Manufacturer product photo · 4×GE + 4×SFP + RS232/RS485
ZJIES3000D-4GT4GB2S
Industrial · Managed L2
Managed DIN-Rail Industrial Ethernet Switch · 4×GE + 4×SFP + RS-232/RS-485
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◆-40 ~ 75°C
◆IP40 Fanless
◆4×SFP + RS232/RS485
◆ERPS Ring <50ms
◆4094 VLANs
◆5-Year Warranty
Overview
The ZJIES3000D-4GT4GB2S is an industrial managed DIN-rail Ethernet switch with 4 × 10/100/1000Base-T ports, 4 × 1000Base-X SFP fiber slots, and built-in 1 × RS-232 + 1 × RS-485 protocol serial ports for legacy serial-device integration. It offers full management — QoS, VLAN, IGMP Snooping/GMRP, Port Trunking, SNMP v1/v2/v3 — and multiple ring-redundancy protocols (STP/RSTP/MSTP/ERPS/ZJRing) for high reliability and interoperability. Its wide-temperature, EMC-hardened design meets demanding industrial field conditions, ideal for fully-gigabit self-healing ring networks that also need serial data integration.
Is This the Right Fit?
Six real deployment scenarios matched to this model's actual datasheet specifications.
Self-Healing Ring Networks for Factory Production LinesBuilt-in STP/RSTP/MSTP, ERPS (G.8032), and ZJRing proprietary ring protocols deliver sub-50ms self-healing failover, keeping fully-gigabit ring topologies online through a single link fault.
Four-Port Gigabit Fiber Uplink for Video/Data AggregationFour 1000Base-X SFP slots (vs. two on the entry-level 3000D models) give this switch enough uplink capacity to aggregate multiple ring segments or CCTV branches onto a single fiber backbone.
Compact DIN-Rail Mounting Inside Electrical CabinetsA 47(W) × 175(H) × 150(D) mm IP40 metal enclosure with default DIN-rail mounting (wall-mount optional) fits directly into standard control-cabinet rail space.
Wide-Temperature Outdoor Cabinet DeploymentRated -40 ~ +75°C operating (storage -40 ~ +85°C) with Level-3 EN61000-4 series EMC immunity, suited to outdoor electrical cabinets facing seasonal extremes.
Legacy Serial-Device Integration via Built-In RS-232/RS-485A dedicated 1 × RS-232 + 1 × RS-485 protocol serial port pair — a capability not found on the sibling 3000D models — lets legacy serial instruments join the Ethernet ring without a separate serial-to-Ethernet gateway.
Selectable Fiber Type & Distance for Site-Specific Fiber RunsMultimode dual-fiber (2 km) or single-mode dual-fiber (10 km) SFP modules, with single- or dual-fiber options, let the same switch match whatever fiber plant is already installed on site.
Not a good fit if:
- Only one power option — AC220V (100–240VAC) single input; no DC24V/48V or dual-redundant power SKU is offered for this model.
- IP40 enclosure only — needs a control cabinet or additional protection for direct outdoor rain/dust exposure.
- No PoE output and no ProfiNet/Modbus-TCP protocol gateway — the RS-232/RS-485 ports are raw serial data ports, not a protocol-conversion PLC gateway.
Key Features
- 4 × 10/100/1000Base-T + 4 × 1000Base-X SFP fiber slots + 1 × RS-232 + 1 × RS-485 protocol serial ports
- AC 220V (100–240 VAC) power input
- Redundancy: STP / RSTP / MSTP / ERPS / ZJRing
- Management: QoS, VLAN, IGMP Snooping / GMRP
- DIN-rail or wall mounting
- Wide operating temperature -40 ~ +75°C
- IP40 ingress protection
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 |
| IEEE802.3x | 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 | 4 × 10/100/1000Base-T, 1 × RS-232, 1 × RS-485 |
| SFP Fiber | 4 × 1000Base-X SFP slots |
| LED Indicators | Power, Link, Fiber, Serial, Status |
| Console | RS-232, RJ45, 9600bps, 8/N/1 |
Power
| AC 220V Input | 4-pin terminal, single input; 100–240 VAC |
| Power Consumption | Max 15 W |
| Power Protection | Reverse-polarity & overload |
| Alarm | 2-pin relay terminal |
Environment
| Standard Temp | -10 ~ +60°C |
| Wide Temp | -40 ~ +75°C |
| Storage Temp | -40 ~ +85°C |
| Humidity | 5–95% non-condensing |
Certification
| EMC | CE, FCC |
| 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 |
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 L2–L4 filtering; port MAC filtering; MAC binding; 802.1X; RADIUS; DDoS self-defense |
| VLAN | Port & 802.1Q VLAN; up to 4094 VLANs (VID 1–4094); management VLAN |
| Link Aggregation | Static LACP; 2 groups × up to 4 ports |
| Ring Redundancy | STP/RSTP/MSTP; ERPS (G.8032); ZJRing self-healing ring <50ms |
| QoS | 4 priority classes (absolute / relative scheduling), mapped by 802.1p/DSCP into 8 hardware 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 |
Physical
| Housing | IP40 metal enclosure |
| Mounting | DIN-rail (default), wall-mount optional |
| Dimensions | 47 (W) × 175 (H) × 150 (D) mm |
Reliability
| MTBF | 320,000 hours |
| Warranty | 5 years |
Models & Ordering
| Model | Product Description | Price |
|---|---|---|
| ZJIES3000D-4GT4GB2S-AC | Industrial managed DIN-rail Ethernet switch — 4 × 10/100/1000Base-T, 4 × 1000Base-X SFP fiber slots, 1 × RS-232 + 1 × RS-485 protocol serial ports, AC 220V (100–240 VAC) power. Multimode dual-fiber 2 km / single-mode dual-fiber 10 km, single- or dual-fiber optional. |
Standard package does not include SFP optical modules.
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 install it
Written for the ZJIES3000D-4GT4GB2S from the manufacturer's datasheet: managed L2, 4 × Gigabit copper + 4 × 1000Base-X SFP slots + 1 × RS-232 + 1 × RS-485 serial port, STP/RSTP/MSTP/ERPS/ZJRing rings, AC 100–240V single input, -40 to +75°C wide-temperature version.
Who it is for
- Water, pumping and utility stations — Sites that still have one RS-485 field bus or an RS-232 controller next to new IP cameras: the serial ports and the Gigabit ring sit in one 47 mm wide DIN-rail unit instead of a switch plus a separate serial device.
- Fiber aggregation points — With 4 SFP slots, two ports close the ring and two more feed fiber spurs to remote cabinets or a second building, where the ZJIES3000D-4GT2GB has only the two ring ports.
- Factory lines with older machines — A cell where a newer PLC is on Ethernet but a scale, printer or old controller only has RS-232 or RS-485; VLANs and QoS with 8 queues per port keep control traffic separate and prioritized.
- Integrators on mains-powered sites — It is offered only as -AC (100–240 VAC, single input), so it suits buildings, plant rooms and cabinets with mains and a UPS rather than DC battery systems.
Where and how to install
- DIN rail inside a sealed cabinet — The fanless metal housing is IP40, so outdoors it must sit inside a sealed cabinet. Mount it on the DIN rail (default) or the optional wall bracket, with the SFP ports facing the fiber splice tray and space below for the cable bend.
- Mains power and backup — Feed the 4-pin terminal with 100–240 VAC through its own breaker. There is only one input, so the switch stops if that feed fails: put it on a UPS together with the NVR or PLC it serves. At 15 W maximum it draws only about 0.07 A at 220 V, so a small UPS runs it for a long time.
- Serial wiring — Run RS-485 on shielded twisted pair, keep A/B polarity the same on every device, terminate both ends of the bus and keep it away from motor and power cables. RS-232 is for short point-to-point links inside the cabinet. Earth the shield at one end only.
- Earthing, surge and copper runs — Bond the cabinet and DIN rail to earth. Add Ethernet surge protectors on copper runs that leave the cabinet and keep each run under 100 m; add a serial surge protector where an RS-485 bus runs between buildings. Fiber between cabinets carries no surge.
- Temperature and condensation — There are two versions: standard -10~60°C and wide -40~75°C; specify the wide one for unheated outdoor cabinets. Humidity is 5–95% non-condensing, so add a filtered vent or small heater, bring cables in from the bottom and keep dust caps on unused SFP slots.
4GT4GB2S or 4GT2GB: ports and ring planning
Both have 4 Gigabit copper ports and the same ring and management software. The 4GT4GB2S adds 2 more SFP slots and the two serial ports but is AC-only; the 4GT2GB has DC 24V/48V redundant versions. A typical layout uses SFP 1–2 for the ring and SFP 3–4 for spurs; every spur's traffic also crosses the ring, so add it to the ring load (for example 4 cameras at an assumed 8 Mbps = 32 Mbps per spur cabinet).
| ZJIES3000D-4GT4GB2S | ZJIES3000D-4GT2GB | |
|---|---|---|
| Copper ports | 4 × 10/100/1000Base-T | 4 × 10/100/1000Base-T |
| Fiber ports | 4 × 1000Base-X SFP | 2 × 1000Base-X SFP |
| Serial ports | 1 × RS-232 + 1 × RS-485 | None |
| SFP module options | MM 2 km / SM 10 km, single or dual fiber | MM 2 km / SM 10 km, single or dual fiber |
| Power input | 100–240 VAC, single input only | AC 100–240V, or DC 12–36V / 36–56V dual redundant |
| Max. power | 15 W | 15 W |
| Ring protocols | STP/RSTP/MSTP, ERPS, ZJRing | STP/RSTP/MSTP, ERPS, ZJRing |
| ZJRing self-healing time | <50 ms | <50 ms |
| Operating temperature | -10~60°C or -40~75°C | -10~60°C or -40~75°C |
| Size (W × H × D) | 47 × 175 × 150 mm | 47 × 175 × 150 mm |
- Pick the 4GT4GB2S when one cabinet must close the ring and also send fiber to one or two remote points, or when an RS-232/RS-485 device has to join the network at the same spot.
- Pick the 4GT2GB for plain ring nodes, and always where the cabinet has only DC power (24V or 48V) or needs two power inputs.
Both columns are from the manufacturer's datasheets; fiber distances are from the ordering tables. 32 Mbps = 4 cameras × 8 Mbps (planning assumption). The datasheet does not list baud rates or operating modes for the two serial ports.
Industrial DIN-Rail Switch FAQ — ZJIES3000D-4GT4GB2S
What ports does the ZJIES3000D-4GT4GB2S offer for Ethernet and serial devices?
It has 4 x 10/100/1000Base-T RJ45 ports, 4 x 1000Base-X SFP fiber slots, plus 1 x RS-232 and 1 x RS-485 serial ports. One DIN-rail unit can therefore link gigabit copper devices, fiber runs and legacy serial equipment such as meters or controllers on the same network.
How is the ZJIES3000D-4GT4GB2S powered?
This version takes AC power through a 4-pin terminal block: single input, 100-240 VAC. Maximum consumption is 15 W, with reverse-polarity and overload protection built in. A 2-pin relay terminal gives a dry-contact alarm output you can wire back to a supervision panel.
Can it run in hot or cold field cabinets?
The standard range is -10 to +60 C and the wide-temperature rating is -40 to +75 C, with storage at -40 to +85 C and 5-95% non-condensing humidity. EMC immunity meets EN61000-4-2/3/4/5/6/8 Level 3, plus IEC60068 shock, free-fall and vibration tests.
Which ring-redundancy protocols does it support?
It supports STP, RSTP and MSTP spanning-tree, ERPS per ITU-T G.8032, and the ZJRing self-healing ring. With 4 x 1000Base-X SFP slots you can build a fully gigabit fiber ring and still hang serial and copper devices off the same unit.
How do I manage and secure the switch?
Management runs over SNMP v1/v2/v3, web, Telnet or the RS-232 console (RJ45, 9600 bps, 8/N/1). It handles port-based and 802.1Q VLANs with IDs up to 4094, L2-L4 ACL filtering, MAC binding, 802.1X with RADIUS, and DDoS self-defense.
How do RS-485 and RS-232 devices talk through the ZJIES3000D-4GT4GB2S?
The switch has 1 × RS-232 and 1 × RS-485 serial port, listed by the manufacturer as protocol serial ports, so a serial device can join the Ethernet ring without a separate converter. The datasheet does not list the baud-rate range, the operating modes (for example TCP server/client or virtual COM) or Modbus gateway support. Before ordering, send us the serial device model, baud rate and protocol, and the software that must read it, and we will confirm the setup.
Is there a DC 24V/48V or dual-power version of the ZJIES3000D-4GT4GB2S?
No. The only ordering version is -AC: 100–240 VAC on a 4-pin terminal with a single input. If the cabinet has only DC power, or the project requires two power inputs, use the ZJIES3000D-4GT2GB-DCL (12–36 VDC) or -DCH (36–56 VDC), which have redundant inputs but no serial ports and 2 SFP slots instead of 4. Otherwise put the 4GT4GB2S on a UPS; at 15 W maximum it is a very small load.
How should I use the four SFP slots on the ZJIES3000D-4GT4GB2S?
The usual layout is two SFP ports for the ERPS or ZJRing ring and two for fiber spurs to remote cabinets, a gate house or a second building. If the switch sits next to the core, you can instead bundle two fiber links into one static LACP group (up to 2 groups of up to 4 ports are supported) for about 2 Gbps toward the core. Do not connect a spur back into the ring at a second point unless that loop is also covered by the ring protocol or RSTP, or it will create a network loop.
Which SFP modules should I order for the ZJIES3000D-4GT4GB2S?
Use 1 Gigabit (1000Base-X) SFP modules; they are not included in the standard package. The ordering table lists multimode dual-fiber up to 2 km and single-mode dual-fiber up to 10 km, with single-fiber as an option. Both ends of a link must match: same fiber mode and speed, and for single-fiber a complementary transmit/receive pair. Support for 100 Mbps SFP modules is not listed, so tell us the far-end device and the distance and we will confirm the right pair before you order.
Can the ZJIES3000D-4GT4GB2S join an ERPS ring with switches from other brands?
Yes, use ERPS (ITU-T G.8032) or RSTP/MSTP for a mixed-brand ring, because these are standard protocols. ZJRing is Zhongxin's own protocol and only runs between Zhongxin switches; the <50 ms self-healing time in the datasheet is stated for ZJRing. For ERPS, every switch needs the same ring ID, control VLAN and ring ports, with exactly one RPL owner. Recovery time in a mixed ring depends on all devices, so unplug a ring link and check before handover; send us the other brand's model and we will check the settings with you.
What power connector does the ZJIES3000D-4GT4GB2S 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 ZJIES3000D-4GT4GB2S for your order.
Ordering questions — samples, shipping, payment, lead time and genuine stock — are answered once on our FAQ page.
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