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Angled view of the Mitsubishi RX321-1 remote I/O add-on PCB with its connectors and ribbon cable
In stock

• Testing Video Provided

$330.00 USD
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All parts are covered by REACO CNC warranty

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More than 150,000 parts in stock & ready for delivery

More than 100,000 parts in stock & ready for delivery

Order a Mitsubishi RX321-1 remote I/O add-on PCB from REACO CNC. The pictured board carries the RX321C-1 and BN638A489G51A markings. Send photos of your original PCB and remote I/O unit nameplate so we can check fitment and quote a replacement.

Mitsubishi RX321-1 Product Information

Brand Mitsubishi Electric
Model RX321-1
Markings on Pictured PCB RX321C-1, BN638A489G51A, a separate A label, and Made in Japan
Reverse-Side Marking BN638A489H01
Category Remote I/O add-on PCB
Parameter Description 32 digital inputs (sink/source) and 16 sinking digital outputs on the RX321-1 add-on board.
Condition Contact us for available condition and photos of the unit offered.
Handling Time Normally 1–2 business days after payment for confirmed stock.
Shipping Worldwide via DHL, UPS, or FedEx.
Estimated Delivery Time Quoted by destination and courier service.
Warranty New or refurbished units carry a 12-month warranty. Used units carry a 3-month warranty.
Service Test video before dispatch and free technical support.
Packing Antistatic protection, cushioning, and reinforced outer packaging.

Source-Checked Details

Mitsubishi lists the RX321-1 add-on board alongside the RX311 base board in the FCUA-DX110 remote I/O unit. The assembled unit provides 64 digital inputs and 48 sinking digital outputs. See section 2.2 of the Mitsubishi MELDAS 600 Series Connection Manual.

Product Scope

This listing covers the RX321-1 add-on PCB. The pictured board has two gray latching connectors and a short ribbon cable. Your quotation will specify the supplied board and whether the ribbon cable is included.

Fitment Confirmation

Send photos of both sides of your original PCB, a close-up of the full board number and letter label, and the remote I/O unit nameplate. Include the -1 suffix so we can compare the exact model and connector layout before you order.

Request Price and Availability

Send your required quantity and delivery country for pricing, available condition, dispatch timing, and courier options. We will share a test video before dispatch.

Browse Related Mitsubishi Components

View the complete Mitsubishi FCUA-DX110 remote I/O unit or browse our Mitsubishi PCB collection.

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