Allen-Bradley 1791-16AC – Repair Service Available

Allen-Bradley 1791-16AC B Block I/O Input Output Module 179116AC. NJT Automation offers mail-in repair for the 1791-16AC with a 1-year warranty; replacement pricing is available on request.

Mail-in repair available now. Returned with a 1-year warranty. Replacement pricing on request.

Allen-Bradley 1791-16AC industrial automation module – front view

Allen-Bradley 1791-16AC industrial automation module – front view

Request Replacement Quote Request Repair QuoteEstimated $1,440.00

Part Number	1791-16AC
Price	On Request Previously sold for $599.99 - $799.99 USDAvailability and condition determine final quote.
Description	Allen-Bradley 1791-16AC B Block I/O Input Output Module 179116AC. Block I/O Module, 120V AC, 32 Points, 16 Inputs, 16 Ouputs.
Shipping	UPS Ground included \| Next-Day Air and Worldwide Shipping available at checkout
Warranty	1-year full-function warranty provided by NJT Automation. Warranty details Included 1 year, full-function 2 years +15% of product price ($101.25) 3 years +25% of product price ($168.75) View full warranty policy
Returns	90-day free returns. View return policy
Exchange	Send us your defective 1791-16AC after your purchase for a 10% core credit. We also purchase old or damaged parts outright.

Availability

Available Level 1

This part is available through our Level 1 supplier network. Request a quote to confirm quantity, price, and next-day shipping options.

Inventory Level 1 RFQ

Level 1 parts come from vetted US suppliers we have worked with for years. Each unit is checked before it ships, so counterfeits, repackaged items sold as new, and worn-out equipment do not reach you. Every part carries the same NJT warranty and return policy as our own stock.

Request Quote Learn more about Inventory Levels

Repairs

1791-16AC Mail-In Repair Service

Estimated: $1,440.00

How the Process Works:

Submit Your RFQ: Complete the request-for-quote (RFQ) form with your exact requirements.
Receive a Quote: We respond ASAP - within 1 hour during business hours.
Approve and Pay: Agree to the quoted price, and we will issue an invoice payable via credit card or your preferred method.
Direct Shipping: Our normal shipping time is 3-5 business days, during which we thoroughly inspect and certify items to meet our high standards. If you request next-day air delivery, the item will be sent directly to you and arrive the following business day. Please note: These items are NOT available for local pickup at NJT Automation's location.

What We Offer

We source genuine parts from trusted U.S. channels and stand behind what we sell.

Our network has millions of parts ready to be delivered now.
Complete Transparency: Clear information on item availability.
Well-vetted components from trusted suppliers sourced from the USA.
Technical Support: Assistance, troubleshooting and hardware repairs.
Minimal Markup: The best sourcing service at a minimal cost.
Quick Delivery: Fast access to the parts you need to get your machines back up and running.
Dropship available • No branding on packaging

Physical Data

Weight and DimensionsBox12 × 10 × 8 in.

Shipping Box (L × W × H)	12 × 10 × 8 in. (305 × 254 × 203 mm) Most common box recorded for this catalog number

Shipping box and weight are recorded from previous shipments of this catalog number and are provided for freight planning.

Allen Bradley Information

Technical Description

Block I/O Module, 120V AC, 32 Points, 16 Inputs, 16 Ouputs

Alternate Part Numbers

179116AC

Category

Compactblock

Part Number

1791-16AC

Manufacturer

Allen-Bradley

Previously sold 1791-16AC

4 sold

NJT Automation has supplied and shipped 4 1791-16AC B Block I/O Input Output Module 179116ACs since 2025; request a quote and we will source another from our supplier network.

Sold: 4 since 2025
Price range: $600 – $800, median $675
By condition: Used (4)$600 – $800
Series: B × 4

Used 1791-16AC B Block I/O Input Output Module 179116ACs have sold for $600 – $800, typically around $675.

Allen-Bradley 1791-16AC Used - previously sold by NJT Automation

Allen Bradley 1791-16AC /B Block I/O Remote Module 120VAC 150mA 60Hz 179116AC

$799.99 USD

Used

Allen-Bradley 1791-16AC Used - previously sold by NJT Automation

Allen Bradley 1791-16AC /B Block I/O Remote Module 120VAC 150mA 60Hz 179116AC

$699.99 USD

Used

Allen-Bradley 1791-16AC Used - previously sold by NJT Automation

Allen Bradley 1791-16AC /B Block I/O Module 120V AC 16 Input / 16 Output

$649.99 USD

Used

Allen-Bradley 1791-16AC Used - previously sold by NJT Automation

Allen Bradley 1791-16AC /B Block I/O Input Output Module 179116AC

$599.99 USD

Used

Can the 1791-16AC be repaired?

Yes. NJT Automation offers mail-in repair for the 1791-16AC, including diagnostic evaluation, component-level repair, and functional testing.

NJT Managed Repair

One vendor. One warranty. NJT manages the entire process.

1-year full-function NJT warranty, with 2- and 3-year options available
Rush service available for production-critical repairs
No evaluation or diagnostic charges
No repair, no charge
"Unrepairable" is not an option
Pre-paid UPS shipping label provided for sending your unit in
$650 minimum repair charge, shipping included both ways

Get an NJT Repair Quote

Looking for another option? For lower-cost repairs or if you prefer to work directly with an independent repair specialist, compare bids through RepairMode. RepairMode providers operate independently and set their own pricing and warranty terms.

Find a repair specialiston RepairMode.com ↗

Repair or replace?

ReplaceI/O cards like the B Block I/O Input Output Module 179116AC are the easiest modules to swap: same slot, same wiring, no setup. Replace the 1791-16AC when a channel is dead and the machine needs to run now. The 1791-16AC is not shelf stock, so sourcing time is part of the repair-or-replace decision.

RepairA single blown point on the 1791-16AC is a component-level repair (a driver, input channel or on-board fuse), so repair pays when replacements are scarce or you have several cards with a few bad channels each. Expect estimated $1,440.00 for the 1791-16AC repair, with full-function testing and a 1-year warranty included.

Functional test video

Bench test from a completed 1791-16AC repair.

RepairMode test video for 1791-16AC

Request a Repair Quote

Text photos of the faulty unit and the symptoms to (414) 331-5954.

Start Your Repair Today

Related services:All Repair Services

All product photos were taken by NJT Automation. Test videos originated from either NJT Automation internally or from repair technicians within our network.

Still have questions?

Find answers to shipping, warranties, repairs, and more.

Frequently Asked Questions

What condition is the 1791-16AC in?

The 1791-16AC is available in Unused surplus / Refurbished / Used condition. We can quote this part in unused surplus, refurbished, or used condition depending on availability and your preference. Specify your requirement in the RFQ.

How much does the 1791-16AC cost?

At NJT Automation, 4 1791-16AC B Block I/O Input Output Module 179116ACs have sold since 2025 for $600 – $800, with a median of $675. None are in stock at the moment; request a quote for current pricing, or have your B Block I/O Input Output Module 179116AC repaired for an estimated $1,440.

When does this part ship?

This 1791-16AC is sourced on request, so sourcing and quote timelines apply. Request a quote and we'll confirm availability and lead time. Many parts can be sourced within a few business days through our Level 1 supplier network.

Can you ship this next-day air?

Yes. UPS Next Day Air is available at checkout for the 1791-16AC. Place your order before 5:00 PM Central on a business day and your in-stock item ships the same day for next-business-day delivery.

Can I pick this item up locally?

Yes. Once your 1791-16AC has been sourced and is ready, free local pickup is available at NJT Automation, 2122 N Prospect Ave, Milwaukee, WI, during business hours.

Disclaimer

Trademarks & Compatibility

All trademarks, service marks, trade names, brand names, and logos displayed on this website are the property of their respective owners. Any references to manufacturers, products, or brands are for identification and compatibility purposes only and do not imply any affiliation with, endorsement by, sponsorship from, or authorization by the respective trademark owners.

Independent Supplier

NJT Automation is an independent supplier of surplus, refurbished, and pre-owned industrial automation equipment. Unless expressly stated otherwise, NJT Automation is not an authorized distributor, dealer, representative, or affiliate of the original equipment manufacturer (OEM) for any products offered on this website.

Product Condition & Warranty

Products sold by NJT Automation may be surplus inventory, discontinued models, older series, or units with earlier manufacturing date codes than those currently available from the OEM or its authorized distribution network. As NJT Automation is not an authorized distributor, manufacturer warranties, support programs, and other OEM services may not apply. Any warranty provided is solely that of NJT Automation, where applicable.

Firmware & Software Licensing

Certain programmable logic controllers (PLCs), drives, HMIs, and other electronic products may require firmware to operate. While some products may include firmware, NJT Automation makes no representations or warranties regarding whether firmware is installed, the firmware version or revision level, its compatibility with your application, or its licensing status.

NJT Automation does not provide, obtain, transfer, or license firmware on behalf of customers. We make no representation regarding your ability or legal right to obtain, download, install, or use firmware from the OEM, its authorized distributors, or any other source. It is the customer's sole responsibility to ensure compliance with all applicable End User License Agreements (EULAs), software licenses, intellectual property rights, and other terms governing the acquisition, installation, and use of firmware.