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Black Box DB-25 female to terminal block adapter, 3.3 by 2.1 by .7 inches

Black Box Corporation

Black Box DB-25/Terminal Block Adapter

SKU CH-2TBP-S5R4A

Connects a 25-pin DB-25 female RS-232 port to a terminal block for data transfer in a compact 0.7 by 2.1 by 3.3 inch TAA-compliant adapter

  • DB-25 female connector links legacy serial and parallel devices
  • Terminal block second end enables direct wire termination for custom wiring
  • Compact 0.7 in height fits tight panel spaces
  • 1 in width by 3.3 in depth suits standard enclosures
  • TAA compliant and made in the United States for regulated procurements

RS-232 Serial Adapter for Legacy Equipment

This DB-25 to terminal-block adapter connects serial or parallel devices that use a 25-pin interface to modern wiring blocks. It serves technicians maintaining industrial panels, laboratory instruments or older printers that still rely on RS-232 signalling. The female DB-25 end mates directly with the legacy port while the terminal block provides screw-down connections for custom cable assemblies.

Passive Design with Zero Power Draw

The unit contains no active electronics, so it adds no heat, no fan noise and no power consumption to the installation. Its compact 0.7" by 2.1" by 3.3" enclosure fits inside crowded cabinets or junction boxes without blocking adjacent ports. TAA compliance confirms the adapter meets U.S. government procurement standards for country of origin.

Terminal Block Frees Wiring Flexibility

The screw-terminal second end lets installers terminate field wires of varying gauges without soldering or crimping DB-25 pins. This arrangement suits panel-build scenarios where cable runs are cut to length on site. Buyers needing a pre-assembled DB-25 cable or a USB converter will need a different product, as this adapter only bridges the DB-25 connector to bare conductors.

How it compares

Measured against everything we stock in USB Cords & Extension Cables, at today’s prices. Recalculated every night.

Price $81.99
Pricier than about 90% of the 15,227 comparable items (median $14.99).

Specifications

No published specifications for this item yet.

Questions about this item

How do I connect the DB-25 female end to my RS-232 serial or parallel port without damaging the pins?

Align the 25-pin connector carefully with the port, then tighten the thumbscrews evenly to avoid bending pins on the 25-pin DB-25 female interface.

What upkeep does the terminal block side need after repeated wiring changes?

Inspect each terminal block screw for tightness and check for oxidation on the wire contacts after frequent re-terminations.

At what point does the adapter's physical size limit cable routing in a crowded rack?

The 3.3-inch depth and 2.1-inch width restrict routing in tight cable managers, so measure clearance before installing.

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