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MDS-G4020 Series

20G-port Layer 2 full Gigabit modular managed Ethernet switches

Features and Benefits

  • Multiple interface type modules for greater versatility
  • 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
  • IEC 62439-3 Clause 4 (PRP) and Clause 5 (HSR) compliant
Certifications
Overview
Specifications
Resources
Models
Contact Sales

Introduction

The MDS-G4020 Series modular switches support up to 20 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-G4000 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, PoE++, and PRP/HSR) and power units (24/48 VDC, 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-G4000 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-G4000 Series can reliably operate in tough and hazardous environments such as power substations, mining sites, ITS, and oil and gas applications. Support for dual power modules provides redundancy for high reliability and availability while LV and HV power module options offer additional flexibility to accommodate the power requirements of different applications.

In addition, the MDS-G4000 Series features an HTML5–based, user-friendly web interface providing a responsive, smooth user experience across different platforms and browsers.

  • Pre-installed Modules

    4 embedded Gigabit 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, PWR-LV-P48 only

    Note: The LM-7000H-2GPHR module can only be used with MDS-G4000-4XGS models HW v2.0.0 or later.

    Note: Only one LM-7000H-2GPHR module can be installed in a single MDS-G4000 unit and must be installed in slot M3.

  • 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

  • Management

    IPv4/IPv6
    Flow control
    Back Pressure Flow Control
    DHCP Server/Client
    ARP
    RARP
    DHCP Relay Agent (Option 82)
    Fiber check
    Port Mirroring (SPAN, RSPAN)
    Linkup Delay
    LLDP
    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

    Link Aggregation
    MRP
    MRP Interconnection
    MSTP
    Multiple Dual Homing
    Multiple Network Coupling
    Network Loop Protection
    Ring Coupling
    RSTP
    STP
    Tracking
    Turbo Chain
    Turbo Ring v2
    PRP/HSR

  • Security

    Access control list
    Broadcast storm protection
    DHCP Snooping
    Dynamic ARP Inspection
    HTTPS/SSL
    IEEE 802.1AE MAC security
    IP Source Guard
    Login and Password Policy
    MAC authentication bypass
    MAC Sticky
    RADIUS
    Rate Limit
    SSH
    Static Port Lock
    TACACS+
    Trust access control

  • 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

    802.1X
    ARP
    DHCP Client
    DHCP Server
    DNS
    HTTP
    HTTPS
    ICMP
    IPv4/IPv6
    NTP Client
    QoS
    RARP
    RMON
    SMTP
    SNMPv1/v2c/v3
    Syslog
    TCP/IP
    Telnet
    TFTP
    UDP
    VLAN Assignment

  • Industrial Protocols

    EtherNet/IP
    Modbus TCP
    PROFINET

  • 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

    1588 PTP Power Profile C37.238-2017
    1588 PTP Power Profile IEC 61850-9-3
    GOOSE Check
    MMS

  • 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 Indicators

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

  • Console Port

    RS-232 (RJ45)

  • USB Connector

    USB Type A

  • 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

  • Input Voltage

    With PWR-HV-P48 installed:
    110/220 VDC, 110 VAC, 60 HZ, 220 VAC, 50 Hz, PoE: 48 VDC

    With PWR-LV-P48 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 installed:
    88 to 300 VDC, 90 to 264 VAC, 47 to 63 Hz, PoE: 46 to 57 VDC

    With PWR-LV-P48 installed:
    18 to 72 VDC (24/48 VDC for hazardous location), PoE: 46 to 57 VDC (48 VDC for
    hazardous location)

    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/PWR-HV-NP installed:
    Max. 0.42 A @ 110 VDC
    Max. 0.21 A @ 220 VDC
    Max. 0.62 A @ 110 VAC
    Max. 0.43 A @ 220 VAC

    With PWR-LV-P48/PWR-LV-NP installed:
    Max. 1.87 A @ 24 VDC
    Max. 0.94 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 Series fully slotted with the highest power consumption modules.

  • Power Consumption (Max.)

    With PWR-HV-P48/PWR-HV-NP installed:
    Max. 45.8 W @ 110 VDC
    Max. 46.2 W @ 220 VDC
    Max. 45.7 W @ 110 VAC
    Max. 47.9 W @ 220 VAC

    With PWR-LV-P48/PWR-LV-NP installed:
    Max. 44.9 W @ 24 VDC
    Max. 44.9 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 Series fully slotted with the highest power consumption modules.

  • 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

  • Overload Current Protection

    Supported

  • Reverse Polarity Protection

    Supported

  • IP Rating

    IP40

  • Dimensions

    176 x 115 x 163.25 mm (6.93 x 4.53 x 6.44 in)

  • Weight

    2500 g (5.51 lb)

  • Installation

    DIN-rail mounting
    Wall mounting (with optional kit)
    Rack mounting (with optional kit)

  • Operating Temperature

    Standard Temperature: -10 to 60°C (14 to 140°F)
    Wide 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)

  • Safety

    EN IEC 62368-1
    IEC 60950-1
    IEC 62368-1
    UL 62368-1

  • 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

  • Railway

    EN 50121-4

  • Traffic Control

    NEMA TS2

  • Shock

    IEC 60068-2-27

  • Freefall

    IEC 60068-2-31

  • Vibration

    IEC 60068-2-6

  • Hazardous Locations

    ATEX
    Class I Division 2

  • Power Substation

    IEEE 1613
    IEC 61850-3

  • Time

    1,007,790 hrs

  • Standards

    Telcordia Standard SR-332

Software, Firmware, and Drivers

FILTER

All Firmware Software Package
Name Type Checksum Version Operating System Release Date
Firmware for MDS-G4000 Series Download
58.2 MB 		Firmware
SHA-512
v5.1
Mar 30, 2026 Mar 30, 2026 Release notes
MIB file for MDS-G4000 Series Download
428.6 KB 		Software Package
SHA-512
v5.1
Mar 30, 2026 Mar 30, 2026 Release notes
Firmware for MDS-G4000 Series Download
57.5 MB 		Firmware
SHA-512
v5.0
Aug 01, 2025 Aug 01, 2025 Release notes
GSD file for MDS-G4000 Series Download
73.9 KB 		Software Package
SHA-512
v1.0
Aug 01, 2025 Aug 01, 2025 Release notes
EDS file for MDS-G4000 Series Download
147.9 KB 		Software Package
SHA-512
v2.0
Aug 01, 2025 Aug 01, 2025 Release notes
MIB file for MDS-G4000 Series Download
428.4 KB 		Software Package
SHA-512
v5.0
Aug 01, 2025 Aug 01, 2025 Release notes
AOI file for MDS-G4000 Series Download
57.6 KB 		Software Package
SHA-512
v2.0
Aug 01, 2025 Aug 01, 2025 Release notes
Software Package for MDS-G4000 Series (MIB file) Download
376.1 KB 		Software Package
SHA-512
v4.0
Sep 26, 2023 Sep 26, 2023 Release notes
Firmware for MDS-G4000 Series Download
65.8 MB 		Firmware
SHA-512
v4.0
Sep 26, 2023 Sep 26, 2023 Release notes

Support Documents

FILTER

All 2D CAD Datasheet Declaration Manual QIG
Name Type Version Release Date
QIG for MDS-G4000/MDS-G4000-L3 Series Download
1.6 MB 		QIG v1.9 Mar 30, 2026 Mar 30, 2026
Datasheet for MDS-G4020 Series Download
1.3 MB 		Datasheet v1.8 Mar 30, 2026 Mar 30, 2026
Moxa Managed Switch MX-NOS (v5.x) User Manual Download
21.4 MB 		Manual v1.2 Mar 30, 2026 Mar 30, 2026
Declaration of Conformity for MDS-G4012/G4020/G4028 Series with LM-7000H Module Series Download
317.5 KB 		Declaration v1.1 Feb 26, 2026 Feb 26, 2026
FOSS Statement for MX-NOS v5.x Download
233.7 KB 		Declaration v1.1 Aug 01, 2025 Aug 01, 2025
Moxa Managed Switch MX-NOS (v5.x) Command Line Interface User Manual Download
6.8 MB 		Manual v1.1 Aug 01, 2025 Aug 01, 2025
FOSS Statement for Various MDS, MDS4XGS, RKS, EDS Series Products Download
2.2 MB 		Declaration v1.0 Aug 14, 2024 Aug 14, 2024
Moxa Managed Switch Next-generation OS (v4.x) Layer 2 Command Line Interface User Manual Download
5.4 MB 		Manual v1.2 Jun 26, 2024 Jun 26, 2024
Moxa Managed Switch Next-generation OS (v4.x) Layer 2 User Manual Download
18.7 MB 		Manual v1.3 Jun 26, 2024 Jun 26, 2024
2D CAD for MDS-G4020 Series Download
1.8 MB 		2D CAD Mar 31, 2020 Mar 31, 2020

Related Content

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All Application Note Article Technology Guide Video

Available Models (2)

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moxa-mds-g4020-image.jpg | MoxaMDS-G4020
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moxa-mds-g4020-t-image.jpg | MoxaMDS-G4020-T
Layer22
Total No. of Ports2020
100/1000Base SFP SlotsUp to 16Up to 16
10/100/
1000BaseT(X)
Ports RJ45 Connector		Up to 20Up to 20
PoE 10/100/ 1000BaseT(X)
Ports RJ45 Connector		Up to 16Up to 16
10/100BaseT(X)
Ports RJ45 Connector		Up to 16Up to 16
PoE 10/ 100BaseT(X)
Ports RJ45 Connector		Up to 16Up to 16
Operating Temp.-10 to 60°C-40 to 75°C
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