic MRX Series RELAY DATA All Data at 20° C Contact Ratings Switch Model → Contact form → Conditions Switching Power Any DC combination of V & A not to exceed their individual max‘s. Switching Voltage Switch 71 Form A / dry Switch 79 Form A / dry Min. Typ. Max. Min. Typ. Max. Unit 10 10 W DC or peak AC 200VDC 220VAC Switching Current DC or peak AC 0.5 0.5 A Carry Current DC or peak AC 1 1 A Contact Resistance with 20 mV, 10 mA 150 150 mΩ Isolation Resistance Across contacts Contact to coil 1010 1011 Ω Breakdown Voltage Across contacts Contact to coil 300 400 VDC Operate Time incl. Bounce With nominal voltage 0.5 0.8 ms Release Time Without protective diode 0.2 0.4 ms Capacitance Across open contacts Contact to coil 0.3 2.0 0.4 2.0 pF 1000 1000 106 Cycles Life Expectance Switching 5 Volts & 10m A DC only & <1010 pF stray cap. Environment Data Shock Resistance 1/2 sinus wave duration 11ms 50 50 g Vibration Resistance from 10 - 2000 Hz 20 20 g Ambient Temperature max. 10°C/ minute allowable -20 85 -20 85 o C Storage Temperature max. 10°C/ minute allowable -40 105 -40 105 o C Soldering Temperature 5 Sec. dwell 260 o C 260 Washability Fully sealed www.meder.com 170 MRX Series MEDER electronic RELAY DATA All Data at 20° C Contact Ratings Switch Model → Contact form → Conditions Switching Power Any DC combination of V & A not to exceed their individual max‘s. Switching Voltage Switch 90 Form C / dry Switch 21 Form C / dry Min. Typ. Max. Min. Typ. Max. Unit 7 10 W DC or peak AC 28 100 VDC Switching Current DC or peak AC 0.24 0.25 A Carry Current DC or peak AC 0.5 0.5 A Contact Resistance with 20 mV, 10 mA 150 150 mΩ Isolation Resistance Across contacts Contact to coil 1010 1011 Ω Breakdown Voltage Across contacts Contact to coil 300 400 VDC Operate Time incl. Bounce With nominal voltage 2 2.5 ms Release Time Without protective diode 2 2 ms Capacitance Across open contacts Contact to coil 1.0 2.0 0.8 2.0 pF DC only & <1010 pF stray cap. 100 100 106 Cycles Life Expectance Switching 5 Volts & 10 mA Environment Data Shock Resistance 1/2 sinus wave duration 11ms 50 50 g Vibration Resistance from 10 - 2000 Hz 20 20 g Ambient Temperature max. 10°C/ minute allowable -20 85 -20 85 o C Storage Temperature max. 10°C/ minute allowable -40 105 -40 105 o C Soldering Temperature 5 Sec. dwell 260 o C 260 Washability Fully sealed www.meder.com 171