Allen-Bradley 1756-OB32 ControlLogix Digital Output Module 32-point

Allen-Bradley 1756-OB32 ControlLogix digital output module, 32-point 12/24V DC (10…31.2V DC) sourcing outputs. NJT Automation sources the 1756-OB32 on request; send the part number for a replacement or repair quote.

Quote required. Request a quote below for pricing and delivery.

Allen-Bradley 1756-OB32 ControlLogix digital output module, 32-point, 12/24V DC – front view

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Part Number	1756-OB32
Price	On Request Previously sold for $299.99 - $399.99 USDAvailability and condition determine final quote.
Description	ControlLogix digital output module, 32-point, 12/24V DC.
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 ($60.00) 3 years +25% of product price ($100.00) View full warranty policy
Returns	90-day free returns. View return policy
Exchange	Send us your defective 1756-OB32 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

1756-OB32 Mail-In Repair Service

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

Part Number Decoder

ControlLogix digital output module

1756OB32

32-point 12/24V DC (10…31.2V DC) sourcing outputs.

1756: BulletinControlLogix: Rockwell Automation's chassis-based control platform (controllers, I/O, communication modules, power supplies and chassis).
O: Module typeOutput module (O).
B: Voltage / signal type12/24V DC (10…31.2V DC) sourcing outputs.
32: Point count32 points.

Decoded from the Rockwell Automation catalog-number structure. Series and firmware revision are printed on the product label, not encoded here.

Physical Data

Weight and DimensionsWeight0.66 lb (0.30 kg)H × W × D5.7 × 1.4 × 5.7 in. (145 × 35 × 145 mm)

Weight	0.30 kg (0.66 lb) Typical unit weight
Dimensions (H × W × D)	145 × 35 × 145 mm (5.7 × 1.4 × 5.7 in.) Single-slot module
Shipping Weight	0.83 kg (1.82 lb) Estimated: unit weight plus box and packing material; bills as 2 lb
Shipping Box (L × W × H)	12 × 12 × 8 in. (305 × 305 × 203 mm) Smallest standard box fitting the product with 3 in. cushioning per side

Product weight and dimensions are typical manufacturer-published values and may differ by series or option. Shipping box and weight are estimates for freight planning; the packed unit may ship in a different box.

Datasheet

Datasheet available for download

Generated from product specifications; not an official Allen-Bradley datasheet. For an official datasheet, contact Allen-Bradley or an authorized distributor.

Similar Part Numbers

1756-IB32 Module type: Input module (I)

Alternate Part Numbers

1756OB32, 1756 0B32

Previously sold 1756-OB32

2 sold

NJT Automation has supplied and shipped 2 1756-OB32 ControlLogix digital output modules in 2024; request a quote and we will source another from our supplier network.

Sold: 2 in 2024
Price range: $300 – $400
Series: A × 2

1756-OB32 ControlLogix digital output modules have sold for $300 – $400.

Sold

Allen-Bradley 1756-OB32 / 1756-0B32 Ser A DC Output Module

$399.99 USD

Used

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Sold

Allen Bradley 1756-OB32 / 1756OB32 Ser A ControlLogix 32 Pt 12/24V DC D/O Module

$299.99 USD

Unused surplus (new old stock)

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Can the 1756-OB32 be repaired?

Yes. NJT Automation offers mail-in repair for the 1756-OB32, 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 PLC repair specialiston RepairMode.com ↗

Common 1756-OB32 failures

Failure patterns we regularly see on ControlLogix digital output module hardware like the 1756-OB32:

Group of outputs dead when the field power / common for that group has been lost
Output points weak or leaking: driving a load that chatters
Removable terminal block pins bent or corroded, causing intermittent points
Module fault (I/O LED red) after a chassis power event
Output transistor / triac shorted ON after a field short or inductive kick: the point cannot be turned off

Repair or replace?

ReplaceI/O cards like the ControlLogix digital output module are the easiest modules to swap: same slot, same wiring, no setup. Replace the 1756-OB32 when a channel is dead and the machine needs to run now. Order the exact 1756-OB32. The catalog number sets the 32-point density and 12/24V DC rating, and a different suffix changes one of them. The 1756-OB32 is not shelf stock, so sourcing time is part of the repair-or-replace decision.

RepairA single blown point on the 1756-OB32 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. The two 1756-OB32 symptoms we see most often are “Output transistor / triac shorted ON” and “Electronic fuse tripped (E-suffix modules) or point dead”. Repaired 1756-OB32 units are function-tested before return and carry a 1-year warranty.

Request a Repair Quote

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

Start Your Repair Today

Related services:PLC Repair 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 is the 1756-OB32?

The Allen-Bradley 1756-OB32 is a ControlLogix digital output module: 32-point 12/24V DC (10…31.2V DC) sourcing outputs.

What condition is the 1756-OB32 in?

The 1756-OB32 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 1756-OB32 cost?

At NJT Automation, 2 1756-OB32 ControlLogix digital output modules have sold in 2024 for $300 – $400. None are in stock at the moment; request a quote for current pricing.

When does this part ship?

This 1756-OB32 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 1756-OB32 ControlLogix digital output module. 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 1756-OB32 has been sourced and is ready, free local pickup is available at NJT Automation, 2122 N Prospect Ave, Milwaukee, WI, during business hours.

How many I/O points does the 1756-OB32 have?

32 points.