RKS-G4028-PL Series

12 10GbE, 16 GbE-port (802.3bt PoE optional) Layer 2 modular managed Ethernet switches

moxa-rks-g4028-pl-series-image-1-(1).jpg | Moxa

moxa-rks-g4028-pl-series-image-2-(1).jpg | Moxa

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moxa-rks-g4028-pl-series-image-5-(1).jpg | Moxa

Features and Benefits

Scalable design supporting up to 28 ports, from Fast Ethernet to 10GbE industrial networks
Modular interfaces with LAN modules and power modules for flexible expansion
IEEE 802.3bt PoE with up to 90 W per port and 720 W total budget for high-power devices
High EMC immunity compliant with IEC 61850-3 and IEEE 1613
Hardware-based IEEE 1588 PTP for high-precision time synchronization
Intelligent chassis monitoring with built-in temperature detection
Turbo Ring and Turbo Chain (recovery time < 20 ms @ 250 switches) If the port link speed is 1 Gigabit or higher, the recovery time is < 50 ms. , and STP/RSTP/MSTP for network redundancy
Supports MXView One series for easy, visualized industrial network management
GOOSE Check for easy troubleshooting
Built-in MMS server based on IEC 61850-90-4 switch data modeling for power SCADA
IEC 62443-4-2 Security Level 2 certified
-40 to 75°C operating temperature range

Certifications

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Introduction

The RKS-G4028–PL Series is purpose-built to deliver exceptional reliability and performance for mission-critical industrial and business applications, including power substation automation, railway operations, and intelligent transportation systems.

With its high-density 10GbE backbone (up to 12 fixed 10G SFP+ ports), modular LAN expansion (up to 16 additional Gigabit ports), and dual isolated redundant power supply options (12/24/48 VDC, 110/220 VAC/VDC, or 48V EPS), the RKS-G4028-PL Series ensures robust communication while reducing wiring and maintenance costs.

Even better, the dual-sided power installation design (front or rear) maximizes installation convenience for diverse cabinet layouts.

Additional Features and Benefits

IEEE 1588v2 PTP (Precision Time Protocol) for network time synchronization
Command line interface for quickly configuring major managed functions
IGMP snooping and GMRP for filtering multicast traffic
Port-based VLAN, IEEE 802.1Q VLAN, and GVRP to ease network planning
QoS (IEEE 802.1p/1Q and TOS/DiffServ) to increase determinism
IEEE 802.3ad, LACP for optimum bandwidth utilization
Line-swap fast recovery
TACACS+, IEEE 802.1X, SNMPv3, HTTPS, and SSH to enhance network security

SNMPv1/v2c/v3 for different levels of network management
RMON for proactive and efficient network monitoring
Bandwidth management prevents unpredictable network status with “Lock port” to restrict access to authorized MAC addresses
Port mirroring for online debugging
Automatic warning by exception through email and relay output
Automatic recovery of connected device’s IP addresses
Configurable by web browser, Telnet/serial console, CLI, Windows utility, and ABC-02 or ABC-03 automatic backup configurator
Out-of-band management (OOBM) port to ensure the availability of network management when in-band services are inaccessible

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1000/2500/10000BaseSFP Ports

RKS-G4028-PL models: 12
Out-of-band Management (OOBM)

1 x 8-pin RJ45 1GbE Ethernet port (MGMT)
Expansion Module Slots

There are 2 module slots on the switch. Users can select different types of modules to insert into the switch. The modules that can be selected include 8-port modules with 10/100/1000BaseT(X), 10/100/1000BaseT(X) PoE, and 100/1000BaseSFP interfaces.

Refer to Expansion Modules in the Accessories section for a full list of supported interface modules.

8-port module slots: 2 (Up to 16 total ports)

Module Options:
8-port 10/100/1000BaseT(X)
8-port 10/100/1000BaseT(X) PoE (PoE models only)
8-port 100/1000BaseSFP
Standards

IEEE 802.1D-2004 for Spanning Tree Protocol
IEEE 802.1p for Class of Service
IEEE 802.1Q for VLAN Tagging
IEEE 802.1s for Multiple Spanning Tree Protocol
IEEE 802.1w for Rapid Spanning Tree Protocol
IEEE 802.1X for authentication
IEEE 802.3 for 10BaseT
IEEE 802.3ab for 1000BaseT(X)
IEEE 802.3ad for Port Trunk with LACP
IEEE 802.3ae for 10 Gigabit Ethernet
IEEE 802.3bz for 2.5GBaseX
IEEE 802.3u for 100BaseT(X) and 100BaseFX
IEEE 802.3x for flow control
IEEE 802.3z for 1000BaseSX/LX/LHX/ZX
Note

All Ethernet ports on the RKS-G4028-PL series operate in full-duplex mode exclusively. Half-duplex transmission is not supported.

Management

ARP
Back Pressure Flow Control
DHCP Relay Agent (Option 82)
DHCP Server/Client
Fiber check
Flow control
HTTP
HTTPS
IPv4
Linkup Delay
LLDP
Port Mirroring (SPAN, RSPAN)
Private MIB
RARP
RMON
SFTP
SMTP
SNMP Inform
SNMP Trap
SNMPv1/v2c/v3
Syslog
Telnet
TFTP
Filter

GMRP
GVRP
GARP
802.1Q
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
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
RADIUS
Rate Limit
Secure boot
SSH
Static port lock
Sticky MAC
TACACS+
Trust access control
Time Management

IEEE 1588v2 PTP (hardware-based)
NTP Authentication
NTP Server/Client
SNTP
Supported power profiles: IEEE 1588 Default 2008, IEC 61850-9-3-2016, IEEE C37.238-2017
Protocols

802.1X
ARP
DNS
HTTP
HTTPS
ICMP
IPv4
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

IEEE8021-PAE-MIB
IEEE8021-SPANNING-TREE-MIB
IEEE8023-LAG-MIB
LLDP-EXT-DOT1-MIB
LLDP-EXT-DOT3-MIB
P-BRIDGE MIB
Q-BRIDGE-MIB
RMON MIB Groups 1, 2, 3, 9
SNMPv2-MIB
Power Substation

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

GOOSE Check
MMS

IGMP Groups

2048
Jumbo Frame Size

9.216 KB
MAC Table Size

32 K
Max. No. of VLANs

512
Packet Buffer Size

8 MB
Priority Queues

8
VLAN ID Range

VID 1 to 4094

Storage Port

USB Type A

Storage Port

microSD card

LED Indicators

PWR1, PWR2, STATE, FAULT, MSTR/HEAD, CPLR/TAIL, SYNC, EPS1, EPS2

Console Port

RS-232 (RJ45)

Alarm Contact Channels

1 relay output with current carrying capacity of 2 A @ 30 VDC, 0.5A @ 125VAC
Buttons

Reset button

Total PoE Power Budget

720 W with dual power module installation
Max. PoE Power Output per Port

IEEE 802.3af: 15.4 W
IEEE 802.3at: 30 W
IEEE 802.3bt: 90 W
Input Voltage

Isolated Power Module
PWR-310-HV: 110/220 VDC, 110/220 VAC
PWR-310-HVA: 110/220 VAC
PWR-310-LV: 12/24/48 VDC

Isolated Power Module with PoE EPS
PWR-310-HV-P: 110/220 VAC, 110/220 VDC, EPS Input: 48–57 VDC
PWR-310-LV-P: 12/24/48 VDC, EPS Input: 48–57 VDC
(For PoE+ applications, a minimum of 53 VDC is recommended)
Operating Voltage

PWR-310-LV / PWR-310-LV-P models: 10.8 to 72 VDC
PWR-310-HV: 88 to 300 VDC, 85 to 264 VAC
PWR-310-HVA: 85 to 264 VAC
PWR-310-HV-P models: 88 to 300 VDC, 85 to 264 VAC
PoE models: 46 to 57 VDC (for the PoE system)
Overload Current Protection

Supported
Reverse Polarity Protection

Supported
Input Current

PWR-310-LV / PWR-310-LV-P models:
Max. 8 A @ 12 VDC
Max. 3.08 A @ 24 VDC
Max. 1.52 A @ 48 VDC

PWR-310-HV/PWR-310-HV-P models:
Max. 0.67 A @ 110 VDC
Max. 0.33 A @ 220 VDC
Max. 0.79 A @ 110 VAC
Max. 0.35 A @ 220 VAC

PWR-310-HVA models:
Max. 0.79 A @ 110 VAC
Max. 0.35 A @ 220 VAC

EPS (PoE models only):
Max. 12 A @ 48 to 57 VDC
Power Consumption (Max.)

RKS-G4028-PL with PWR-310 LV and LV-P Modules:
Max. 96.06 W @ 12 VDC
Max. 81.4 W @ 24 VDC
Max. 80.3 W @ 48 VDC

RKS-G4028-PL with PWR-310 HV and HV-P Modules:
Max. 80.96 W @ 110 VDC
Max. 80.3 W @ 220 VDC
Max. 79.86 W @ 110 VAC
Max. 78.76 W @ 220 VAC

RKS-G4028-PL with PWR-310 HVA Modules:
Max. 79.86 W @ 110 VAC
Max. 78.76 W @ 220 VAC

IP Rating

IP40 with all ports/interfaces populated
Dimensions

440 x 44 x 387 mm (17.32 x 1.72 x 15.24 in)
Weight

RKS-G4028-PL-PoE-12XGS-T: 5410 g (11.93 lb)
RKS-G4028-PL-12XGS-T: 5450 g (12.02 lb)

RM-G4000-PL LAN Port Module:
RM-G4000-PL-8GSFP: 505 g (1.11 lb)
RM-G4000-PL-8GTX: 438 g (0.97 lb)
RM-G4000-PL-8GPoE: 596 g (1.31 lb)

PWR-310 Power Module:
PWR-310-LV: 854 g (1.88 lb)
PWR-310-HV: 854 g (1.88 lb)
PWR-310-HVA: 861g (1.90 lb)
PWR-310-LV-P: 830 g (1.83 lb)
PWR-310-HV-P: 845 g (1.86 lb)
Installation

Rack mounting

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)

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 AC Voltage Dips and Interruptions
IEC 61000-4-29 DC Voltage Dips and Interruptions
Cybersecurity

IEC 62443-4-2 Security Level 2
Safety

EN IEC 62368-1
IEC 62368-1
UL 61010-1
UL 61010-2-201
UL 62368-1
Power Substation

IEC 61850-3 Edition 2.0
IEC 61850-90-4
IEEE 1613 Class 2 (EMC)
Railway

EN 50121-4
Traffic Control

NEMA TS2
Shock

IEC 60068-2-27
Vibration

IEC 60068-2-6
Package Drop Test

ISTA 1A
Package Vibration Test

ISTA 1A

Time

RKS-G4028-PL-12XGS-T: 1,532,844 hours
RKS-G4028-PL-PoE-12XGS-T: 1,326,867 hours
Standards

Telcordia (Bellcore), GB

Warranty Period

5 years
Details

See www.moxa.com/warranty

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Software, Firmware, and Drivers

Name	Type	Checksum	Version	Release Date
AOI file for RKS-G4028-PL Series 70.5 KB	Software Package	F8E6E5D17045ABD7C5FD161A9161FEED7E05B7EA275AF7049DE8552DDC7DCAED0BD0946B92F4517C605047D3F75AC0B63AD0D021BB493F9FE8F44219D4662257 SHA-512	v1.0	Jul 07, 2026 Jul 07, 2026 Release notes
MIB file for RKS-G4028-PL Series 423.2 KB	Software Package	13054463C20D8FF74F111B937995DF11EEE75C0AE4743B0B785D1D76FEEE9DFEDC9F48BAF5000A3147BA6B9EF211934010C5EB2F8562C31D0547FA004B2F28C4 SHA-512	v5.0	Jul 07, 2026 Jul 07, 2026 Release notes
GSD file for RKS-G4028-PL Series	Software Package	SHA-512	v1.0	Jul 07, 2026 Jul 07, 2026 Release notes
EDS file for RKS-G4028-PL Series 49.4 KB	Software Package	C4DC824F720A21EDE9CEEF1CDC7F08212CB38D27633764C20E64AB4057F7E70047C7D3C03F5D1373D893E9BD832D72A8FBB39B988D243CD5A93D4103DF6D41F8 SHA-512	v1.0	Jul 07, 2026 Jul 07, 2026 Release notes
Firmware for RKS-G4028-PL Series 91.1 MB	Firmware	28C6796CD72551E96C15CE0CC3FCC0AAD4EFB6B14480614F10F912B66219A077910936EEDD46D5AB4C8D40271444A08F9DC95AC310DD6847DB1A0A1D14A724FA SHA-512	v5.0	Jul 07, 2026 Jul 07, 2026 Release notes

Support Documents

Name	Type	Version	Release Date
Moxa Managed Switch Next-generation OS (v5.x) Command Line Interface Manual 6.8 MB	Manual	v1.1	Jul 07, 2026 Jul 07, 2026
Datasheet for RKS-G4028-PL Series 1.1 MB	Datasheet	v1.0	Jul 07, 2026 Jul 07, 2026
RKS-G4000-PL/RKS-G4000-PL-L3 Series Quick Installation Guide 4.4 MB	QIG	v1.0	Jul 07, 2026 Jul 07, 2026
Moxa Managed Switch MX-NOS (v5.x) User Manual 21.6 MB	Manual	v1.3	Jul 07, 2026 Jul 07, 2026

Available Models (2)

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	Compare RKS-G4028-PL-PoE-12XGS-T	Compare RKS-G4028-PL-12XGS-T
Max. No. of Ports	28	28
10GbE SFP+ Ports	12	12
100/1000/2500 BaseSFP Ports (Expansion Module)	Up to 16 (8 ports per module)	Up to 16 (8 ports per module)
10/100/1000BaseT(X) Ports RJ45 Ports (Expansion Module)	Up to 16 (8 ports per module)	Up to 16 (8 ports per module)
PoE Support	✓	–
L3 Functionality	–	–
Operating Temp.	-40 to 75°C (-40 to 167°F)	-40 to 75°C (-40 to 167°F)
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