Series representative image · actual unit: 24×GE + 4×SFP
ZJIES6028M-24GT4GB-DC
Managed L2 · IEC61850-3 Rack
Managed Layer-2 19-inch Rack Gigabit Switch · IEC61850-3 · 24×GE + 4×SFP
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◆IEC61850-3
◆-40 ~ 75°C
◆19-inch 1U Rack
◆ZJRing Self-Heal <20ms
◆5-Year Warranty
Overview
The ZJIES6028M-24GT4GB-DC is an IEC61850-3 compliant industrial managed Layer-2 19-inch rack-mount gigabit switch with 24 × 10/100/1000Base-T copper ports and 4 × 1000Base-X SFP fiber slots. It provides full management — QoS, VLAN, IGMP Snooping/GMRP, Port Trunking, SNMP v1/v2/v3 — and ring-redundancy protocols (STP/RSTP/MSTP/ERPS/ZJRing) with self-healing under 20 ms. Redundant power input, wide-temperature design and strong EMC immunity make it suitable for substation automation and demanding industrial sites. The ZJIES6028M series scales to 28 gigabit ports across many copper/fiber configurations.
Key Features
- IEC61850-3 compliant — substation-grade reliability
- 24 × 10/100/1000Base-T + 4 × 1000Base-X SFP (series scales to 28 GbE)
- Redundancy: STP / RSTP / MSTP / ERPS (self-heal <50ms) / ZJRing (self-heal <20ms)
- Management: QoS, VLAN, IGMP Snooping / GMRP, SNMP v1/v2/v3
- AC 220V (AC/DC 100–240V), single/dual redundant power
- Standard 19-inch 1U rack mounting
- IP40 metal enclosure · wide temperature -40 ~ +75°C
Specifications
IEEE Standards
| IEEE802.3 | 10BaseT Ethernet |
| IEEE802.3u | 100Base-T(X) & 100Base-FX Fast Ethernet |
| IEEE802.3ab | 1000Base-T(X) Ethernet |
| IEEE802.3z | 1000Base-X Ethernet |
| IEEE802.3ae | 10GBase-X |
| IEEE802.3x | Flow Control |
| IEEE802.3d | Spanning Tree Protocol |
| IEEE802.1w | Rapid Spanning Tree Protocol |
| IEEE802.1s | Multiple Spanning Tree Protocol |
| ITU-T G.8032 | Ethernet Ring Protection Switching (ERPS) |
| IEEE802.1p | Class of Service |
| IEEE802.1Q | VLAN Tag |
| IEEE802.3ad | LACP (Link Aggregation) |
| IEEE802.1x | User Authentication |
| IEEE802.1ab | LLDP |
Switching
| MAC Address Table | 8K |
| Packet Buffer | 4 Mbit |
| Forwarding | Store-and-forward |
Interfaces
| RJ45 Ports | 24 × 10/100/1000Base-T |
| Fiber Ports | 4 × 1000Base-X SFP slots |
| Optical Distance | Multimode 2 km; single-mode 20 / 40 / 60 / 120 km optional |
| LED Indicators | Power, Link, Fiber, Status |
| Console | RS-232, RJ45, 9600bps, 8/N/1 |
Software Features
| MIB | RFC1215, RFC1213 MIB-II, RFC1157 SNMP-MIB, RFC1493 Bridge-MIB, RFC2674 VLAN-MIB, RFC1643, RFC1757, RSTP-MIB, Private MIB, LLDP-MIB |
| Management | SNMP v1/v2/v3; Web, Telnet, serial CLI; DHCP client; login password |
| Security | ACL; port MAC filtering; MAC binding; 802.1X; RADIUS; DDoS self-defense |
| VLAN | Port & 802.1Q VLAN; up to 64 VLANs (VID 1–4094); management VLAN |
| Link Aggregation | Static LACP; 2 groups × up to 4 ports |
| Ring Redundancy | STP/RSTP/MSTP; ERPS (G.8032) <50ms; ZJRing self-healing ring <20ms |
| QoS | 4 priority classes (internal priority scheduling), mapped by 802.1p/DSCP into 8 queues per port |
| Port Mirroring | One-way & two-way port mirroring |
| IGMP Multicast | IGMP Snooping v1/v2; up to 256 groups |
| Rate Limiting | Ingress/egress limiting, min 64 Kbps |
| Storm Suppression | Broadcast, multicast & unknown-unicast |
| Maintenance | Syslog, RMON, Ping, LLDP |
| SNTP | SNTP supported |
| Firmware | Web & serial TFTP upgrade |
| Config File | Import / export supported |
Power
| Terminal | 4-pin power + 2-pin alarm terminal |
| Input | Single/dual optional; AC/DC 100–240V |
| Alarm | 220V, max 2A |
| Power Consumption | Max 30 W |
| Power Protection | Reverse-polarity & overload |
Physical
| Housing | IP40 metal enclosure |
| Mounting | 19-inch standard 1U rack |
| Dimensions | 440 (W) × 44 (H) × 240 (D) mm |
Certification
| EMC | CE, FCC |
| Substation | IEC61850-3 |
| EMI | FCC Part 15, EN 55032 (CISPR 32) Class A |
| EMS | EN61000-4-2/3/4/5/6/8 Level 3 |
| Shock | IEC60068-2-27 |
| Free Fall | IEC60068-2-32 |
| Vibration | IEC60068-2-6 |
| Green | RoHS, WEEE |
Environment
| Standard Temp | -10 ~ +60°C |
| Wide Temp | -40 ~ +75°C |
| Storage Temp | -40 ~ +85°C |
| Humidity | 5–95% non-condensing |
Reliability
| MTBF | 320,000 hours |
| Warranty | 5 years |
Models & Ordering
| Model | Product Description | Price |
|---|---|---|
| ZJIES6028M-24GT4GB-DC | Industrial managed L2 rack Ethernet switch — 24 × 10/100/1000Base-T + 4 × 1000Base-X SFP slots, AC 220V (AC/DC 100–240V) power. Multimode dual-fiber 2 km / single-mode dual-fiber 10 km, single- or dual-fiber optional. | |
| ZJIES6028M-24GT2GB-DC | Industrial managed L2 rack Ethernet switch — 24 × 10/100/1000Base-T + 2 × 1000Base-X SFP slots, AC 220V (AC/DC 100–240V) power. Multimode dual-fiber 2 km / single-mode dual-fiber 10 km, single- or dual-fiber optional. | |
| ZJIES6028M-24GT-DC | Industrial managed L2 rack Ethernet switch — 24 × 10/100/1000Base-T, AC 220V (AC/DC 100–240V) power. | |
| ZJIES6028M-16GT-AC | Industrial managed L2 rack Ethernet switch — 16 × 10/100/1000Base-T, AC 220V (AC/DC 100–240V) power. | |
| ZJIES6028M-16GT2F-AC | Industrial managed L2 rack Ethernet switch — 16 × 10/100/1000Base-T + 2 × 1000Base-X fixed fiber, AC 220V (AC/DC 100–240V) power. Multimode dual-fiber 2 km / single-mode dual-fiber 10 km, single- or dual-fiber optional. | |
| ZJIES6028M-16GT8GB-AC | Industrial managed L2 rack Ethernet switch — 16 × 10/100/1000Base-T + 8 × 1000Base-X SFP slots, AC 220V (AC/DC 100–240V) power. Multimode dual-fiber 2 km / single-mode dual-fiber 10 km, single- or dual-fiber optional. | |
| ZJIES6028M-8GT8GB-AC | Industrial managed L2 rack Ethernet switch — 8 × 10/100/1000Base-T + 8 × 1000Base-X SFP slots, AC 220V (AC/DC 100–240V) power. Multimode dual-fiber 2 km / single-mode dual-fiber 10 km, single- or dual-fiber optional. | |
| ZJIES6028M-8GT16GB-AC | Industrial managed L2 rack Ethernet switch — 8 × 10/100/1000Base-T + 16 × 1000Base-X SFP slots, AC 220V (AC/DC 100–240V) power. Multimode dual-fiber 2 km / single-mode dual-fiber 10 km, single- or dual-fiber optional. | |
| ZJIES6028M-8GT20GB-AC | Industrial managed L2 rack Ethernet switch — 8 × 10/100/1000Base-T + 20 × 1000Base-X SFP slots, AC 220V (AC/DC 100–240V) power. Multimode dual-fiber 2 km / single-mode dual-fiber 10 km, single- or dual-fiber optional. | |
| ZJIES6028M-8GT16F4GB-AC | Industrial managed L2 rack Ethernet switch — 8 × 10/100/1000Base-T + 16 × 1000Base-X fixed + 4 × 1000Base-X SFP slots, AC 220V (AC/DC 100–240V) power. Multimode dual-fiber 2 km / single-mode dual-fiber 10 km, single- or dual-fiber optional. |
SFP slots do not include optical modules ('-F' variants ship with fixed fiber). Optical reach: multimode 2 km; single-mode 20/40/60/120 km optional. The requested model is ZJIES6028M-24GT4GB-DC.
Dimensions
unit: mm
Your Brand. Factory-Direct Supply.Neutral casing, ready for your logo · Protocol-level customization · Small batches welcome.
Custom & OEM →Who uses it, where it goes and how to plan the network
Written for the ZJIES6028M-24GT4GB-DC from its own specifications: L2 managed 19-inch 1U rack switch, 24 × 10/100/1000Base-T copper plus 4 × 1000Base-X SFP slots, ZJRing <20ms / ERPS <50ms, IEC61850-3, AC/DC 100–240V input.
Who it is for
- Utilities and substations — IEC61850-3 compliance, EN61000-4 Level 3 immunity and an AC/DC 100–240V input that suits station supplies make it a fit for substation automation LANs. With 4 SFP slots it can sit in the ring and still send two fibre uplinks to the station-level core or to a second LAN.
- Control-room aggregation for CCTV and ITS — The control-room node of a field ring: 2 SFP ports for the ring, 2 SFP ports bundled with static LACP into a 2 Gbps link to the core, and 24 copper ports for NVRs, decoders and servers.
- Factories and PLC networks — Up to 64 VLANs keep PLC, HMI, camera and office traffic apart, and 802.1p/DSCP priority with 8 queues per port keeps control traffic ahead of video; storm suppression stops a looped or faulty device from flooding the line.
- System integrators and OEM projects — Web, Telnet, CLI and SNMP v1/v2/v3 management, configuration import/export for cloning many units, and project-level customization and OEM supported on this page.
Where and how to install
- Rack position and depth — It is a 19-inch 1U unit (440 × 44 × 240 mm), so check that the cabinet has at least 240 mm of usable depth plus room for cables at the front. The IP40 metal housing is for indoor cabinets and control rooms, not open outdoor mounting; support long, heavy cabinets with a rail or shelf under the switch.
- Power and alarm wiring — The 4-pin power terminal takes AC/DC 100–240V, single or dual. For redundancy feed the two inputs from different sources (for example station DC and a UPS), each with its own breaker; the unit draws max 30 W. Wire the 2-pin alarm relay (220V, max 2A) to the RTU or alarm panel so a lost input is reported.
- Fibre and SFP handling — The 4 SFP slots come without modules. Use the same mode at both ends (multimode up to 2 km, single-mode for longer links), keep dust caps on until patching, clean connectors before plugging in and respect the bend radius in the cabinet. Copper ports stay within 100 m per run.
- Grounding and surge — Bond the chassis to the cabinet earth bar with a short conductor. EMS immunity is EN61000-4 Level 3, but copper cables that leave the building or cross a switchyard still need surge protectors at both ends; where possible use fibre for those links.
- First setup over the console — Before connecting it to the live network, configure it over the RJ45 console (RS-232, 9600bps, 8/N/1) or the web interface: management IP and VLAN, new login password, SNMP v3 instead of v1/v2, and the ring settings. Export the configuration file and keep it so a replacement unit can be loaded in minutes.
- Temperature and condensation — The standard version is rated -10~60°C and the wide-temperature version -40~75°C; order the wide-temperature version for unconditioned rooms and roadside or yard cabinets. Humidity is 5–95% non-condensing, so seal cable entries and use a cabinet heater or ventilation where nights are cold and humid.
Ports and ring planning
Four SFP slots give room for a fibre ring plus fibre uplinks. A common split is 2 slots for the ring and 2 slots either as separate uplinks to two core switches or bundled into one 2 Gbps static LACP group. All 24 copper ports stay free for devices; at an assumed 6 Mbps per camera, 24 cameras use about 144 Mbps.
| ZJIES6028M-24GT4GB-DC | |
|---|---|
| Copper ports | 24 × 10/100/1000Base-T RJ45 |
| Fibre ports | 4 × 1000Base-X SFP (modules not included) |
| Fibre reach (by module) | Multimode 2 km; single-mode 20/40/60/120 km |
| Ring protocols and recovery | ZJRing <20ms; ERPS (G.8032) <50ms; STP/RSTP/MSTP |
| Max switches per ring | Not listed |
| Link aggregation | Static LACP, 2 groups × up to 4 ports |
| VLAN / multicast | 64 VLANs (VID 1–4094); IGMP Snooping v1/v2, 256 groups |
| 24 cameras at 6 Mbps each | ≈144 Mbps ≈ 14% of 1 Gbps |
| PoE output | None |
| MAC table / buffer | 8K MAC / 4 Mbit, store-and-forward |
| Power input / consumption | AC/DC 100–240V, single or dual / max 30 W |
| Operating temperature | -10~60°C standard; -40~75°C wide-temp |
| Housing / mounting / size | IP40 metal / 19-inch 1U / 440 × 44 × 240 mm |
- Pick the ZJIES6028M-24GT4GB-DC for the control-room or aggregation node: ring on 2 SFP, fibre uplinks on the other 2.
- Pick the ZJIES6028M-24GT2GB-DC for the ordinary field nodes of the same ring, which only need two fibre ports.
- Pick a Layer-3 ZJIES6028M-HI model, such as the ZJIES6028M-HI-24GT4GB-DC, if the node must also route between VLANs or run OSPF/VRRP.
All values are from this page's specification table. Camera bandwidth assumes 6 Mbps per 4 MP camera and is arithmetic, not a manufacturer figure; the maximum number of switches per ring is not listed, so ask us for large rings.
Managed 28-Port Industrial Switch FAQ — ZJIES6028M-24GT4GB-DC
What can I do with the 4 SFP fiber slots?
The -24GT4GB-DC pairs 24 × 10/100/1000Base-T copper ports with 4 × 1000Base-X SFP slots. Two slots can close a protected fiber ring while the other two serve as spare uplinks — for example one link to a second aggregation site and one to a local NVR room — without adding a second switch.
What fiber distances do the SFP slots support?
Each 1000Base-X SFP slot accepts multimode optics for 2 km or single-mode optics for 20, 40, 60 or 120 km. Mixing is allowed per slot, so short intra-plant hops and a long run to a remote station can terminate on the same switch.
Which ring redundancy protocols are supported?
STP, RSTP and MSTP for standard spanning-tree interoperability, ERPS per ITU-T G.8032 with recovery under 50 ms, and the proprietary ZJRing self-healing ring that restores service in under 20 ms. LACP link aggregation (2 groups of up to 4 ports) adds bandwidth and per-trunk redundancy.
What security features protect field networks?
ACLs, port MAC filtering and MAC binding stop unauthorized devices; 802.1X with RADIUS authenticates what plugs in; DDoS self-defense protects the CPU. Storm suppression for broadcast, multicast and unknown unicast, plus rate limiting from 64 Kbps, contain misbehaving nodes before they take down the ring.
How is configuration backed up and restored?
Configuration files can be exported and imported, so a commissioned setup is cloned to spares or restored after replacement in minutes. Firmware upgrades run over the web interface or serial TFTP, and the RS-232 console (RJ45, 9600 bps, 8/N/1) remains available for out-of-band recovery.
Is it suitable for substation and heavy industrial use?
Yes — it is IEC61850-3 compliant with wide-temperature design and strong EMC immunity, built for substation automation and similarly harsh sites. Redundant power input on AC/DC 100–240V (single or dual optional) and the ZJIES6028M platform, which scales to 28 gigabit ports, cover growing installations.
Can I bundle two SFP ports of the ZJIES6028M-24GT4GB-DC into a 2 Gbps uplink?
Yes. Link aggregation is listed as static LACP with 2 groups of up to 4 ports, so two SFP ports can form one 2 Gbps trunk to a core switch while the other two SFP ports run the ring. The switch at the other end must support static aggregation (IEEE802.3ad) on the same two ports. A single video stream still travels on one member link, so the gain is for many streams together, and if one fibre fails the trunk keeps running at 1 Gbps.
Do I have to buy SFP modules from you, or can I use third-party modules in the ZJIES6028M-24GT4GB-DC?
The 4 slots ship without modules and take 1000Base-X gigabit SFPs; third-party compatibility is not listed on the page. Many industrial switches accept standard modules, but if a module is not recognised the port stays down, so the safe way is to order modules with the switch or send us your module's brand and part number first. Use wide-temperature modules if the switch is the -40~75°C version in an unconditioned cabinet, because the module also has to survive that range.
Should I choose the rack-mount ZJIES6028M-24GT4GB-DC or the DIN-rail ZJIES3000D-24GT4GB?
Both are managed switches with 24 copper and 4 SFP ports by name; the choice is mainly where it goes. The ZJIES6028M-24GT4GB-DC is a 19-inch 1U unit (440 × 44 × 240 mm) for relay rooms, control rooms and racks, is IEC61850-3 compliant and takes AC/DC 100–240V. The ZJIES3000D-24GT4GB is the DIN-rail model for field cabinets; check its own page for its power input and certifications, and tell us the cabinet type and supply voltage if you are unsure.
The name ends in -DC: can the ZJIES6028M-24GT4GB-DC run from a 110 V or 220 V DC station battery, or from 24/48 V DC?
The page lists the input as AC 220V with a range of AC/DC 100–240V, single or dual. Nominal 110 V DC and 220 V DC station supplies are inside that range; 24 V and 48 V DC are not, so it cannot run from a 24/48 V DC panel supply. A 220 V battery on float or boost charge can rise above 240 V, so check your system's maximum voltage and tell us before ordering. The input has reverse-polarity and overload protection.
Does the ZJIES6028M-24GT4GB-DC support IEEE 1588 PTP time synchronisation for a substation?
PTP (IEEE 1588) is not listed for this model; only SNTP is listed, which sets the switch's own clock and log timestamps. If your protection or process-bus scheme needs PTP through the switch, confirm with us before ordering. For GOOSE and other critical traffic you can use the listed 802.1Q VLANs (up to 64) and 802.1p priority mapped into 8 queues per port.
What power connector does the ZJIES6028M-24GT4GB-DC have, and do I need to confirm it before ordering?
Yes, please confirm the power connector with us before ordering. For Zhongxin Shutong products the power input type and connector can differ between versions and batches, so tell us your supply (AC or DC and the voltage), how you will wire it in the cabinet and your country's plug standard, and we confirm the exact connector and supply version of the ZJIES6028M-24GT4GB-DC for your order.
Ordering questions — samples, shipping, payment, lead time and genuine stock — are answered once on our FAQ page.
Our own line — Zhongxin Shutong industrial switches1,500 m² clean rooms100% port-by-port tested-40…+75 °C rated, cycled to +85 °CEN 61000-4 Level 3 EMC immunitySerial-number traceability on every unitISO 9001 · 14001 · 27001 · CMMI L3See the factory →See all certifications →
Every order, any brand: there is no return policy — defective units are covered by free spare units agreed per order and written into the quotation. Warranty up to 5 years on the Zhongxin Shutong industrial line, manufacturer warranty on other brands. Terms, warranty & RMA
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