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Industrial mobile broadband 3G router--WESTERMO
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Remote access removes boundaries, eliminates the need for time consuming site visits and provides a network infrastructure suitable for today’s “always-on” society. The MRD-310 industrial mobile broadband router uses the Internet to cost effectively inter-connect systems, allowing HMI, PLCs, sensors etc to communicate with each other.


A compact case design with DIN-rail mounting clips and the wide power input range between 10 to 60 VDC make the unit well suited for industrial applications. Easy integration with other devices is achieved using the built-in two port Ethernet switch and the RS-232 D-sub.

The stability of mobile connections can be affected by various different parameters and in order to ensure constant connectivity the MRD-series features a connection manager.

The MRD-310 offers network protection from malicious eavesdroppers via encrypted communication tunnels (VPN), and features a simple, yet powerful, packet inspection firewall.

For solar powered applications energy efficiency is vital and the MRD-310 has a special low-power mode to only be fully powered when needed. The built-in serial port offers a simple modem replacement solution with the benefit of not having to reprogram or change legacy components during an upgrade.



Product description
Status Active
Article number 3623-0001
Ports 2 x 10 Mbit/s or 100 Mbit/s, Ethernet TX, RJ-45.
1 x 300 bit/s to 115.2 kbit/s, D-sub, RS-232.
1 x SIM slot.
Description Industrial mobile broadband / 3G router
Warranty period 5 Years
Standard compliance
R&TTE Article 3.1a:
EN 60950, Safety
EN 50385, EMF exposure
Article 3.1b:
EN 301 489-1, ERM/EMC
EN 301 489-7, ERM/EMC GSM
EN 301 489-24, ERM/EMC 3G
Article 3.2:
EN 301 908-1, ERM 3G
EN 301 908-2, ERM 3G
EN 301 511, GSM
EMC (Electromagnetic Compatibility)
EN 61000-6-1 Immunity residential environments
EN 61000-6-2 Immunity industrial environments
EN 61000-6-3 Emission residential environments
EN 61000-6-4 Emission industrial environments
EMC specifications
EN 61000-4-2, ESD Enclosure contact, ± 4 kV (crit A)
Enclosure air ± 8 kV (crit A)
IEC 61000-4-3, RF field AM modulated Enclosure, 10 V/m (crit A) (80 – 2700 MHz)
EN 61000-4-4, fast transients Signal ports, ± 1 kV (crit A)
Power ports, ± 2 kV (crit A)
EN 61000-4-5, surge Ethernet ports, ± 1 kV (direct) (crit A)
Power ports, ± 0.5 kV (line to earth) (crit A), ± 0.5 kV (line to line) (crit A)
EN 61000-4-6, conducted RF immunity All ports 10 V/m, (crit A) (0.15 – 80 MHz)
EN 55022, radiated RF emission Enclosure, Class B
EN 55022, conducted emission AC power ports, Class B
Ethernet ports Class B
Safety EN 60950, IT equipment
Temperature, operating –30 to +60ºC (–22 to +140ºF).
Temperature, storage –40 to +85ºC (–40 to +185ºF)
Humidity, operating 0 to 90% relative humidity non condensing
Humidity, storage 0 to 90% relative humidity non condensing
Dimensions (W x H x D) 103 x 55 x 156 mm
Weight 0.30 kg
Degree of protection IP 40
Cooling Convection
Mounting Horizontal on 35 mm DIN-rail
Interface specifications, power
Rated voltage 10 to 60 VDC
Operating voltage 10 to 60 VDC
Rated current 800 mA
Inrush current 1.0 A
Polarity Polarity dependant, reverse polarity protection
Connection Detachable screw terminal
Connector size 0.2 – 2.5 mm2 (AWG 24-12)
Shielded cable Not required
Interface specifications, RS-232
Electrical specification EIA/TIA-232
Data rate 300 bit/s – 230400 bit/s
Data format Data bits: 5, 6, 7 or 8
Stop bits: 1 or 2
Parity: None, Odd or Even
Flow control: None, Software, Hardware or Both
Protocol Transparent, DNP3, Modbus, and Modem emulation
Retiming Yes
Transmission range ≤ 3 m
Connection 9-pin D-sub female (DCE) and 9-pin D-sub male (DTE)
Shielded cable Not required
Interface specifications, Antenna
Frequency bands 850 MHz – 2100 MHz
Connection SMA
Interface specification, SIM
Electrical specification UICC/SIM 3V and 1.8 V
Interface specifications, 10/100BaseTX
Electrical specification IEEE std 802.3 2000 Edition
Data rate 10 Mbit/s, 100 Mbit/s, manual or auto
Duplex Full or half
Transmission range 100 m / 328 ft
Connection RJ-45


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