Moxa

MDS-G4020-L3-4XGS Series

4XG+16G-port Layer 3 full Gigabit modular managed Ethernet switches

MDS-G4020-L3-4XGS Series

Features and Benefits

  • Layer 3 routing interconnects multiple LAN segments
  • Multiple interface type modules for greater versatility
  • Up to 16 Gigabit Ethernet ports or SFP slots plus 4 embedded 10G Ethernet ports
  • Tool-free design for effortlessly adding or replacing modules without shutting down the switch
  • Ultra-compact size and multiple mounting options for flexible installation
  • Passive backplane to minimize maintenance efforts
  • Rugged die-cast design for use in harsh environments
  • Intuitive, HTML5-based web interface for a seamless experience across different platforms
  • High EMC immunity compliant with IEC 61850-3 and IEEE 1613
  • Hardware-based IEEE 1588 PTP for high-precision time synchronization

Certifications

  • CE
  • FCC
  • NEMA TS2
  • En50121 4

Introduction

The MDS-G4020-L3-4XGS Series modular switches support 4 10GbE + 16 Gigabit ports, including 4 embedded ports, 4 interface module expansion slots, and 2 power module slots to ensure sufficient flexibility for a variety of applications. The highly compact MDS-G4020-L3-4XGS Series is designed to meet evolving network requirements, ensuring effortless installation and maintenance, and features a hot-swappable module design that enables you to easily change or add modules without shutting down the switch or interrupting network operations. The multiple types of interface modules (RJ45, SFP, and PoE++) and power units (24/48 VDC and 110/220 VAC/VDC) provide even greater flexibility as well as suitability for different operating conditions, delivering an adaptive full Gigabit platform that provides the versatility and bandwidth necessary to serve as an Ethernet aggregation/edge switch. Featuring a compact design that fits in confined spaces, multiple mounting methods, and convenient tool-free module installation, the MDS-G4020-L3-4XGS Series switches enable versatile and effortless deployment without the need for highly skilled engineers. With multiple industry certifications and a highly durable housing, the MDS-G4020-L3-4XGS Series can reliably operate in tough and hazardous environments such as power substations, mining sites, ITS, and oil and gas applications. Support for dual LV or HV power modules provides redundancy for high reliability and availability and also offers flexibility to accommodate the power requirements of different applications. Support for Layer 3 routing functionality enables these switches to facilitate the deployment of applications across different networks, making them ideal for large-scale industrial networks. In addition, the MDS-G4020-L3-4XGS Series features an HTML5-based, user-friendly web interface providing a responsive, smooth user experience across different platforms and browsers.

Models in this series (1)

MDS-G4020-L3-4XGS-T
Layer3
Total No. of Ports20
10G SFP+ Slots4
100/1000Base SFP SlotsUp to 16
10/100/1000BaseT(X) Ports RJ45 ConnectorUp to 16
10/100BaseT(X) Ports RJ45 ConnectorUp to 16
Operating Temp.-40 to 75°C
Add to Quote View Bag Buy from distributors (for USA only)

Specifications

Ethernet Interface

Pre-installed Modules
4 embedded 10GbE ports
Module
4 slots for optional FE/GbE modules
Slot Combination
See the LM-7000H module series datasheet for more information. Note: The required power module depends on the choice of LM-7000H module. Refer to the following power/module combination requirements. LM-7000H non-PoE modules: Any power module LM-7000H PoE modules: PWR-HV-P48-A, PWR-LV-P48-A only
Standards
IEEE 802.3 for 10BaseT IEEE 802.3u for 100BaseT(X) and 100BaseFX IEEE 802.3ab for 1000BaseT(X) IEEE 802.3z for 1000BaseX IEEE 802.3x for flow control IEEE 802.3ad for Port Trunk with LACP IEEE 802.1Q for VLAN Tagging IEEE 802.1D-2004 for Spanning Tree Protocol IEEE 802.1w for Rapid Spanning Tree Protocol IEEE 802.1p for Class of Service IEEE 802.1X for authentication

Ethernet Software Features

Management
IPv4 ARP Back Pressure Flow Control DHCP Relay Agent (Option 82) Fiber check Flow control RARP LLDP Linkup Delay Port Mirroring (SPAN, RSPAN) SMTP SNMP Trap SNMP Inform SNMPv1/v2c/v3 RMON TFTP SFTP HTTP HTTPS Telnet Syslog Private MIB
Filter
GMRP GVRP GARP 802.1Q VLAN IGMP Snooping v1/v2/v3 IGMP Querier
Redundancy Protocols
STP RSTP Turbo Ring v2 Turbo Chain Ring Coupling Link Aggregation MRP MSTP Network Loop Protection MRP Interconnection Multiple Dual Homing Multiple Network Coupling Tracking
Routing Redundancy
VRRP
Security
Broadcast storm protection DHCP Snooping Dynamic ARP Inspection IP Source Guard MAC Authentication Bypass MAC Sticky HTTPS/SSL SSH RADIUS Rate Limit Trust access control Static Port Lock TACACS+ Login and Password Policy Secure Boot Access control list IEEE 802.1AE MAC security (not supported on 10GbE ports)
Time Management
SNTP IEEE 1588v2 PTP (hardware-based) Supported power profiles: IEEE 1588 Default 2008, IEC 61850-9-3-2016, IEEE C37.238-2017 NTP Server/Client NTP Authentication
Protocols
IPv4 TCP/IP UDP ICMP ARP RARP TFTP DNS NTP Client 802.1X QoS HTTPS HTTP Telnet SMTP SNMPv1/v2c/v3 RMON Syslog VLAN Assignment
Industrial Protocols
EtherNet/IP Modbus TCP PROFINET
Unicast Routing
OSPF Static Route
Multicast Routing
Multicast Local Route PIM-DM PIM-SM
MIB
P-BRIDGE MIB Q-BRIDGE-MIB IEEE8021-SPANNING-TREE-MIB IEEE8021-PAE-MIB IEEE8023-LAG-MIB LLDP-EXT-DOT1-MIB LLDP-EXT-DOT3-MIB SNMPv2-MIB RMON MIB Groups 1, 2, 3, 9
Power Substation
GOOSE Check MMS 1588 PTP Power Profile IEC 61850-9-3 1588 PTP Power Profile C37.238-2017

Switch Properties

MAC Table Size
16 K
Max. No. of VLANs
256
VLAN ID Range
VID 1 to 4094
IGMP Groups
1024
Jumbo Frame Size
9.216 KB
Priority Queues
8
Packet Buffer Size
12 Mbits

LED Interface

LED Indicators
PWR, EPS, STATE, SYNC, FAULT, MSTR/HEAD, CPLR/TAIL

Serial Interface

Console Port
RS-232 (RJ45)

USB Interface

USB Connector
USB Type A

Input/Output Interface

Digital Input Channels
1 (On MGMT Module)
Digital Inputs
+13 to +30 V for state 1 -30 to +3 V for state 0 Max. input current: 8 mA
Alarm Contact Channels
3 (On MGMT, PWR1, PWR2 Module) Relay output with current carrying capacity of 2 A @ 30 VDC
Buttons
Reset button

Power Parameters

Input Voltage
With PWR-HV-P48–A installed: 110/220 VDC, 110 VAC, 60 HZ, 220 VAC, 50 Hz, PoE: 48 VDC With PWR-LV-P48–A installed: 24/48 VDC, PoE: 48 VDC With PWR-HV-NP installed 110/220 VDC, 110 VAC, 60 HZ, 220 VAC, 50 Hz With PWR-LV-NP installed: 24/48 VDC
Operating Voltage
With PWR-HV-P48–A installed: 88 to 300 VDC, 90 to 264 VAC, 47 to 63 Hz, PoE: 46 to 57 VDC With PWR-LV-P48–A installed: 18 to 72 VDC, PoE: 46 to 57 VDC With PWR-HV-NP installed: 88 to 300 VDC, 90 to 264 VAC, 47 to 63 Hz With PWR-LV-NP installed: 18 to 72 VDC
Input Current
With PWR-HV-P48-A/PWR-HV-NP installed: Max. 0.50 A @ 110 VDC Max. 0.26 A @ 220 VDC Max. 0.96 A @ 110 VAC Max. 0.66 A @ 220 VAC With PWR-LV-P48-A/PWR-LV-NP installed: Max. 2.23 A @ 24 VDC Max. 1.12 A @ 48 VDC EPS (PoE models only): Max. 8.2 A @ 48 VDC Note: Maximum input current ratings are dependent on the installed power and interface modules. The listed values are based on the highest port density model in the MDS-G4000-4XGS Series fully slotted with the highest power consumption modules.
Power Consumption (Max.)
With PWR-HV-P48-A/PWR-HV-NP: Max. 55.1 W @ 110 VDC Max. 55.5 W @ 220 VDC Max. 55.4 W @ 110 VAC Max. 57.5 W @ 220 VAC With PWR-LV-P48-A/PWR-LV-NP: Max. 53.4 W @ 24 VDC Max. 53.6 W @ 48 VDC Note: Maximum power consumption ratings are dependent on the installed power and interface modules. The listed values are based on the highest port density model in the MDS-G4000-4XGS Series fully slotted with the highest power consumption modules.
Overload Current Protection
Supported
Reverse Polarity Protection
Supported
Max. PoE Power Output per Port
IEEE 802.3at: up to 30 W (Up to 36 W in high-power mode) IEEE 802.3bt: up to 90 W (Only supported with LM-7000H-4PoE/-4GPoE modules HW rev 3.0.0 and later.)
Total PoE Power Budget
Max. 360 W (with one power supply) for total PD consumption at 48 VDC input for PoE systems Max. 360 W (with one power supply) for total PD consumption at 53 to 57 VDC input for PoE+/PoE++ systems Max. 720 W (with two power supplies) for total PD consumption at 48 VDC input for PoE systems Max. 720 W (with two power supplies) for total PD consumption at 53 to 57 VDC input for PoE+/PoE++ systems

Physical Characteristics

IP Rating
IP40
Dimensions
239 x 115 x 163.25 mm (9.41 x 4.53 x 6.43 in) 254 x 115 x 163.25 mm (10 x 4.53 x 6.43 in) with dual PWR-HV-P48-A/PWR-LV-P48-A power modules installed
Weight
3,400 g (7.50 lb)
Installation
DIN-rail mounting Wall mounting (with optional kit) Rack mounting (with optional kit)

Environmental Limits

Operating Temperature
-40 to 75°C (-40 to 167°F)
Storage Temperature (package included)
-40 to 85°C (-40 to 185°F)
Ambient Relative Humidity
5 to 95% (non-condensing)

Standards and Certifications

EMC
EN 55032/35 EN 61000-6-2/-6-4
EMI
CISPR 32, FCC Part 15B Class A
EMS
IEC 61000-4-2 ESD: Contact: 8 kV; Air: 15 kV IEC 61000-4-3 RS: 80 MHz to 1 GHz: 20 V/m IEC 61000-4-4 EFT: Power: 4 kV; Signal: 4 kV IEC 61000-4-5 Surge: Power: 4 kV; Signal: 4 kV IEC 61000-4-6 CS: 10 V IEC 61000-4-8 PFMF IEC 61000-4-11 Voltage Dips & Interruptions
Safety
EN IEC 62368-1 IEC 62368-1 UL 62368-1 IEC 60950-1 UL 61010-2-201 EN 61010-2-201
Railway
EN 50121-4
Traffic Control
NEMA TS2
Shock
IEC 60068-2-27
Freefall
IEC 60068-2-31
Vibration
IEC 60068-2-6
Power Substation
IEC 61850-3 IEEE 1613

MTBF

Time
794,302 hrs
Standards
Telcordia Standard SR-332

Warranty

Warranty Period
5 years
Details
See www.moxa.com/warranty

Resources

NameTypeVersionDate
Firmware for MDS-G4000-L3-4XGS Series59.2 MBFirmwarev5.1Mar 30, 2026 Mar 30, 2026 Release notes
MIB file for MDS-G4000-L3-4XGS Series451.6 KBSoftware Packagev5.1Mar 30, 2026 Mar 30, 2026 Release notes
AOI file for MDS-G4000-L3-4XGS Series57.6 KBSoftware Packagev2.0Aug 01, 2025 Aug 01, 2025 Release notes
Firmware for MDS-G4000-L3-4XGS Series58.3 MBFirmwarev5.0Aug 01, 2025 Aug 01, 2025 Release notes
MIB file for MDS-G4000-L3-4XGS Series451.4 KBSoftware Packagev5.0Aug 01, 2025 Aug 01, 2025 Release notes
GSD file for MDS-G4000-L3-4XGS Series72.6 KBSoftware Packagev1.0Aug 01, 2025 Aug 01, 2025 Release notes
EDS file for MDS-G4000-L3-4XGS Series147.9 KBSoftware Packagev2.0Aug 01, 2025 Aug 01, 2025 Release notes
Firmware for MDS-G4000-L3-4XGS Series65.9 MBFirmwarev4.0Sep 26, 2023 Sep 26, 2023 Release notes
Software Package for MDS-G4000-L3-4XGS Series (MIB file)428.2 KBSoftware Packagev4.0Sep 26, 2023 Sep 26, 2023 Release notes
Moxa Managed Switch MX-NOS (v5.x) User Manual21.6 MBManualv1.3Jul 07, 2026
Moxa Managed Switch Next-generation OS (v5.x) Command Line Interface6.8 MBManualv1.1Jul 07, 2026
Datasheet for MDS-G4020-L3-4XGS Series1.8 MBDatasheetv1.5Mar 30, 2026
QIG for MDS-G4000-4XGS/MDS-G4000-L3-4XGS Series4.3 MBQIGv1.5Mar 30, 2026
Moxa Managed Switch Next-generation OS (v4.x) Layer 2 User Manual24.9 MBManualv1.4Mar 20, 2026
Moxa Managed Switch MX-NOS (v5.x) Command Line Interface User Manual6.8 MBManualv1.1Aug 01, 2025
FOSS Statement for MX-NOS v5.x233.7 KBDeclarationv1.1Aug 01, 2025
FOSS Statement for Various MDS, MDS4XGS, RKS, EDS Series Products2.2 MBDeclarationv1.0Aug 14, 2024
Moxa Managed Switch Next-generation OS (v4.x) Layer 2 Command Line Interface User Manual5.4 MBManualv1.2Jun 26, 2024
Declaration of Conformity for MDS-G4012/G4020/G4028-4XGS with LM-7000H Module Series294.7 KBDeclarationv1.0Dec 27, 2023
Moxa Managed Switch Next-generation OS (v4.x) Layer 3 Command Line Interface User Manual1.6 MBManualv1.0Sep 26, 2023
Moxa Managed Switch Next-generation OS (v4.x) Layer 3 User Manual3.1 MBManualv1.0Jun 28, 2023

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