The RKS-G4028 Series is designed to meet the rigorous demands of mission-critical applications for industry and business, such as power substation automation systems (IEC 61850-3, IEEE 1613), railway applications (EN 50121-4), and factory automation systems. The RKS-G4028 Series’ Gigabit and Fast Ethernet backbone, redundant ring, and 24 VDC, 48 VDC, or 110/220 VDC/VAC dual isolated redundant power supplies increase the reliability of your communications and save on wiring costs.
The modular design of the RKS-G4028 Series also makes network planning easy, and allows greater flexibility by letting you install up to 28 Gigabit ports with various connector types.
| Name | Action |
|---|---|
| Download |
| Input/Output Interface | |
| Alarm Contact | Channels 1 relay output with current carrying capacity of 2 A @ 24 VDC |
| Ethernet Interface | |
| 10/100/1000BaseT(X) Ports (RJ45 connector) | RKS-G4028-4GT models: 4 |
| RKS-G4028-L3-4GT models: 4 | |
| 100/1000BaseSFP Slots | RKS-G4028-4GS models: 4 |
| RKS-G4028-L3-4GS models: 4 | |
| RKS-G4028-PoE-4GS models: 4 | |
| RKS-G4028-L3-PoE-4GS models: 4 | |
| Module | There are 3 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/6-port modules with 10/100/1000BaseT(X), 10/100BaseT(X), 100/1000BaseSFP, or 100BaseFX (SC/ST connector) interfaces.
Refer to Expansion Modules in the Accessories section for a full list of supported interface modules. |
| Standards | IEEE 802.1D-2004 for Spanning Tree Protocol |
| 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 802.3u for 100BaseT(X) and 100BaseFX | |
| IEEE 802.3x for flow control | |
| IEEE 802.3z for 1000BaseSX/LX/LHX/ZX | |
| IEEE 802.3bt for Power over Ethernet | |
| Ethernet Software Features | |
| Management | IPv4/IPv6, Flow control, Back Pressure Flow Control, DHCP Server/Client, ARP, RARP,LLDP, Port Mirror, Linkup Delay, SMTP, SNMP Trap, SNMP Inform, SNMPv1/v2c/v3,RMON, TFTP, SFTP, HTTP, HTTPS, Telnet, Syslog, Private MIB |
| Filter | GMRP, GVRP, GARP, 802.1Q, IGMP Snooping v1/v2/v3, IGMP Querier |
| Redundancy Protocols | STP, RSTP, Turbo Ring v2, Turbo Chain, Ring Coupling, Dual-Homing, Link Aggregation, Loop Protection, MSTP |
| Routing Redundancy | L3 models: VRRP |
| Security | Broadcast storm protection, Rate Limit, Access control list, Static port lock, Sticky MAC, HTTPS/SSL, SSH, RADIUS, TACACS+, Login and password policy, Secure boot,MAC authentication bypass, Trust access control |
| Time Management | SNTP, IEEE 1588v2 PTP (hardware-based), NTP Server/Client, NTP Authentication |
| Protocols | IPv4/IPv6, TCP/IP, UDP, ICMP, ARP, RARP, TFTP, DNS, NTP Client, DHCP Server,DHCP Client, 802.1X, QoS, HTTPS, HTTP, Telnet, SMTP, SNMPv1/v2c/v3, RMON, Syslog |
| Unicast Routing | L3 models: OSPF, Static Route |
| 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 | MMS |
| Switch Properties | |
| IGMP Groups | 2048 |
| Jumbo Frame Size | 9.6 KB |
| MAC Table Size | 16 K |
| Max. No. of VLANs | 256 |
| Packet Buffer Size | 1.5 Mbits |
| Priority Queues | 8 |
| VLAN ID Range | VID 1 to 4094 |
| USB Interface | |
| Storage Port | USB Type A |
| MicroSD Interface | |
| Storage Port | MicroSD card |
| Serial Interface | |
| Console Port | RS-232 (RJ45) |
| Power Parameters | |
| Total PoE Power Budget | PoE models: 300 W |
| Max. PoE Power Output per Port | PoE models: |
| IEEE 802.3af: 15.4 W | |
| IEEE 802.3at: 30 W | |
| IEEE 802.3bt: 90 W | |
| Input Voltage | RKS-G4028-LV models: 24/48 VDC |
| RKS-G4028-2LV models: 24/48 VDC (redundant dual inputs) | |
| RKS-G4028-HV models: 110/220 VAC, 110/220 VDC | |
| RKS-G4028-2HV models: 110/220 VAC, 110/220 VDC (redundant dual inputs) | |
| PoE models: 48 VDC (for the PoE system) | |
| Operating Voltage | RKS-G4028-LV/2LV models: 18 to 72 VDC |
| RKS-G4028-HV/2HV 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 | RKS-G4028-LV/2LV models: |
| Max. 2.53 A @ 24 VDC | |
| Max. 1.25 A @ 48 VDC | |
| RKS-G4028-HV/2HV models: | |
| Max. 0.55 A @ 110 VDC | |
| Max. 0.29 A @ 220 VDC | |
| Max. 1.01 A @ 110 VAC | |
| Max. 0.62 A @ 220 VAC | |
| EPS (PoE models only): | |
| Max. 7.50 A @ 48 VDC | |
| Physical Characteristics | |
| IP Rating | IP30 |
| Dimensions | 440 x 44 x 300 mm (17.32 x 1.37 x 11.81 in) |
| Weight | RKS-G4028-LV/HV models: 4900 g (10.80 lb) |
| RKS-G4028-2LV/2HV models: 5200 g (11.46 lb) | |
| RKS-G4028-PoE-LV/HV models: 5000 g (11.02 lb) | |
| RKS-G4028-PoE-2LV/2HV models: 5300 g (11.68 lb) | |
| Installation | Rack mounting |
| Environmental Limits | |
| 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) |
| Standards and Certifications | |
| Safety | EN 62368-1, UL 62368-1, UL 61010 |
| EMC | EN 55032/35 |
| 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: 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 |
| Freefall | IEC 60068-2-32 |
| Shock | IEC 60068-2-27 |
| Vibration | IEC 60068-2-6 |
| MTBF | |
| Time | RKS-G4028-4GT-HV models: 572,888 hours |
| RKS-G4028-4GT-2HV models: 518,894 hours | |
| RKS-G4028-4GS-HV models: 529,925 hours | |
| RKS-G4028-4GS-2HV models: 483,436 hours | |
| RKS-G4028-4GT-LV models: 548,589 hours | |
| RKS-G4028-4GT-2LV models: 479,574 hours | |
| RKS-G4028-4GS-LV models: 508,639 hours | |
| RKS-G4028-4GS-2LV models: 449,160 hours | |
| RKS-G4028-PoE-4GS-HV models: 508,190 hours | |
| RKS-G4028-PoE-4GS-2HV models: 465,282 hours | |
| RKS-G4028-PoE-4GS-LV models: 488,598 hours | |
| RKS-G4028-PoE-4GS-2LV models: 433,472 hours | |
| Standards | Telcordia (Bellcore), GB |
| Package Contents | |
| Device | 1 x RKS-G4028 Series switch |
| Installation Kit | 2 x rack-mounting ear |
| 4 x protective caps for unused SFP ports (for RKS-G4028-GS models only) | |
| 8 x round stickers for module screws | |
