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Brand: MOXA
Moxa MGate MB3480 4-Port Standard Modbus TCP Gateway
Description
What the MGate MB3480 converts between
MGate MB3480 is listed by Moxa as: 4-port standard Modbus gateway. A four-port standard Modbus gateway that converts four serial lines to Modbus TCP, with each port independently configurable as RS-232, RS-422 or RS-485.
Key figures from the Moxa page: the power input is 12 to 48 VDC; operating temperature is 0 to 55°C (32 to 131°F); dimensions are 35.5 x 102.7 x 181.3 mm (1.40 x 4.04 x 7.14 in); weight is 740 g (1.63 lb); the enclosure is rated IP30 For the MGate MB3480, the two screws provided with the wall-mounting kit must be used to fasten the kit to the bottom of the MGate, and the MGate must be properly attached to the terminal block for power input..
Standards and approvals printed for this model include safety standard IEC 62368-1; UL 62368-1; IEC 60950-1. Approvals can differ between variants of a series, so check the one on the exact order code.
Technical specifications
| Parameter | Specification |
|---|---|
| 10/100BaseT(X) Ports (RJ45 connector) | Auto MDI/MDI-X connection |
| Magnetic Isolation Protection | 1.5 kV (built-in) |
| Ethernet Software Features: Industrial Protocols | Modbus TCP Client (Master); Modbus TCP Server (Slave) |
| Management | ARP; DHCP Client; DNS; HTTP; HTTPS; SNMPv1/v2c/v3 Trap; TCP/IP; Telnet; UDP; SMTP; SNMP Trap; NTP Client |
| Time Management | NTP Client |
| Authentication | Local database |
| Encryption | HTTPS; AES-128; AES-256; SHA-256 |
| Security Protocols | HTTPS (TLS 1.2) |
| No. of Ports | 4 |
| Connector | DB9 male |
| Serial Standards | RS-232/422/485 (software-selectable) |
| Baudrate | 50 bps to 921.6 kbps |
| Data Bits | 7, 8 |
| Parity | None; Even; Odd; Space; Mark |
| Stop Bits | 1, 2 |
| Flow Control | DTR/DSR; RTS Toggle (RS-232 only); RTS/CTS |
| RS-485 Data Direction Control | ADDC (automatic data direction control) |
| Pull High/Low Resistor for RS-485 | 1 kilo-ohm, 150 kilo-ohms |
| Terminator for RS-485 | 120 ohms |
| RS-232 | TxD, RxD, RTS, CTS, DTR, DSR, DCD, GND |
| RS-422 | Tx+, Tx-, Rx+, Rx-, GND |
| RS-485-2w | Data+, Data-, GND |
| RS-485-4w | Tx+, Tx-, Rx+, Rx-, GND |
| Serial Software Features: Industrial Protocols | Modbus RTU/ASCII Master; Modbus RTU/ASCII Slave |
| Max. No. of Client Connections | 16 |
| Max. No. of Server Connections | 32 |
| Input Voltage | 12 to 48 VDC |
| Input Current | 365 mA @ 12 VDC |
| Power Connector | Power jack and terminal block |
| Housing | Metal |
| IP Rating | IP30 For the MGate MB3480, the two screws provided with the wall-mounting kit must be used to fasten the kit to the bottom of the MGate, and the MGate must be … |
| Dimensions (with ears) | 35.5 x 102.7 x 181.3 mm (1.40 x 4.04 x 7.14 in) |
| Dimensions (without ears) | 35.5 x 102.7 x 157.2 mm (1.40 x 4.04 x 6.19 in) |
| Weight | 740 g (1.63 lb) |
| Operating Temperature | 0 to 55°C (32 to 131°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 |
| EMI | CISPR 32, FCC Part 15B Class A |
| EMS | IEC 61000-4-2 ESD: Contact: 4 kV; Air: 8 kV; IEC 61000-4-3 RS: 80 MHz to 1 GHz: 3 V/m; IEC 61000-4-4 EFT: Power: 1 kV; Signal: 0.5 kV; IEC 61000-4-5 Surge: Power: 1 … |
| Safety | IEC 62368-1; UL 62368-1; IEC 60950-1 |
| Warranty Period | 5 years |
Selecting the right variant
It reduces hardware count where four Modbus serial segments share a location, for example a motor control centre with several multi-function relays.
On the practical side, the housing is metal; the stated MTBF is 1,213,993 hrs; the warranty period is 5 years. Treat the MTBF as a manufacturer prediction under its stated method, not a guarantee for your site.
What to confirm before ordering: the port count (4 for this model) and the temperature grade. Our team in Muscat works from the exact code on your enquiry, as an independent supplier.
Related models in the MGate MB3480 family
Moxa groups the MGate MB3480 with 2 related order codes under one family: MGate MB3180, MGate MB3280, MGate MB3480. Suffixes such as -T generally mark wide-temperature versions and fiber suffixes (M, S, MM, SS with SC or ST) mark the connector and fiber type, but the order code printed on the datasheet governs.
Documents and quotation
The Moxa datasheet for this family (moxa-mgate-mb3180-mb3280-mb3480-series-datasheet-v1.9) is attached to this page. Request a quotation with the exact order code, quantity and delivery location, and we will respond with availability.
More products in this range: Industrial Communications.
Datasheets & Documents
- Datasheet Moxa MGate MB3180-MB3280-MB3480 series datasheet v1.9 Download
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About brand
Moxa is the Taiwanese maker of industrial networking equipment: Ethernet switches, serial device servers, protocol gateways, media converters, secure routers and remote I/O. It was founded in Taiwan in 1987 and started with serial communication products before moving into industrial Ethernet. It is headquartered in Taipei.
Seven Star LLC is an independent supplier in Muscat. We list Moxa switches, serial servers, gateways and converters, and supply them to control system integrators, utilities, oil and gas and building automation projects in Oman and the GCC by exact model.
Moxa at a glance
| Established | 1987, Taiwan |
|---|---|
| Headquarters | Taipei, Taiwan |
| First products | Serial communication boards and serial connectivity |
| Product families | Unmanaged, managed and rackmount industrial Ethernet switches, serial device servers, Modbus and fieldbus gateways, media converters, serial converters, secure routers, remote I/O and industrial computers |
Moxa products we list
| Family | Models | Typical use |
|---|---|---|
| Unmanaged switches | EDS-205A, EDS-208A, EDS-2008-EL, EDS-2010-ML, EDS-308, EDS-316, EDS-G2005-EL, EDS-G205, EDS-G308, EDS-P206A PoE | Simple plug-and-play networks inside control panels |
| Managed switches | EDS-405A, EDS-408A, EDS-508A, EDS-510A, EDS-510E, EDS-518A, EDS-528E, EDS-G508E, EDS-G509, EDS-G512E, ICS-G7528A rackmount | Redundant ring networks, VLANs and diagnostics for SCADA and DCS |
| Serial device servers | NPort 5110A, 5150A, 5210A, 5250A, 5410, 5450, 5610-8, 5650-8, 6150, IA5150A | Putting RS-232/422/485 devices on an Ethernet network |
| Protocol gateways | MGate MB3180, MB3170, MB3280, MB3270, 5101-PBM-MN, 5105-MB-EIP, 5109 DNP3, 5114 IEC 104 | Linking Modbus RTU/TCP, PROFIBUS, EtherNet/IP, DNP3 and IEC 60870-5-104 systems |
| Converters, routers and I/O | IMC-21A, IMC-101, IMC-21GA, TCF-142, TCC-100, TCC-80, TCC-120, EDR-G9010 router, ioLogik E2210 | Fibre links over long distances, serial conversion, network security and remote I/O |
The choice between switch types follows the network. An unmanaged switch simply forwards traffic and suits a small, isolated panel. A managed switch adds redundancy protocols (Moxa's Turbo Ring recovers a broken ring in milliseconds), VLANs to separate traffic, port mirroring and alarms, which a SCADA or DCS network needs. The suffix on a Moxa model also matters: "-T" means a wide operating temperature range (typically -40 to 75 °C), which is the safe choice for outdoor cabinets in the Gulf summer. "-MM-SC" or "-S-SC" means multi-mode or single-mode fibre with SC connectors.
Where Moxa products are used
In Oman and the GCC, Moxa equipment connects RTUs, PLCs, meters and protection relays in oil and gas fields, electrical substations, water and wastewater SCADA, transport, and building and energy management systems.
Ordering Moxa products: what we need
Send the complete model including all suffixes (for example EDS-508A-MM-SC-T), the quantity, and for fibre models the fibre type and distance. For gateways, tell us which two protocols need to be linked.
Facts checked against Moxa company information, October 2026.
Browse MOXA products by category: Industrial Communications.
Related products
Frequently Asked Questions
What is the Moxa MGate MB3480?
Moxa lists it as: 4-port standard Modbus gateway. A four-port standard Modbus gateway that converts four serial lines to Modbus TCP, with each port independently configurable as RS-232, RS-422 or RS-485.
What power supply does the MGate MB3480 need?
The Moxa specification gives an input voltage of 12 to 48 VDC. Check the terminal arrangement and, where relevant, the redundant-input wiring against your panel supply before ordering.
What operating temperature range applies to the MGate MB3480?
The listed operating temperature is 0 to 55°C (32 to 131°F). Wide-temperature versions carry a -T suffix in Moxa's order codes where the series offers them, and they are separate order codes.
Which protocols does the MGate MB3480 convert?
Per Moxa's description, it is a 4-port standard Modbus gateway. Industrial protocols listed on the Ethernet side: Modbus TCP Client (Master); Modbus TCP Server (Slave).
Where is the MGate MB3480 datasheet and how do I ask for a quotation?
You can download the Moxa datasheet from this page. For a quotation, send us the full order code, quantity and destination; Seven Star LLC is an independent supplier based in Muscat.
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