The Moxa TCC-82 is a port-powered RS-232 4-channel isolator with 4 kV RMS isolation across TxD, RxD, RTS, and CTS. Auto baudrate detection, DB9 connectors, dual independent power inputs. Optional 5–12 VDC external supply. 0 to 60°C.
The Moxa TCC-82 is a compact, port-powered RS-232 4-channel isolator that provides full electrical isolation for bidirectional serial communication between two RS-232 devices. Unlike a protocol converter, the TCC-82 keeps both sides in RS-232 — it simply isolates them optically to protect against lightning surges, accidental high-voltage shorts, and ground loops. All four active RS-232 lines (TxD, RxD, RTS, CTS) are isolated, with each channel tested to withstand more than 4 kV RMS input-to-output for one minute. This makes the TCC-82 suitable for both general serial data communications and the higher isolation standards required by industrial automation and medical applications.
The TCC-82 uses optical photo couplers to isolate the TxD, RxD, RTS, and CTS signals between the two RS-232 ports. Each channel withstands more than 4 kV RMS for one minute. DTR, DSR, and DCD pins are internally shorted on both sides. If the full 4 kV isolation is required and external power is used on both sides, separate power sources are recommended — most commercial supplies provide only 1500 VAC isolation between primary and secondary windings.
Each side draws power independently — primarily from the RS-232 port (TxD, RTS, DTR lines) or optionally from a 5–12 VDC external supply at 20 mA max per side. Operating temperature is 0 to 60°C. Storage temperature is -20 to 75°C. Plastic housing, IP30, weighs 60 g.
UL 60950-1, EN 55032/35, CISPR 32, FCC Part 15B Class B, CE. MTBF: 959,780 hours (MIL-HDBK-217F).
| Category | Specification | Value |
|---|---|---|
| Serial Interface | No. of Ports | 2 |
| Serial Interface | Connector | DB9 male + DB9 female |
| Serial Interface | Standards | RS-232 |
| Serial Interface | Baudrate | 50 bps to 921.6 kbps (incl. non-standard) |
| Serial Interface | Isolated Channels | 4 (TxD, RxD, RTS, CTS) |
| Serial Interface | Isolation | 4 kV RMS (1 min, optical) |
| Serial Signals | RS-232 | TxD, RxD, RTS, CTS, GND (DTR/DSR/DCD internally shorted) |
| Power | Primary Source | Port-powered from RS-232 TxD, RTS, DTR (each side independent) |
| Power | External Input Voltage | 5 to 12 VDC (optional) |
| Power | External Input Current | 20 mA (max) per side |
| Power | No. of Power Inputs | 2 (one per side) |
| Power | Overload Protection | Yes |
| Physical | Housing | Plastic, IP30 |
| Physical | Dimensions | 42 x 80 x 23.6 mm |
| Physical | Weight | 60 g |
| Physical | Installation | Desktop |
| Environmental | Operating Temperature | 0 to 60°C (32 to 140°F) |
| Environmental | Storage Temperature | -20 to 75°C |
| Environmental | Ambient Relative Humidity | 5 to 95% (non-condensing) |
| Certifications | Safety | UL 60950-1 |
| Certifications | EMC | EN 55032/35, CISPR 32, FCC Part 15B Class B |
| MTBF | Time | 959,780 hrs (MIL-HDBK-217F) |
| Warranty | Period | 5 years |
Same day dispatch on all stocked items.
