Advantech BB-485DRCI-PH

Heavy Industrial RS-232 to RS-422/485 Isolated Converter

  • IEEE-61850-3, IEEE-1613
  • NEMA TS2
  • -40 to 85°C Operating Temperature
  • Rugged IP30 Metal Panel Mount Case
  • 50G Shock, 4G Vibration
  • 2kV Triple Isolation
  • 10 to 48 VDC Input Power


Model BB-485DRCI-PH is our premium heavy industrial RS-232 to RS- 422/485 isolated converter. Designed for rugged industrial environments, it has been put through some of the most exacting compliance tests in the industry. Meeting the requirements of IEC 61850-3 and IEEE 1613, it is suitable for installation in electrical substations. These specifications are more stringent than the NEMA TS1/TS2 requirements for transportation applications. Powerful isolation on both data ports protects your equipment and data from damaging ground loops and surges. Additional isolation on the power supply circuits adds a third degree of protection.

Packaged in a rugged IP30 metal case, it converts unbalanced, full or half-duplex RS-232 signals to balanced RS-422/485 signals. Featuring Automatic Send Data Control circuitry, it does not require special software control of handshake signals in RS-485 mode.

Part Number RS-232 Connector
BB-485DRCI-PH Heavy Industrial RS-232 to RS-422/485 Isolated Converter
Serial Technology
RS-232 TD, RD, GND
RS-422 TDA(-), TDB(+), RDA(-), RDB(+)
RS-485 4-Wire TDA(-), TDB(+), RDA(-), RDB(+)
RS-485 2-Wire Data A(-), Data B(+)
RS-232 Connector DB9 Female (DCE)
RS-422/485 Connector 5 position, removable terminal block
Data Rate 1.2 to 115.2 Kbps
Isolation 2 KV RMS, 1 minute
Surge Protection 600W peak power dissipation.
Clamping time <1 picosecond
Industrial Bus Modbus ASCII/RTU
Bias Built-in, switchable 1.2KΩ XMT/RCV
Termination Built-in, switchable 120Ω
Source External
Power Connector 2 position removable terminal block
Input Voltage 10 to 48 VDC (56 VDC Maximum)
Power Consumption 0.5 W typical (1.9 W with termination)
Terminal Blocks
Wire Size Accepted 28 to 12 AWG, copper wire only
Pitch 5.08 mm
Insulation Resistance ≥500 MΩ @ 500 VDC
Maximum Torque 5 Kg / cm
Power Red LED
TD / RD (Each Port) Green LED
Dimensions 5.2 x 3.7 x 1.3 in
132.4 x 92.9 x 33.0 mm
Enclosure IP30 Metal, Panel Mount
Weight 0.46 lbs (208.65 grams)
MTBF 163611 Hours
MTBF Calc. Method Parts Count Reliability Prediction
Operating Temperature -40 to 85°C (-40 to 176°F)
Storage Temperature -40 to 85°C (-40 to 176°F)
Operating Humidity 0 to 95% Non-condensing
Approvals FCC, CE, IEC 61850-3, IEEE 1613
UL C1 D2, File: E245458, NEMA TS2

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