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Brand: MOXA
Moxa MGate MB3660-8-2AC 8-Port Modbus TCP Gateway, Dual AC
Description
How the MGate MB3660-8-2AC bridges protocols
Moxa describes the MGate MB3660-8-2AC as modbus gateway with dual LANs, dual AC power inputs, 8 RS-232/422/485 ports, 0 to 60°C operating temperature. A Modbus gateway with eight software-selectable RS-232/422/485 DB9 ports, two LAN connections and redundant 100 to 240 VAC inputs for critical-service installations.
On the datasheet side, the power input is Redundant dual inputs; 100 to 240 VAC (47 to 63 Hz); operating temperature is 0 to 60°C (32 to 140°F); dimensions are 480 x 45 x 198 mm (18.90 x 1.77 x 7.80 in); weight is 2731 g (6.02 lb); the enclosure is rated IP30.
Standards and approvals printed for this model include safety standard IEC 62368-1, UL 62368-1, IEC 60950-1, UL 60950-1. Approvals can differ between variants of a series, so check the one on the exact order code.
Technical specifications
| Parameter | Specification |
|---|---|
| Time Management | NTP Client |
| Authentication | Local database; RADIUS |
| Security Protocols | SNMPv3; HTTPS (TLS 1.2) |
| No. of Ports | 8 |
| Connector | DB9 male |
| Baudrate | 50 bps to 921.6 kbps |
| Data Bits | 7, 8 |
| Stop Bits | 1, 2 |
| Parity | None; Even; Odd; Space; Mark |
| Isolation | 2 kV (I models) |
| Pull High/Low Resistor for RS-485 | 1 kilo-ohm, 150 kilo-ohms |
| Terminator for RS-485 | 120 ohms |
| RS-422 | Tx+, Tx-, Rx+, Rx-, GND |
| RS-485-2w | Data+, Data-, GND |
| RS-485-4w | Tx+, Tx-, Rx+, Rx-, GND |
| Modbus RTU/ASCII: Mode | Master, Slave |
| Modbus RTU/ASCII: Functions Supported | 1, 2, 3, 4, 5, 6, 15, 16, 23 |
| Modbus RTU/ASCII: Max. No. of Commands | 256 per serial port |
| Modbus RTU/ASCII: Memory Size | 65535 bytes |
| Modbus TCP: Max. No. of Client Connections | 256 |
| Modbus TCP: Max. No. of Server Connections | 128 |
| Modbus TCP: Functions Supported | 1, 2, 3, 4, 5, 6, 15, 16, 23 |
| Modbus TCP: Max. No. of Commands | 256 |
| Modbus TCP: Memory Size | 65535 bytes |
| Modbus (Transparent): Max. No. of Client Connections | 256 |
| Modbus (Transparent): Max. No. of Server Connections | 128 |
| No. of Power Inputs | 2 |
| Power Connector | Terminal block (for DC models) |
| Power Consumption | 109 mA @ 110 VAC |
| Contact Current Rating | Resistive load: 2 A @ 30 VDC |
| Housing | Metal |
| IP Rating | IP30 |
| Weight | 2731 g (6.02 lb) |
| Operating Temperature | 0 to 60°C (32 to 140°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: 6 kV; Air: 8 kV; IEC 61000-4-3 RS: 80 MHz to 1 GHz: 10 V/m; IEC 61000-4-4 EFT: Power: 1 kV; Signal: 1 kV; IEC 61000-4-5 Surge: Power: 2 … |
| Safety | IEC 62368-1, UL 62368-1, IEC 60950-1, UL 60950-1 |
| Freefall | IEC 60068-2-31 |
| Shock | IEC 60068-2-27 |
| Vibration | IEC 60068-2-6; IEC 60068-2-64 |
| Warranty Period | 5 years |
Selection and installation notes
It targets control-room and SCADA front-end use where a high port count and power redundancy matter, such as pipeline telemetry and utility substations; the dual LAN gives two IP addresses.
On the practical side, the housing is metal; the stated MTBF is 721,988 hrs; the warranty period is 5 years. Treat the MTBF as a manufacturer prediction under its stated method, not a guarantee for your site.
Before ordering, confirm the port count (8 or 16), the AC or DC input version, and the -J or standard variant. Seven Star LLC is an independent supplier in Muscat and quotes against the exact code you give us.
Related models in the MGate MB3660-8-2AC family
The Moxa product list shows these models in the same family page (8 entries): MGate MB3660-16-2AC, MGate MB3660-16-2DC, MGate MB3660-16-J-2AC, MGate MB3660-8-2AC, MGate MB3660-8-2DC, MGate MB3660-8-J-2AC, MGate MB3660I-16-2AC, MGate MB3660I-8-2AC. 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 attached file is Moxa’s published datasheet for the family (moxa-mgate-mb3660-series-datasheet-v2.6). For a quotation, send the full order code, the quantity required and where the goods are to be delivered.
More products in this range: Industrial Communications.
Datasheets & Documents
- Datasheet Moxa MGate MB3660 series datasheet v2.6 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 MB3660-8-2AC?
Moxa lists it as: Modbus gateway with dual LANs, dual AC power inputs, 8 RS-232/422/485 ports, 0 to 60°C operating temperature. A Modbus gateway with eight software-selectable RS-232/422/485 DB9 ports, two LAN connections and redundant 100 to 240 VAC inputs for critical-service installations.
What power supply does the MGate MB3660-8-2AC need?
The Moxa specification gives an input voltage of Redundant dual inputs; 100 to 240 VAC (47 to 63 Hz). 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 MB3660-8-2AC?
The listed operating temperature is 0 to 60°C (32 to 140°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 MB3660-8-2AC convert?
Per Moxa's description, it is a Modbus gateway with dual LANs. Industrial protocols listed on the Ethernet side: Modbus TCP Client (Master); Modbus TCP Server (Slave).
Where is the MGate MB3660-8-2AC datasheet and how do I ask for a quotation?
The official Moxa datasheet is attached to this page. Send Seven Star LLC the exact order code, quantity and delivery location for a quotation; we are an independent supplier in Muscat.
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