Heavy Industrial Serial to Fibre Optic Converter

  • IEEE-61850-3, IEEE-1613
  • Single Mode, SC Fibre
  • -40 to 85°C Operating Temperature
  • Rugged, IP30 Metal Panel Mount Case
  • 50G Shock, 4G Vibration
  • 2kV Triple Isolation


The BB-FOSTCDRI-PH-SC series are premium heavy industrial serial to fibre optic converters. Designed for rugged industrial environments, they have been put through most exacting compliance testing in the industry. Meeting IEC 61850-3 and IEEE 1613 requirements, they are suitable for installation in electrical substations. These specifications are more stringent than NEMA TS1/TS2 requirements for transportation applications. Powerful isolation protects 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, these units convert serial signals to multi-mode or single-mode fibre optic. Bit-wise enabled circuitry automatically detects the data rate without setting a DIP switch.

In addition to direct point-to-point connectivity, operation in multi-drop mode is possible enabling serial devices to communicate with up to 31 others in a fibre ring. Supporting mixed standards, you can replace other converters and add EMI/RFI protection inherent to fibre optic communications.

Part Number Description
BB-FOSTCDRI-PH-SC Serial to Single-mode SC Converter
Serial Technology
Data Rate 9.6 to 115.2 kbps
Connector Removable terminal block
RS-232 TD, RD, GND
Connector 5-position, removable terminal block
RS-485, 2-wire Data A(-), Data B(+), GND
RS-422/485, 4-wire TDA(-), TDB(+), RDA(-), RDB(+), GND
Bias Built-in, switchable, 1.2KΩ
Termination Built-in, switchable, 120Ω
Rating 2KV RMS, 1 minute
Surge Protection 600 W peak power dissipation
Clamping Time < 1 pico-second
Lines Protected 2-way (input, output lines)
Method Optical
Fibre Optic Technology
Type / Wavelength Multi-mode / 820 nm
Output Power -16dBm min, -12dBm typical, -9dBm maximum
Receive Sensitivity -24dBm min, -25.4dBm maximum
Cable 62.5/125 micro-meter
Connector ST
Data Rate 9.6 to 115.2 kbps
Maximum Distance 4 km (2.5 mi)
Idle Stage Transmitter light ON
Industrial Bus
Source External
Input Voltage 10 to 48 VDC (56 VDC maximum)
Consumption 0.5 W (typical), 1.3W (with termination)
Connector 2-position, removable terminal block, 24 to 14 AWG
Terminal Blocks
Wire Size Accepted 28 to 12 AWG
Pitch 5.08 mm
Insulation Resistance ≥ 500 MΩ @ 500 VDC
Maximum Torque 5 Kg / cm
LED Indicators
Power Red LED
FO Receive Red LED
FO Transmit Red LED
Dimensions 12.3 x 11.3 x 3.2 cm (4.9 x 4.5 x 1.3 in)
Enclosure IP 20 plastic, 35 mm DIN mount
Weight 199.6 g (0.44 lbs)
Operating Temperature -40 to +80 °C (-40 to +176 °F)
Storage Temperature -40 to +85 °C (-40 to +185 °F)
Operating Humidity 0 to 95% non-condensing
MTBF 138904 hours
MTBF Calculator Method Parts Count Reliability Prediction
Approvals / Certifications
UL Class 1 Division 2, Groups A, B, C, D
File Number: E222870 (HAZLOC E245458)
FCC Part 15, CISPR, EN 55022: 2010 + AC:2011 Class B Emissions
EN 61000-6-1: 2007 Generic Standards for Residential, Commercial and Light Industrial Environments
EN 61000-4-2: 2009 Electro-Static Discharge (ESD)
EN 61000-4-3: 2006 +A1 +A2 +IS1 Radiated Field Immunity (RFI)
EN 61000-4-4: 2012 Electrical Fast Transients-Burst Immunity (EFT)
EN 61000-4-6: 2009 Conducted Immunity

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