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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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Allen-Bradley 1785-L40B PLC-5 Processor Module 5V DC Surplus Original Packaging - Opened

$5,900.00 USD

Sale Sold out

ConditionSurplus Original Packaging – Opened MPN1785-L40B Stock #0526-02606

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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The Allen-Bradley 1785-L40B is a PLC-5/40 Processor Module from Rockwell Automation, part of the legacy PLC-5 family widely used in industrial automation and machine control applications. The catalog number 1785-L40B carries Series A designation with Firmware Rev. N as shown on the nameplate. The module features 48K word SRAM, supports up to 2048 analog I/O points, and provides four DH+ and Remote I/O channels. Backplane requirements are rated at 3.3A at 5VDC. EEPROM program backup is supported. The part number on the nameplate reads 96166473 AB1. The unit was manufactured in the USA and bears a barcode label reading ST0FP8YU. A Panasonic lithium battery (BR-A, 3V) is included alongside the module in the foam-lined shipping insert. The module is sealed in its original antistatic bag with two intact Rockwell Automation orange ATTENTION static-sensitive handling seals. The seals reference SUPR 9.25 March 1999, superseding SUP-1142. No outer OEM box is present. The 1785-L40B is discontinued by the manufacturer and is sought after as a direct spare and replacement unit for existing PLC-5/40 installations.

Stock # 0526-02606

Please Note: This unit is surplus inventory, sold as-is from MRO Exchange surplus stock. Allen-Bradley is a trademark of Rockwell Automation, Inc. MRO Exchange is an independent reseller and is not an authorized distributor of Rockwell Automation. Product may differ from units available through authorized distributors in date code, country of origin, packaging, accessories, or firmware revision. The warranty from the manufacturer does not apply.

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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.