A Global Leader in the Design, Development, and Manufacture of Sensor and Magnetic Components www.standexmeder.com Series Datasheet - MRX Reed Relays MRX Series Reed Relays Features: Ex-Approved for Intrinsic Safety Circuits Applications: Process Automatization in Refineries, Mining and Chemical Industry & Others Markets: Explosive Environment & Others MRX 00-0X00 Part Description: Nominal Voltage Contact QTY Contact Form Switch Model 05, 12, 24 1, 2, 4 A, C 21, 71, 79, 90 Customer Options Contact Data 21 71 79 90 Rated Power (max.) 5 10 10 7 W 100 200 250 28 V 0.25 0.5 0.5 0.24 A 0.5 1.25 1 0.5 A 150 150 150 150 mOhm 0.25 0.3 0.4 0.25 kVDC 2.5 0.5 0.5 2 ms 2 0.1 0.2 2 ms 109 1010 1011 109 Ohm 0.8 0.3 0.4 1.0 pF Switch Model Any DC combination of V&A not to exceed their individual max.'s Switching Voltage (max.) DC or peak AC Switching Current (max.) DC or peak AC Carry Current (max.) DC or peak AC Contact Resistance (max.) @ 0.5V & 50mA Breakdown Voltage (min.) According to EN60255-5 Operating Time (max.) Incl. Bounce; Measured with w/ Nominal Voltage Release Time (max.) Measured with no Coil Excitation Insulation Resistance (typ.) Rh<45%, 100V Test Voltage Capacitance (typ.) @ 10kHz across open Switch USA: Europe: Asia: +1.866.782.6339 +49.7731.8399.0 +86.21.37820625 salesusa@standexmeder.com info@standexmeder.com salesasia@standexmeder.com Modifications in the sense of technical progress are reserved. Unit Version 01 27.01.2015 A Global Leader in the Design, Development, and Manufacture of Sensor and Magnetic Components www.standexmeder.com Series Datasheet - MRX Reed Relays Coil Data Contact Switch Form Model Unit 1A 71 79* 2A 71 79** 4A 71 1C 21*** 90 Coil Voltage (nom.) Coil Resistance (typ.) Pull-In Voltage (max.) Drop-Out Voltage (min.) Nominal Coil Power (typ.) VDC 05 12 24 05 12 24 24 05 12 24 Ohm 360 305 5,880 250 890 1,000 1,780 360 305 5,880 VDC 3.8 9 18 3.8 9 18 18 3.8 9 18 VDC 1.0 2 3.5 1.0 2 3.5 3.5 1.0 2 3.5 mW 70 110 100 100 260 165 320 70 110 100 The Pull-In / Drop-Out Voltage and Coil Resistance will change at rate of 0.4% per C. *1A79 only available with Coil Voltage 12 ** 2A79 only available with Coil Voltage 24 ***1C21 only available with Coil Voltage 05 & 12 Environmental Data MRX Reed Relay Unit Shock Resistance (max.) 50 g 20 g Operating Temperature -20 to 85 C Storage Temperature Soldering Temperature (max.) -40 to 105 C 260 C 1/2 sine wave duration 11ms Vibration Resistance (max.) 5 sec. max. Handling & Assembly Instructions Switching inductive and/or capacitive loads create voltage and/or current peaks, which may damage the relay. Protective circuits need to be used. External magnetic fields needs to be taken into consideration, including a too high packing density. This may influence the relays' electrical characteristics. Mechanical shock impacts e.g. dropping the relays may cause immediate or post-installation failure. Wave soldering: maximum 260/5 seconds. Reflow soldering: Recommendations given by the soldering paste manufacturer need to be considered as well as the temperature limits of other components/processes. USA: Europe: Asia: +1.866.782.6339 +49.7731.8399.0 +86.21.37820625 Life Test Data *Load increase reduces life expectancy of Reed Switches salesusa@standexmeder.com info@standexmeder.com salesasia@standexmeder.com Modifications in the sense of technical progress are reserved. Version 01 27.01.2015 A Global Leader in the Design, Development, and Manufacture of Sensor and Magnetic Components www.standexmeder.com Series Datasheet - MRX Reed Relays Glossary Contact Form Form A NO = Normally Open Contacts SPST = Single Pole Single Throw Form B NC = Normally Closed Contacts SPST = Single Pole Single Throw Form C Changeover SPDT = Single Pole Double Throw Pin Out Top View USA: Europe: Asia: +1.866.782.6339 +49.7731.8399.0 +86.21.37820625 salesusa@standexmeder.com info@standexmeder.com salesasia@standexmeder.com Modifications in the sense of technical progress are reserved. Version 01 27.01.2015