RS940G NC

Product Description


The RuggedSwitch® RS940G is an industrially hardened, fully managed Ethernet switch providing six or eight ports of Gigabit Ethernet. Six 10/100/1000BaseTX triple speed copper ports are standard. An additional two gigabit fiber or copper ports can be added. The RS940G provides a cost effective way of connecting a cluster of field devices to a Gigabit Ethernet backbone.

Designed to operate reliably in harsh industrial environments the RS940G provides a high level of immunity to electromagnetic interference and heavy electrical surges typical of environments found in electric utility substations, process control or in curb side traffic control cabinets. An operating temperature range of -40°C to +85°C coupled with hazardous location certification, optional conformal coating and a galvanized steel enclosure allows the RS940G to be placed in almost any location.

The embedded Rugged Operating System (ROS®) provides advanced networking features such as Enhanced Rapid Spanning Tree (eRSTPTM), Port Rate Limiting and a full array of intelligent functionality for high network availability and manageability.

The versatility and wide selection of fiber optics allows the RS940G to be used in a variety of applications. The RS940G provides two fiber optical Gigabit Ethernet ports for creating a fiber optical backbone with high noise immunity and long haul connectivity.

The embedded Rugged Operating System (ROS®) provides advanced layer 2 and layer 3 networking functions, and advanced cyber security features. Coupled with the ruggedized hardware design, RS940G is ideal for creating missioncritical, real-time, control applications where high reliability and availability is of paramount importance.

Product Features & Specs


Ethernet Ports

  • 6 - 10/100/1000BaseTX Triple Speed Copper Ports Standard
  • Optional 2 additional 1000LX SFP Pluggable Gigabit Fiber
  • 2 - 10/100/1000BaseTX copper ports
  • Long haul optics allow Gigabit distances up to 70km

Cyber Security Features

  • Multi-level user passwords
  • SSH/SSL (128-bit encryption)
  • Enable/disable ports, MAC based port security
  • Port based network access control (802.1x)
  • VLAN (802.1Q) to segregate and secure network traffic
  • RADIUS centralized password management
  • SNMPv3 authentication and 56-bit encryption

RuggedRated™ for Reliability
in Harsh Environments

  • Immunity to EMI and heavy electrical surges
    • Meets IEEE 1613 
      (electric utility substations)
    • Exceeds IEC 61850-3 
      (electric utility substations)
    • Exceeds IEC 61800-3 
      (variable speed drive systems)
    • Exceeds IEC 61000-6-2 
      (generic industrial)
    • Exceeds NEMA TS-2 
      (traffic control equipment)
  • Hazardous Location Certification: 
    Class 1 Division 2
  • -40°C to +85°C operating temperature 
    (no fans)
  • Conformal coated printed circuit boards (optional)

Rugged Operating System (ROS®) Features

  • Simple plug and play operation - automatic learning, negotiation, and crossover detection
  • MSTP (802.1Q-2005, formerly 802.1s)
  • RSTP (802.1w) and Enhanced Rapid Spanning Tree (eRSTP™) network fault recovery (<5ms)
  • Quality of Service (802.1p) for 
    real-time traffic
  • VLAN (802.1Q) with double tagging and GVRP support
  • Link aggregation (802.3ad)
  • IGMP Snooping for multicast filtering
  • Port Rate Limiting and Broadcast Storm Limiting
  • Port configuration, status, statistics, mirroring, security
  • Industrial automation features 
    (eg. Modbus)

Management Tools

  • Web-based, Telnet, CLI management interfaces
  • SNMP v1/v2/v3 (56-bit encryption)
  • Remote Monitoring (RMON)
  • Rich set of diagnostics with logging and alarms

Universal Power Supply Options

  • Fully integrated power supply
  • Universal high-voltage range: 88-300VDC or 85-264VAC
  • Dual low-voltage DC inputs:
    24VDC (10-36VDC) or 48VDC (36-72VDC)
  • Terminal blocks for reliable maintenance free connections
  • CSA/UL 60950 safety approved to +85°C