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Most orders ship within 1–2 business days via UPS. Larger equipment ships via freight carrier, and customers can use the shipping estimator on the product page for a location-specific quote. Local pickup is also available at the Fairfield, IL facility, typically ready within 4 hours.

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MRO Exchange accepts all major credit cards, PayPal, and Shop Pay. Purchase order and wire transfer payment is also available, with payment due prior to shipment. Custom terms are available for established accounts.

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Fanuc A20B-1003-0240 I/O Connection Board

$399.00 USD

Sale Sold out

ConditionSurplus - Untested MPNA20B-1003-0240 Stock #0326-00820

Photos reflect current condition. Items differing from description may be eligible for return or refund — see our condition guide.

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Estimated package weight: 10.0 lbs

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Used in Fanuc Series 15A CNC control systems, the A20B-1003-0240 is the I/O Connection Unit 2 board responsible for routing discrete input and output signals between the CNC controller and machine peripherals. The board supports 96 inputs and 64 outputs, accommodating the high I/O density required by large-format machining centers and transfer lines running under Fanuc 15A control. Five external connector modules labeled CO1 through CO5 are attached to the front edge of the board, each carrying multi-conductor cables that interface with field devices such as limit switches, solenoids, and auxiliary relays. The PCB silkscreen reads A20B-1003-0240 / 08B, with revision suffix 08B indicating a later revision of the base part number A20B-1003-0240. Manufactured in Japan by Fanuc, the board carries the Fanuc logo and country of origin marking directly on the PCB surface. The reverse side silkscreen shows A950-1003-T244704, a Fanuc internal board assembly reference. The board is a full-length rack-mount card constructed on a green substrate with a gold-plated edge frame, populated with a mix of through-hole and surface-mount components including Fanuc-branded ICs, film capacitors, and passive components. A heat sink assembly is present on the right side of the component face. This part number is compatible with Fanuc 15A, 15-MA, 15-TA, 15-TF, and related control variants requiring a second I/O connection unit.

Stock # 0326-820

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Frequently Asked Questions

Shipping & Handling

Most orders ship within 1–2 business days via UPS, but expedited same-day handling is available as an add-on to orders in cart. Larger equipment ships via freight carrier. Use the shipping estimator above for a location-specific quote. Local pickup is also available at our Fairfield, IL facility, typically ready within 4 hours.

Returns & Condition

All items are sold as-described based on the photos and condition listed. If an item arrives differing from its description, it may be eligible for return or refund. See our full condition guide for details on our grading terms.

Payment Options

We accept all major credit cards, PayPal, and Shop Pay. Purchase order and wire transfer payment is also available by selecting "Purchase Order / Wire Transfer" at checkout. Payment is due prior to shipment. Contact us for custom terms on established accounts. Tax exemptions are honored if proper documentation is provided.