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Industrial RS-232 to RS-485/422 Converter  

Designed and tested to meet heavy industrial EMC standards and temperature extremes.


1 YEAR DoubleDiamond™ Warranty (Standard)

Product Highlights

  • Features 10–30-VDC operation and withstands temperature extremes of -40 to +176° F (-40 to +80° C).
  • Designed to protect expensive control equipment.
  • Three-way isolation, 1000-V input/output.
  • Features 2k-V isolation with ESD protection.

  • Further Details

  • UL® approved.
  • 8-kV contact; 15-kV air.
  • Built-in switchable bias and termination.
  • Converts unbalanced half- or full-duplex RS-232 signals to balanced full-duplex RS-422 or 2-wire half- or 4-wire full-duplex RS-485.
  • Rugged IP30-rated metal case.
  • Supports wide range of data rates.
  • Includes mounting ears for attaching to a panel.
  • Can also be conveniently mounted on a DIN rail with optional clip (DR100).

  • Operating Environment Temperature: -40 to +176° F (-40 to +80° C);
    Humidity: Up to 95%, noncondensing
    Operation RS-232: Half- or full-duplex;
    RS-422: Full-duplex;
    RS-485: 2-wire half-duplex or 4-wire full-duplex
    Speed 460.8 kbps
    CE Approval Yes
    Connectors (1) 5-position terminal block (RS-422/485), (1) DB9 F (RS-232 DCE), (1) 2-position terminal block (power)
    Power +10 to 30 VDC from an external power supply (if needed, please contact Black Box Tech Support)
    Size 3.9"H x 2.9"W x 0.9"D (9.9 x 2.3 x 7.4 cm)

    This product works with our:
    • DIN Rail, 1-m (3.2-ft.) (DR100).
    To mount the converter to the DIN rail itself, you will need our mounting clip (DRCLIP), available by special order by contacting Black Box Tech Support.

    NOTE: Technical specification weight is the unit weight. It is not the packaged shipping weight. For shipping weight, please contact Black Box customer service at 1-800-316-7107.

    Quick Start Guides

    • Industrial RS-232 to RS-485/422 Converter Quick Start Guide
      Quick Start Guide for the ICD400A (Version 1)

    Product Data Sheets

    Black Box Explains

    Double Diamond Warranty
    1 YEAR DoubleDiamond™ Warranty (Standard)

    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 Industrial RS-232 to RS-485/422 Converter comes with a standard 1 Year warranty 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.

    Product SKU Price Quantity
    RS-232 to RS-422/RS-485 DIN Rail Converter with Opto-Isolation ICD100A $196.90
    You can find this product in the following subcategory(s)

    Add to Cart

    Price: $173.70

    Quantity Available: 4




    Shipping Info

    In Stock - orders received before 5PM ET ship same day

    Weight: 0.536 lbs.
    HxWxD: 2 x 5.5 x 6 in.

    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.

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