PT-G503 Series

IEC 61850-3/62439-3 3-port full Gigabit managed redundancy boxes

moxa-pt-g503-series-image-1-(1).jpg | Moxa

Features and Benefits

  • IEC 61850-3, IEEE 1613 (power substations) compliant
  • IEC 62439-3 Clause 4 (PRP) and Clause 5 (HSR) compliant
  • PRP/HSR Coupling and QuadBox functions supported
  • Ethernet console reserved for local access
  • Built-in MMS server based on IEC 61850-90-4 switch data modeling for power SCADA
  • Hardware-based IEEE 1588v2 PTP supported
  • Design ready for NERC CIP compliant system development
  • Isolated redundant power inputs with universal 24 VDC, 48 VDC, or 110/220 VDC/VAC power supply range
  • -40 to 85°C operating temperature range


  • moxa-iec61850-3-ieee1613-black-certification-logo-image.png | Moxa
  • moxa-en50121-4-certification-logo-image.png | Moxa
  • moxa-ce-certification-logo-image.png | Moxa
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The PT-G503-PHR-PTP Series redundancy boxes (RedBoxes) are compliant with the latest standardized redundancy protocols for industrial automation networks, IEC 62439-3 Clause 4 (Parallel Redundancy Protocol, PRP) and IEC 62439-3 Clause 5 (High-availability Seamless Redundancy, HSR). PRP/HSR ensures the highest system availability and data integrity for mission-critical applications in electrical substation and/or process automation systems that require zero recovery time redundancy. The redundant protocols Coupling and QuadBox are also supported. With Coupling and QuadBox, HSR rings can be connected to make the redundant network more versatile. The PT-G503-PHR-PTP Series comes with three 10/100/1000BaseT(X) and 100/1000BaseSFP slot combo ports.

One slot (INTERLINK port) is for an internal link for connecting with a SAN (Singly Attached Node). The other two ports (LAN A and LAN B ports) are for PRP/HSR redundant protocol communications. With this full Gigabit Ethernet port design, the PT-G503-PHR-PTP Series provides high performance for PRP/HSR systems.

The PT-G503-PHR-PTP Series also provides IEEE 1588v2 PTP in end-to-end one-step transparent clock mode for timing-critical applications and isolated redundant power inputs with 24/48 VDC or 110/220 VDC/VAC power supply ranges to increase the reliability of the power supply.

Additional Features and Benefits

  • PRP (Parallel Redundancy Protocol): Transmit or receive two independent active paths to/from different LANs simultaneously on a zero recovery time network

  • HSR (High-availability Seamless Redundancy): Every frame is duplicated and then transmitted in both directions of the HSR ring to deliver zero switchover time

  • PRP/HSR coupling: Supports coupling from an HSR ring node to redundant PRP LANs (Up to 7 PRP LANs)

  • QuadBox function: Supports peer coupling of rings via interconnecting two INTERLINK ports on two separate RedBoxes

  • Fiber Check™ provides monitoring and diagnosis functionality on SFP fiber ports

  • Hardware-based IEEE 1588v2 PTP (Precision Time Protocol) end-to-end one-step transparent clock for precise time synchronization of networks

  • Automatic warning by exception through email and relay output

  • Configurable via web browser, CLI, Windows utility, and ABC-02 automatic backup configurator

  • Combo Ports (10/100/1000BaseT(X) or 100/1000BaseSFP+)


  • Console Port

    Ethernet console (10/100/1000Mbps RJ45)

  • Standards

    IEEE 802.3 for 10BaseT
    IEEE 802.3ab for 1000BaseT(X)
    IEEE 802.3u for 100BaseT(X) and 100BaseFX
    IEEE 802.3z for 1000BaseSX/LX/LHX/ZX

  • Filter

    Static Multicast

  • Industrial Protocols

    Modbus TCP

  • Management

    Back Pressure Flow Control, BOOTP, DHCP Client, Fiber check, Flow control, HTTP, IPv4/IPv6, LLDP, Port Mirror, RARP, RMON, SMTP, SNMP Inform, SNMPv1/v2c/v3, Syslog, Telnet

  • Power Substation


  • Redundancy Protocols

    HSR, PRP, RSTP grouping

  • Security

    HTTPS/SSL, TACACS+, RADIUS, SSH, Trust access control

  • Time Management

    NTP Server/Client, SNTP, IEEE 1588v2 PTP (hardware-based)

  • MIB

    IEC 62439-3 MIB

  • Storage Port

    USB Type A

  • Console Port

    USB-serial console (Type B connector)

  • Alarm Contact Channels

    Resistive load: 1 A @ 24 VDC

  • Digital Inputs

    +13 to +30 V for state 1
    -30 to +3 V for state 0
    Max. input current: 8 mA

  • Input Voltage

    Redundant dual inputs
    110/220 VAC/VDC (85 to 264 VAC, 88 to 300 VDC)

    Redundant dual inputs
    24/48 VDC (18 to 72 VDC)

  • Overload Current Protection


  • Reverse Polarity Protection


  • Input Current

    PT-G503-PHR-PTP-HV: 0.260/0.170 A @ 110/220 VAC
    PT-G503-PHR-PTP-HV: 0.150/0.080 A @ 110/220 VDC
    PT-G503-PHR-PTP-WV: 0.660/0.360 A @ 24/48 VDC

  • Power Connector

    1 removable 5-contact terminal block(s)

  • Housing


  • IP Rating


  • Dimensions (without ears)

    80 x 160 x 110 mm (3.15 x 6.30 x 4.33 in)

  • Weight

    1210 g (2.69 lb)

  • Installation

    DIN-rail mounting

  • Operating Temperature

    -40 to 85°C (-40 to 185°F)

  • Storage Temperature (package included)

    -40 to 85°C (-40 to 185°F)

  • Ambient Relative Humidity

    5 to 95% (non-condensing)

  • Safety

    UL 508

  • EMI

    EN 55032 Class A, 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: 35 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 DIPs

  • Power Substation

    IEC 61850-3, IEEE 1613

  • Railway

    EN 50121-4

  • Time

    PT-G503-PHR-PTP-HV: 566,844 hrs
    PT-G503-PHR-PTP-WV: 440,857 hrs

  • Standards

    Telcordia (Bellcore) Standard TR/SR

Software, Firmware, and Drivers


Name Type Version Operating System Release Date
Firmware for PT-G503 Series
6.2 MB
Firmware v5.0
2019-12-09 Dec 09, 2019 Release notes
MXview Trial Version
331.7 MB
Software Package v3.0
  • Windows 10
  • Windows 7
  • Windows Server 2012 R2
  • Windows Server 2016
2019-03-21 Mar 21, 2019 Release notes
Software Package for PT-G503 Series (MMS ICD file)
29.5 KB
Software Package v1.0
2019-01-28 Jan 28, 2019 Release notes
SNMP MIB file for PT-G503 Series
78.5 KB
Software Package v4.3
2017-10-17 Oct 17, 2017 Release notes
Moxa USB Console Windows Driver
1.2 MB
Driver v1.7.1
  • Windows
  • Windows 2000
  • Windows 7
  • Windows 8
  • Windows 98 SE
  • Windows ME
  • Windows Server 2003
  • Windows Server 2008
  • Windows Vista
  • Windows XP
2013-12-10 Dec 10, 2013 Release notes

Support Documents

Name Type Version Release Date
QIG for PT-G503 Series
1.2 MB
QIG v2.1 2020-07-01 Jul 01, 2020
Tech Note: Recommended Procedure for STP Cable Grounding on Moxa's Industrial Ethernet Switches
558.3 KB
Tech Note v1.0 2019-02-12 Feb 12, 2019
Datasheet for PT-G503 Series
929.9 KB
Datasheet v1.0 2018-11-12 Nov 12, 2018
2D CAD for PT-G503-PTP
73.7 KB
2D CAD 2018-01-19 Jan 19, 2018
Moxa PRP/HSR Redundancy Box User's Manual
1.3 MB
Manual v1.0 2015-02-03 Feb 03, 2015

Available Models (2)

Show Images
moxa-pt-g503-phr-ptp-hv-image.jpg | MoxaPT-G503-PHR-PTP-HVmoxa-pt-g503-phr-ptp-wv-image.jpg | MoxaPT-G503-PHR-PTP-WV
Max. No. of Ports33
Max. No. of Gigabit Ports33
Combo Ports
10/100/1000BaseT(X) or 100/1000BaseSFP
Input Voltage110/220 VDC/VAC24/48 VDC
Operating Temp.-45 to 85°C-45 to 85°C
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PT-G503 Series


moxa-pt-g503-phr-ptp-wv-image.jpg | Moxa

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PT-G503 Series


moxa-pt-g503-phr-ptp-hv-image.jpg | Moxa

Buy online from our distributors