MOXA MGate MB3270 Industrial Ethernet Gateway
- Model: MGate MB3270
MOXA MGate MB3270 INTRODUCTION
The Moxa MGate MB3270 is a dual-port Modbus TCP gateway
designed to help industries efficiently integrate large numbers of Modbus
RTU/ASCII devices into Ethernet-based control systems. As part of Moxa’s industrial edge connectivity and Modbus TCP gateway lineup, the MGate MB3270
provides two RJ45 Ethernet ports and two RS-232/422/485 serial ports, enabling
flexible wiring and simplified network expansion for applications in factory
automation, energy systems, oil and gas, and water treatment. Its 0 to 60°C operating
temperature, intuitive configuration tools, and stable protocol conversion make
it ideal for engineers who require reliability and ease of deployment in
demanding industrial environments. With its ability to streamline communication
between serial equipment and Ethernet networks, this gateway is a strong option
for upgrading legacy systems, and users can rely on the Moxa MGate MB3270 datasheet for deeper technical details.
As an Authorized Distributor of MOXA, Manufacturers Automation Inc. (ManuAuto) offers a wide variety of Industrial Automation and Communication products across North America, including Canada (Ontario, Toronto) and the US. Buy the MOXA MGate MB3270 Industrial Ethernet Gateway online at a competitive price, with on-time delivery and fast shipping services. Our certified engineers are always available to support you.
You can also find the MGate MB3170-M-SC, MGate MB3270I-T, and MGate MB3270I models in the MOXA MGate MB3170/MB3270 Series.
MOXA MGate MB3270 CERTIFICATIONS
The MGate MB3270 is fully certified for harsh and
safety-critical applications, meeting Safety, EMC, EMI, and EMS standards, as
well as ATEX, Class I Division 2, and IECEx hazardous location requirements. It
also carries DNV-GL maritime approval and withstands freefall, shock, and
vibration, ensuring robust operation in environments ranging from industrial
plants to offshore systems. These certifications confirm that the MGate MB3270
is engineered for long-term, interference-resistant performance wherever dependable
Modbus communication is essential. The Moxa MGate MB3270 manual provides
comprehensive information.

| Industrial Gateway : Interface | |
| 10/100Mb RJ45 (Megabit) Ports | Yes : 2 Ports (1 IP, Ethernet cascade, Auto MDI/MDI-X connection) |
| Magnetic Isolation Protection | 1.5 kV (built-in) |
| Other ports | No |
| Protocols | Ethernet: Modbus TCP Client (Master), Modbus TCP Server (Slave), Serial: Modbus RTU/ASCII Master, Modbus RTU/ASCII Slave |
| Industrial Gateway : Serial port specifications | |
| Console Port | No |
| Number of Ports | 2 Ports |
| Serial Standards | RS-232/422/485 |
| Connectors | 2 x DB9 male |
| Isolation | No |
| Industrial Gateway : Serial Communication Parameters | |
| Data Bits | 7, 8 |
| Stop Bits | 1, 2 |
| Parity | None, Even, Odd, Space, Mark |
| Flow Control | DTR/DSR, RTS Toggle (RS-232 only), RTS/CTS |
| Baudrate | 50 bps to 921.6 kbps |
| Industrial Gateway : Serial Signals | |
| RS-232 Signals | TxD, RxD, RTS, CTS, DTR, DSR, DCD, GND |
| RS-422 Signals | Tx+, Tx-, Rx+, Rx-, GND |
| RS-485-4w Signals | Tx+, Tx-, Rx+, Rx-, GND |
| RS-485-2w Signals | Data+, Data-, GND |
| Industrial Gateway : General | |
| Management | ARP, DHCP Client, DNS, HTTP, HTTPS, SMTP, SNMP Trap, SNMPv1/v2c/v3, TCP/IP, Telnet, UDP, NTP Client |
| MTBF | 1,477,768 hrs |
| Industrial Gateway : Memory | |
| microSD Slot | No |
| Industrial Gateway : Power Requirements | |
| Input Current | 435 mA @ 12 VDC |
| Input Voltage | 12 to 48 VDC (Redundant dual power inputs) |
| Power Connector | 7-pin terminal block |
| Industrial Gateway : Security | |
| Security | Security Protocols: SNMPv3, HTTPS (TLS 1.2) |
| Authentication | Local database |
| Encryption | HTTPS, AES-128, AES-256, SHA-256 |
| Industrial Gateway : Physical Characteristics | |
| Dimensions | with ears: 29 x 89.2 x 124.5 mm (1.14 x 3.51 x 4.90 in), without ears: 29 x 89.2 x 118.5 mm (1.14 x 3.51 x 4.67 in) |
| Standards and Certifications | EMC: EN 55032/35; EMI: CISPR 32, FCC Part 15B Class A; EMS: IEC 61000-4-2 ESD: Contact: 6 kV; Air: 8 kV, IEC 61000-4-3 RS: 80 MHz to 1 GHz: 10 V/m, IEC 61000-4-4 EFT: Power: 4 kV; Signal: 2 kV, IEC 61000-4-5 Surge: Power: 2 kV, IEC 61000-4-6 CS: 10 V, IEC 61000-4-8 PFMF, IEC 61000-4-11; Hazardous Locations: ATEX, Class I Division 2, IECEx; Maritime: DNV; Freefall: IEC 60068-2-32; Shock: IEC 60068-2-27; Vibration: IEC 60068-2-6, IEC 60068-2-64; Safety: UL 60950-1, IEC 60950-1, EN 62368-1, UL 508; IP30; Telcordia SR332 |
| Housing | Plastic |
| Operating Temperature | 0 to 60°C (32 to 140°F) |
| Weight | 380 g (0.84 lb) |
| Storage Temperature | -40 to 85°C (-40 to 185°F) |
| Ambient Relative Humidity | 5 to 95% (non-condensing) |
| Installation | DIN-rail mounting |