The MT-5204 4‑port hub provides isolated RS‑485 communication with surge protection for harsh electromagnetic environments.
The MT-5204 4‑port hub is designed for complex electromagnetic environments and large RS‑485 systems. It supports transmission speeds up to 115.2 Kbps, uses optical isolation with 2500 V isolation voltage, and includes 600 W surge‑protect circuits to suppress lightning and ESD.
The device offers a star‑topology RS‑485 bus, short‑circuit and open‑circuit protection on each port, and is suitable for outdoor power‑collection applications. It operates from a +9 V to +30 V DC supply and can be mounted with or without a rail base. This manual is written in Chinese.
| Dimensions (without rail) | 120 mm × 77 mm × 23 mm |
|---|---|
| Dimensions (with rail) | 120 mm × 77 mm × 40 mm |
| Operating temperature | -25 °C to +70 °C |
| Operating humidity | 5 % to 95 % (no condensation) |
| Maximum altitude | ≤ 3000 m |
| Interface compatibility | RS‑232C, RS‑485 (EIA/TIA standard) |
| Electrical interface | Two sides, each 10‑pin pluggable terminal |
| Transmission medium | Twisted pair or shielded cable |
| Operation mode | Asynchronous half‑duplex |
| Power supply | +9 V to +30 V DC, 150 mA |
| Signal indicators | 7 LEDs (PWR, TXD, RXD, E1‑E4) |
| Isolation voltage | 2500 V |
| Transmission speed | 300 bps to 115.2 Kbps |
| Protection level | RS‑232 ±15 kV ESD, RS‑485 each line 600 W surge |
| Maximum transmission distance | 0 – 5 km (115.2 Kbps – 300 bps) |
The hub provides an isolation voltage of 2500 V.
The device operates from –25 °C to +70 °C.
It supports speeds up to 115.2 Kbps.