28-port Gigabit/10Gigabit Layer 2 Managed Industrial Ethernet Switch

16 1000BASE-T RJ45 Ports and 4 10Gigabit SFP+ Ports
8 Gigabit TP/SFP Combo Ports
Support Web, CLI and SNMP
Support QoS, IGMP, 802.1Q VLAN
Support CK-Ring for Ethernet redundancy
Support Relay alarm output, used in Power Supply, Ports and Ring network
High strength IP40 shell and industrial-grade EMC design
Redundant dual 110/220VAC power input or 48VDC power input
Support the standard 19" Rack-Mountable installation
Support -40~85°C wide operating temperature range
Overview Specifications Models Resources

Overview of 28-port Gigabit/10Gigabit Layer 2 Managed Industrial Ethernet Switch

CRS8028M series is 28-port Gigabit/10Gigabit layer 2 industrial Ethernet switch. It provides 16 1000BASE-T Ports, 8 Gigabit TP/SFP Combo Ports and 4 10Gigabit SFP+ Ports.  Abundant numbers of interfaces, bandwidth of Gigabit/10Gigabit combination and ability to transmit large amounts of video, voice and data with high performance and high speed meet the application requirements of large-scale industrial network.

Network management system supports a variety of network protocols and industry standards, such as ARP, NAT, ERPS, STP/ RSTP/MSTP, 802.1Q VLAN, QoS function, IGMP Snooping static multicast function, port trunking, port mirror, etc. It has perfect management functions, supporting port configuration, port statistics, network diagnosis, rapid configuration, online upgrade, loop detection, etc. CLI, WEB, Telnet, SSH, SNMP and other access methods can be supported. It can provide users with good experience with friendly design of network management system interface, simple and convenient operation.

This product supports optional dual AC/DC power supply. The input power supply is two independent power supply circuits which can ensure the normal operation of the device when one power supply fails. When power supply or port has link failure, ALARM indicator will be bright and send out alarm, meanwhile, alarm device connected to the relay will send out alarm for rapid scene troubleshooting. Hardware adopts fanless, low power consumption, wide temperature and voltage design and has passed rigorous industrial standard tests, which can suit for the industrial scene environment with harsh requirements for EMC. It can be widely used in smart grid, rail transit, smart city, safety city, new energy, intelligent manufacturing and other industrial fields.


28-port Gigabit/10Gigabit Layer 2 Managed Industrial Ethernet Switch

Standard & Protocol

IEEE 802.3 for 10Base-T

IEEE 802.3u for 100Base-TX

IEEE 802.3z for 1000Base-X

IEEE 802.3x for Flow Control

IEEE 802.1Q for VLAN
IEEE802.1p for CoS

IEEE802.1d for Spanning Tree Protocol

IEEE802.1w for Rapid Spanning Tree Protocol

Advanced Features 

QoS Setting to improve the quality of the service

Port MAC-address learning and statistics

Port Setting: Enable/Disable, Speed or Mode setting, Flow control

Rate-limit to optimize the bandwidth of network

Port Trunking to expand the bandwidth and improve the efficiency of the network

802.1Q VLAN to control multicast domain

Unicast/multicast MAC-address management

IGMP Snooping to filter multicast traffic

GMRP industrial multicast registration protocol for application in substation

Auto-recovery redundant CK-Ring (full-load failure recovery time < 20ms)
Supports Single-Ring, Tangency-Ring and Intersection-Ring

Warning by relay output

Rich network system management


Web, CLI and SNMP  V1/V2C/V3 management

CLI can login with Telnet and CONSOLE
Port Mirroring to debug online or monitor the data status

Redundancy Protocol



RJ45 port: 10/100/1000BASE-T rate self-adaption, Full/half duplex mode,MDI/MDI-X self-adaption.

SFP interfaces: 1000M SFP/10G SFP+

Console: RS-232 (RJ45 connector) 

Switching Characteristic

10M Forward: 14881pps

100M Forward: 148810pps

1000M Forward: 1488096pps
1000M Forward: 1488096pps
10000M Forward: 14880960pps

Mode: Store and forward

Backplane bandwidth: 128G

Cache: 1.5Mbits

MAC: 16K

Power Supply

AC Input: redundant 100~240V AC(50~60Hz 1.2A)

DC Input: redundant 36~48V DC

Relay: port, power and ring network errors alarm

Max. capcity: 1A@24VDC

Physical Characteristic

Dimensions(W×H×D): 440×44×274 mm

Net Weight: 3.15kg

Case: IP40 metal case

Install: Standard 1U Rack-Mount

Environment Limits

Work Temp: -40~75°C

Storage Temp: -40~85°C

Relative Humidity:5%~95%(non-condensing)

Industrial Standard

IEC61000-4-2 (ESD): Power ±2KV Contact, ±15KV Air
IEC61000-4-4 (EFT):Power ±4KV, Data Cable ±4KV
IEC61000-4-5 (Surge):Power ±2KV CM/ ±1KV DM, Relay±2KV CM/ ±1KV DM
IEC60068-2-27 (Shock)IEC60068-2-32 (Free Fall)
IEC61000-6-2 (General Industrial Standard)


5 years


Available Models



16 1000BASE-T RJ45 Ports,8 Gigabit TP/SFP Combo Ports,4  10Gigabit SFP+ Ports





  CRS7228 Series Datasheet