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Async RS-232/422/485 Extender over Fiber - Terminal Block to Single-Mode SC

Convert RS-232/422/485 data for long extensions over fiber in heavy industrial areas.


18 In Stock
Same Day Shipping (before 5PM ET)
Extended Double Diamond™ Warranty Available (3 Additional Year)

*Required field

Product Features

  • A heavy-duty, industrial-strength serial-to-fiber converter
  • Converts serial signals for single mode fiber transmission up to 15 kilometers (9.3 mi.)
  • Rugged, IP30-rated metal case for panel mounting.
  • Tolerates temperatures ranging from -30 to +185º F (-40 to +85º C).
  • Designed to withstand both shock and vibration
  • Boasts 2-kV triple isolation for safeguarding data and equipment
  • Supports fiber ring communications with 31 other units


  • Tolerates temperatures ranging from -30 to +185º F (-40 to +85º C).
  • Designed to withstand both shock and vibration.
  • Boasts 2-kV triple isolation for safeguarding data and equipment.
  • Supports fiber ring communications with 31 other units.
  • Data rates up to 115.2 kbps.
  • DIN rail mountable with optional adapter.

    Our premium Industrial Opto-Isolated Serial to Fiber Single-Mode SC Converter is the ideal choice if you need reliable, extra-long serial data extensions in heavy-industry areas.

    Meets stringent IEC and IEEE specs.
    Encased in an IP30-rated enclosure, the converter's been put through some of the most exacting tests in the industry. The high-grade converter meets the requirements of two standards that make it suitable for electrical substation installations—IEC 61850-3 and IEEE 1613—specifications that are more stringent than NEMA TS1/TS2 requirements for transportation applications.

    Plus, as a fiber-based conversion and extension device, it's inherently immune to electromagnetic and radio-frequency interference (EMI/RFI) as it uses the optical cable to extend RS-232, RS-422, and RS-485 serial data as far as 15 kilometers (9.3 mi.).

    Three levels of isolation.
    The Industrial Opto-Isolated Serial to Fiber Single-Mode SC Converter provides powerful isolation. Featuring 2-kV triple isolation, the device protects equipment as well as data from damaging surges and ground loops. With isolation on the converter's power supply circuits, you're given a third degree of protection for your expensive components.

    This level of protection helps prevent rogue currents from disrupting important data communications, such as those in factory, engineering, military, defense industry, or utility applications.

    By isolating voltage anomalies, you stand a much better chance of preventing a surge from shutting down an assembly line—or your entire plant.

    Use in point-to-point or multipoint applications.
    You'll need two units for a standard point-to-point application. But you can also easily set up a multidrop configuration so one serial device talks to multiple slave devices around a fiber ring.

    Used in a fiber ring type of application, one Industrial Opto-Isolated Serial to Fiber Single-Mode SC Converter can communicate with up to 31 other converters in a ring.

    The converter has a removal terminal block for both RS-422/RS-485 and power connections, and it supports serial Modbus® connections for both ASCII or RTU (remote terminal unit) formats.

    Simple to configure and set up.
    DIP switches enable you to configure the converter for multidrop or point-to-point operation, and a serial mode switch enables you to choose RS-232 or RS-422/RS-485 modes.

    For additional ease of setup, bit-wise enabled circuitry detects the data rate automatically without you having to set a DIP switch. An automatic send data control feature enables an RS-485 serial port to be used in Windows® applications where you have no control over the handshake lines.

    In addition, the Industrial Opto-Isolated Serial to Fiber Single-Mode SC Converter has built-in switchable bias resistors (1.2 kilohm) on transmit and receive ports, as well as switchable termination (120 ohm).

  • Tech Specs

    Approvals IEC 61850-3, IEEE 1613
    CE Approval Yes
    Connectors RS-232/RS-422/RS-485: 5-postion, removable terminal block; Fiber optic: (1) pair of SC
    Data Rate 9.6-115.2 kbps
    Distance (Maximum) 15 km (9.3 mi.)
    Enclosure IP30 rated metal, panelmount
    Fiber Technology Wavelength: Single-mode 1310 nm; Output power: Minimum: -15; Maximum: -8; Fiber light: Modulated
    Indicators LEDs: (1) Power, (1) TD (transmit data) on fiber, (1) RD (receive data) on fiber, (1) TD (transmit data) on copper, (1) RD (receive data) on copper
    Operating Environment Temperature: -30 to +185° F (-34 to +85° C); Humidity: 0 to 95%, noncondensing
    Power From an external power supply (not included*); Input: 10-48 VDC (56 VDC maximum) on 2-position, removable terminal block; Consumption: 0.9 W typical (2.6 W with termination)
    RoHS Yes
    Size 1.3"H x 3.7"W x 5.2"D (3.3 x 9.4 x 13.2 cm)
    Weight 0.5 lb. (0.2 kg) * See our PS1003 power supply, available separately.
    This product works with:
    Power supply not included. Must be ordered separately.

    * Technical specification weight is the unit weight. It is not the packaged shipping weight. For shipping weight, please contact Black Box customer service at 877-877-2269.


    Double Diamond Warranty

    Extended 1 Year Warranty Available

    Protect your purchase with an additional 1 Year Double Diamond™ warranty!
    Cost: $60.06

    Extended 3 Year Warranty Available

    Protect your purchase with an additional 3 Year Double Diamond™ warranty!
    Cost: $120.12


    Double Diamond™ Warranty (Standard)

    Take the risk out of equipment purchases with the Double Diamond™ Warranty from Black Box Network Services.

    The Double Diamond Warranty is our warranty that protects your Black Box® brand products* from accidental damage, including drops, water, and power surges.

    The Async RS232/422/485 Extender over Fiber, Terminal Block to SM SC comes with a standard 5 Year Double Diamond™ Warranty (Standard) already included.

    During the warranty period, Black Box Network Services will repair or replace your damaged equipment within one week of receipt at NO CHARGE!*

    Plus, get an Extended Double Diamond Warranty.

    You can also extend your warranty or protect a previously purchased Black Box® brand product** for an additional year—for only 10% of the purchase price! Or, extend your coverage for a full three years for only 20% of the purchase price!

    Ordering an extended warranty is easy: When viewing a product in your shopping cart, just select the one or three years of additional coverage in the dropdown menu under “Warranty Options.” For details, contact Customer Service at 724-746-5500.

    * Warranty subject to certain exclusions and limitations ** Certain products may not be eligible.

    What’s more, we also have a 45-day return policy. Simply call Customer Service for a Return Authorization (RA) number, return your product in new condition and in the original package, and receive a full refund.