IEC61850-3 Certified Rack-Mount High-Availability
Managed Modular Gigabit Switch - PTP Boundary Clock

  • Supports HSR (IEC 62439-3 Clause 5) and PRP (IEC 62439-3 Clause 4)
  • IEC 61850-3 and IEEE 1613 DNV.GL certification (pending)
  • Integrated IEEE 1588v2 hardware-based BC and TC (-BC/SB version)
  • Maximum 128Gbps switching capacity, 95.24Mpps throughput
  • Rugged industrial design for harsh environments between -40~85°C
  • Flexible modular configuration; 3 Module-dedicated slots
  • Up to 24 Gigabit ports, and 4x10 Gigabit SFP Uplink slots, 1PPS BNC
  • ITU-T G.8032 ERPS Ring, RSTP, or MRP (Manager/ Client) redundancy
  • Advanced management features such as QoS and VLAN

Flexibility: ATOP’s high-density RHG9528 Rack-mounted managed switch provides the flexibility needed for your application demands.
You can choose from among six different Core versions: based on power supply, uplink port configurations and embedded Hardware-Assisted Boundary Clock feature. And you can choose from six different 4- or 8-Port modules to customize your device in a very simple way.

Designed for Substations: RHG9528 supports up to 24 Gigabit ports in any 8-port multiple configuration. Specifically designed for IEC61850 substation backbone use, it is fully certified to meet all IEC61850-3 hardware requirements – such as EMC Level 3, 4 and 5 requirements, Wide temperature range and High availability.

Award-winning Performance: RHG9528’s IEEE1588v2 Hardware-PTP version received recognition for nanosecond-level accuracy. This makes RHG9528 one of the most reliable GMC backups. And being embedded with Synchronous Ethernet and with full support for PTP profiles.

High-availability, versatility and power: When equipped with High-Availability HSR/PRP modules, RHG9528 complies with the most stringent redundancy requirements, ensuring no packet loss and guaranteeing GOOSE packets arrive at their respective destinations. RHG9528‘s high performance provides a network redundant self-recovery mechanism of under 20ms on full load. This enables you to build a reliable network through almost any redundant ring topology. RHG9528 supports ITU-T G.8032 ERPS Ring, IEEE802.1D-2004 RSTP, STP, MSTP, MRP (Manager/Client), iA-Ring, iA-Chain and many other compatible ring protocols for network redundancy. With a Multifunctional web dashboard, its offers intelligent features such as Quality of service (QoS), IGMP, port mirroring, and security. It is available in two power input variants: one for low-DC voltage (redundant 24~120VDC input) and one for the more popular HighVoltage applications in the distribution grid (redundant 110~240VAC, 24~120VDC or 120~380VDC input). Additional 4 x 10 Gigabit uplink SFP slots allow RHG9528 to be the backbone of the substation.

Click here to learn more about Application & Configuration example.

Environmental LimitsValue
Operating Temperature-40°C~75°C (-40°F~158°F)
Storage Temperature-40°C~85°C (-40°F~185°F)
Ambient Relative Humidity5%~95%, 55°C (Non-condensing)
Physical Characteristics 
HousingIP30 SPCC metal housing
Dimension (W x H x D)440 x 44 x 340 mm (not including screws and rack-mount kit)
Weight5Kg (not including module but module cover only)
Installation1U Rack-mount, Rack-mount kit included
Rated Supply VoltageDC version: redundant 24-120 VDC
AC version: redundant 100-240 VAC
HV version: redundant 120-380 VDC
Input VoltageDC version: redundant 19-132 VDC
AC version: redundant 90-264 VAC
HV version: redundant 120-380 VDC
Input Current (Max)2.66A Max, 64W Max (For DC version models)
0.7A Max, 50/60Hz (For AC version models)
0.52A Max, 62W Max (For HVDC version models)
Power< 70W (85°C)
Reverse Polarity ProtectionYes
Relay Output1 Relay Output (24V/1A)
ConnectorsAC: Barrier Terminal Block 4pin 9.52mm
DC: Barrier Terminal Block 3Pin 13mm
StandardsIEEE 802.3 for 10BASE-T
IEEE 802.3u for 100BASE-T(X)
IEEE 802.3u for 100BASE-FX
IEEE 802.3ab for 1000BASE-T(X)
IEEE 802.3z for 1000BASE-X
IEEE 802.3ae For 10 Gigabit Ethernet Fiber
IEEE 802.3x for Flow Control, backpressure control
IEEE 802.1D-2004 for Rapid Spanning Tree Protocol
IEEE 802.1s for Multiple Spanning Tree Protocol
IEEE 802.1Q for VLAN Tagging
IEEE 802.1p for Class of Service
IEEE 8021X for Authentication
IEEE 802.1AB Link Layer Discovery Protocol (LLDP)
IEEE 802.3ad for Port Trunk with LACP
IEC-62439-3 Clause 4 PRP (Parallel Redundancy Protocol)
IEEE1588v2 PTP (Hardware-based) - (-SB version only)
ITU-T G.8261 Synchronous Ethernet
ProtocolsIPv4, IPv6, IGMPv1/v2/v3, GMRP, GVRP, SNMPv1/v2c/v3, SNMP Inform, ICMP,
Telnet, SSH, DHCP Server/Relay/Client, DHCP Option 66/67/82, BootP, TFTP, NTP
Server/Client, SNTP, SMTP, RMON, HTTP, HTTPS, Telnet, Syslog, MRP (Manager/
Client), ERPS, LLDP, IEEE 1588 PTP V2(Hw-based), 802.1x, RADIUS, TACACS+,
SyncE, HSR, PRP, Voice VLAN, sFlow
RedundancyIEC62439-3 Clause 5 High-Avail-Seamless-Redundancy(HSR) only RHG9X28-
IEC62439-3 Clause 4 Parallel-Redundancy-Protocol (PRP) - only with RHG9X28-
ITU-T G.8032 ERPS, STP, RSTP, MSTP, MRP (Manager/Client), Compatible
Ring/Chain, U-Ring
Automation ProfilesModbus TCP
Time SynchronizationNetwork TimeNTP Server/Client, SNTP
Time Protocol
Std Version:
IEEE1588v1 BC (SW)
IEEE1588v2 BC (SW)
IEEE1588v2 TC (HW)-ns accuracy

PTP (-SB) Version:
IEEE1588v2 BC (HW)-ns accuracy
IEEE1588v2 TC (HW)-ns accuracy
Synchronous Ethernet
Boundary Clock/
SyncE (-SB):
<30 ns/s (IEEE61850-9-3 compliant)
PTP Mode
(all versions)
Layer-2: Multicast, E2E/P2P, two-steps
Layer-3 (IPv4):Multicast,Unicast,Unicast Neg. (E2E/P2P)
(-SB version)
C37.238 -2017 Power Profile
IEC/ IEEE61850-9-3 Power Profile(2016)
RHG9528-410GSFP-BC/SB-XX support hardware-assisted
BC/TC also on 4x1G or 4x10G SFP uplink slots.
1PPS square pulse issued from a 1PPS output BNC(F)
Switch PropertiesValue
Priority Queues8
VLAN Table512
MAC-Based VLAN512
VLAN ID RangeVID 1 to 4094
Trunk Group8
Static IGMP Groups128
Dynamic IGMP Groups256
MAC Table Size16k
Packet Buffer Size1.5 MB
Jumbo Frame9216 Byte
Switching Fabric Capacity128 Gbps
Maximum throughput95.24 Mpps
ShockMIL-STD-810G Method 516.7 (2014)
DropMIL-STD-810F Method 516.7 (2014)
VibrationMIL-STD-810F Method 514.7 C-1 & C-III Category 4(2014)
Warranty5 Years
MTBF20 Years
IEC 61000-4-2ESDContact Discharge±8kV4
IEC 61000-4-2ESDAir Discharge±15kV4
IEC 61000-4-3RSEnclosure Port10(V/m), 80-1000MHz,
80% AM, 1~3GHz
IEC 61000-4-4EFTAC Power Port±4.0kV @5.0kHz4
IEC 61000-4-4EFTDC Power Port±4.0kV @5.0kHz4
IEC 61000-4-4EFTSignal Port±4.0kV @5.0kHz4
IEC 61000-4-5SurgeAC Power Port (L-2-L)±2.0kV4
IEC 61000-4-5SurgeAC Power Port (L-2-E)±4.0kV4
IEC 61000-4-5SurgeDC Power Port (L-2-L)±1.0kV3
IEC 61000-4-5SurgeDC Power Port (L-2-E)±2.0kV3
IEC 61000-4-5SurgeSignal Port (L-2-E)±4.0KV4
IEC 61000-4-6CSAC Power Port10V rms 0.15-80MHz, 80% AM3
IEC 61000-4-6CSDC Power Port10V rms 0.15-80MHz, 80% AM3
IEC 61000-4-6CSSignal Port 10V rms 0.15-80MHz, 80% AM3
IEC 61000-4-8PFMF(Enclosure)100A/m continuous, 1000A/m (1s)5
IEC 61000-4-11DIPAC Power PortDrop 70% 3 times/s (1period)-
IEC 61000-4-11DIPAC Power PortDrop 40% 3 times/1ms (50 period)-
IEC 61000-4-11DIPAC Power PortDrop 100% 3 times/50m(5-50per.)-
IEC 61000-4-16Main
DC Input / Output30V continuous, / 300V 1S4
Signal Port
IEC 61000-4-17RippleDC Input / Output10% of unit (10% Level3)3
IEC 61000-4-18Damped
AC Power PortLine-to-Line ±1.0KV
Line-to-Earth ±2.5KV
DC Power PortLine-to-Line ±1.0KV
Line-to-Earth ±2.5KV
Signal PortLine-to-Earth ±2.5KV
IEC 61000-4-29DC Input PortDips and Interruptions30% Reduction: 0.1 sec
60% Reduction: 0.1 sec
100% Reduction: 0.05 sec
SafetyUL/EN/IEC(CB) 62368-1
EMCFCC Part 15, Subpart B, Class A, EN 55032, EN 55035, EN 61000-6-4:2007+A1 2011,
EN 61000-3-2, EN 61000-3-3, EN 61000-6-2:2005
Power AutomationIEC61850-3, IEEE 1613
RoHS 2Yes

Switch Core

Dimensions & Layout

AC POWER CORD (US)50892531GRHG9X28 US AC Power CORD; 183cm
AC POWER CORD (EU)50891751GRHG9X28 EU AC Power CORD; 180cm
SDR-240-4850502401480001GDIN RAIL POWER SUPPLY / T;AC 100~240V to 48V~55V DC 5A;240W
SDR-480-4850504801480001GDIN RAIL POWER SUPPLY / T;AC 100~240V to 48V~55V DC 10A;480W
AXFD-1314-0523522AXFD1314001GSFP Transceiver;155Mbps, Multi-mode;1310nm;2km;-40~85, DDMI
AXFD-1314-0553522AXFD1314011GSFP Transceiver;155Mbps, Single-mode;1310nm;30km;-40~85, DDMI
AXGD-5854-0513522AXGD5854001G SFP Transceiver, 1250Mbps, 850nm, Multi-mode, 550m, 3.3V, -40~85°C, DDMI
AXGD-1354-0523522AXGD1354001GSFP Transceiver, 1250Mbps, 1310nm, Multi-mode, 2km, 3.3V, -40~85°C, DDMI
AXGD-1354-0533522AXGD1354011GSFP Transceiver, 1250Mbps, 1310nm, Single-mode, 10km, 3.3V, -40~85°C, DDMI
AXGD-3354-0593522AXGD3354001GSFP Transceiver, 1250Mbps, 1310nm, Single-mode, 40km, 3.3V, -40~85°C, DDMI
AXXE-5886-05B3522AXXE5886001GSFP Transceiver,10Gbps Multi;850nm;300m;-40~85°C
RHG9X28-M11P1RHG9X28M101G8P*1000TX RJ45 Module
RHG9X28-M21P1RHG9X28M201G8P*1000FX SFP Module
RHG9X28-M31P1RHG9X28M301G4P;RJ45 Module and IRIG-B(TB)
RHG9X28-M41P1RHG9X28M401G4P;SFP Module and IRIG-B(TB)
RHG9X28-M51P1RHG9X28M501G4P;RJ45 Module and HSR/PRP
RHG9X28-M61P1RHG9X28M601G4P;SFP Module and HSR/PRP
RHG9528-410GSFP-SB-DC1P1RHG9528000GG4*10G;SFP;2DC;Support HW-Boundary Clock/ SyncE
RHG9528-410GSFP-SB-AC1P1RHG9528000KG4*10G;SFP;2AC;Support HW-Boundary Clock/ SyncE
RHG9528-410GSFP-SB-HV1P1RHG9528000IG4*10G;SFP;2HV;Support HW-Boundary Clock/ SyncE


Version Name Time Size Download
v5.60 Management Utility for Windows 2021-06-01 23.65 MB


Version Name Time Size Download
v7.70 RHG9528 Firmware 2022-10-23 17.44 MB
v7.38 RHG9528 Firmware 2021-12-06 15.95 MB
v7.21 RHG9528 Firmware 2021-06-01 14.41 MB


Version Name Time Size Download
v2.3 Datasheet EN 2024-03-11 1001.42 KB
v1.9 Datasheet EN 2022-11-21 1.04 MB
v1.6 Datasheet EN 2021-08-25 1.49 MB
v1.5 Datasheet EN 2021-07-05 1.64 MB
v2.2 Datasheet EN 2024-02-21 1001.29 KB
v2.1 Datasheet EN 2023-10-03 984.81 KB


Version Name Time Size Download
v2.0 RHG9528 User Manual 2022-10-21 7.42 MB
v1.7 RHG9528 User Manual 2021-06-01 7.31 MB

Hardware Installation Guide

Version Name Time Size Download
v1.1 RHG9528 Hardware Installation guide 2021-06-01 6.2 MB


Version Name Time Size Download
RHG9528 MIB 2022-12-05 20.71 KB

Test reports

Version Name Time Size Download
RHG9528 Declarations of Conformity 2023-03-16 424.8 KB
v1.0 RHG9528 Authorization to apply UL mark UL/CUL 62368-1 2021-07-19 60.13 KB
v1.0 RHG9528 Test Certificate CB IEC62368-1 2021-07-19 4.89 MB
v1.0 RHG9528 Test Report CB IEC62368-1 2021-07-19 4.89 MB
v1.0 RHG9528 Certification CE EMC EN61000-6-2_EN61000-6-4 2021-06-01 9.71 MB
v1.0 RHG9528 Certification CE EMC55032_EN55035 2021-06-01 9.69 MB
v1.0 RHG9528 Certification FCC PART15B 2021-06-01 7.32 MB
v1.0 RHG9528 Certification IEC60255-5 2021-06-01 2.69 MB
v1.0 RHG9528 Certification IEC61850-3 EMC 2021-06-01 11.03 MB
v1.0 RHG9528 Certification IEEE1613 2021-06-01 4.96 MB
v1.0 RHG9528 Test Report IEC61850-3 2021-06-01 28.44 MB

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