Allen-Bradley 1756-PB72 ControlLogix – Ready to Ship / Pick Up

Q: What condition is the 1756-PB72 in?

The 1756-PB72 is available in Unused surplus (new old stock) condition. Typically unused surplus or new/open-box stock. Packaging may be opened or replaced, but the module itself has no meaningful run time.

In stock: 1756-PB72 ControlLogix power supply, 24V DC input (18…32V DC) chassis power supply: standard supply, 10 A at 5.1V DC (series A/B chassis). NJT Automation has 1 unit available in Milwaukee, WI, ready to ship or available for local pickup. Includes a one-year full-function warranty.

Allen-Bradley 1756-PB72 ControlLogix power supply, 24V DC – front view

$699.99USD

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Description	ControlLogix power supply, 24V DC. In stock in unused surplus condition, Series C.
Shipping	Ships today UPS Ground included \| Next-Day Air and Worldwide Shipping available at checkout
Pickup	Free local pickup at 2122 N Prospect Ave. Call ahead at (414) 331-5954.
Warranty	1-year full-function warranty provided by NJT Automation. Warranty details The original Allen-Bradley warranty does not apply to pre-owned units. Full warranty coverage is provided directly by NJT Automation. If you have any issues we can usually swap your unit next-day air (based on inventory)-no waiting weeks for a repair. Included: 1 Year +1 Year: +15% of product price ($105.00) +2 Years: +25% of product price ($175.00) View Full Warranty Policy
Returns	90-day free returns on all purchases. View return policy
Exchange	Send us your defective 1756-PB72 after your purchase for a 10% core credit. We also purchase old or damaged parts outright. Contact NJT

Replacement Options for 1756-PB72

In stock and ready to ship today

Allen-Bradley 1756-PB72 Unused surplus (new old stock) - Buy 1756-PB72 replacement | NJT Automation

Allen-Bradley 1756-PB72 Unused surplus (new old stock) - alternate view

Allen Bradley 1756-PB72 Ser C ControlLogix 24V DC Standard Power Supply 1756PB72

$699.99 USDIn-stock match

Condition: Unused surplus (new old stock)

Series C

1 in stock

View Product

Availability	Similar Match Available A similar unit is in stock and ready to ship once you confirm the condition you need.
Variants	Part NumberConditionSeriesQtyPrice 1756-PB72 /CUnused surplus (new old stock)Series C1$699.99 USD 1756-PB72RefurbishedSeries needed—Request Quote
Repairs	1756-PB72 Mail-In Repair Service
Part Number Decoder	ControlLogix power supply 1756PB72 24V DC input (18…32V DC) chassis power supply: standard supply, 10 A at 5.1V DC (series A/B chassis). 1756 BulletinControlLogix: Rockwell Automation's chassis-based control platform (controllers, I/O, communication modules, power supplies and chassis). P Product typeChassis power supply: mounts on the left side of the ControlLogix chassis and powers the backplane. B Input voltage24V DC input (18…32V DC). 72 Output ratingStandard supply, 10 A at 5.1V DC (series A/B chassis). Decoded from the Rockwell Automation catalog-number structure. Series and firmware revision are printed on the product label, not encoded here.
Allen Bradley Information	Technical Description Allen Bradley ControlLogix Power Supply 1756-PB72, 24-48V DC input, 20A output Lifecycle: Active — verify current status with the manufacturer
Alternate Part Numbers	1756PB72
Category	ControlLogix
Part Number	1756-PB72
Manufacturer	Allen-Bradley

Can the 1756-PB72 be repaired?

Yes. NJT Automation offers mail-in repair for the 1756-PB72, 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
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-PB72 failures

Failure patterns we regularly see on ControlLogix power supply hardware like the 1756-PB72:

Dead rack: no backplane power after an input surge or a failed input section
Chassis-wide resets or module faults from aged output capacitors and 5V ripple
Output voltage sagging under a full chassis load (power supply cannot hold 5.1V)
Power LED flickering or off while input power is present
Thermal shutdown in a hot enclosure with no clearance around the supply
Fuse / input protection damage on AC-input supplies after a lightning event

Repair or replace?

ReplaceA ControlLogix power supply is inexpensive and quick to swap. Replace the 1756-PB72 when its output is dead or cycling. Stick with the exact 1756-PB72. The suffix sets the 24V DC rating, so a near match is a different unit. The 1756-PB72 is on our shelf now and ships the same day for orders placed before 5:00 PM Central.

RepairRepair the 1756-PB72 when a matching supply is hard to source: aged electrolytic capacitors are the usual fault, and a re-capped supply is load-tested before it goes back. Most 1756-PB72 units reach our bench with one of two symptoms: “Dead rack” or “Chassis-wide resets or module faults”. Each 1756-PB72 we repair goes back function-tested with a 1-year warranty.

Why Choose Our Repair Service?

■ Rush turnaround available, with 24-hour emergency service on some models
■ 1-year full-function warranty, with 2- and 3-year extended options
■ No evaluation or diagnostic charges
■ Free UPS shipping label available
■ "Unrepairable" is not an option
■ Thousands of successful Allen-Bradley restorations

Request a Repair Quote

Ready to repair your 1756-PB72? Request a repair quote below. For immediate assistance, text photos of your faulty unit and a description of 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-PB72?

The Allen-Bradley 1756-PB72 is a ControlLogix power supply: 24V DC input (18…32V DC) chassis power supply: standard supply, 10 A at 5.1V DC (series A/B chassis).

What condition is the 1756-PB72 in?

The 1756-PB72 is available in Unused surplus (new old stock) condition. Typically unused surplus or new/open-box stock. Packaging may be opened or replaced, but the module itself has no meaningful run time.

When does this part ship?

We have 1756-PB72 units in stock in Milwaukee, WI. Orders placed before 5:00 PM Central on business days ship the same day; orders placed after the cutoff ship the next business day.

Can you ship this next-day air?

Yes. UPS Next Day Air is available at checkout for the 1756-PB72. 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. Free local pickup is available for in-stock 1756-PB72 units at NJT Automation, 2122 N Prospect Ave, Milwaukee, WI, during business hours. Contact us to arrange a pickup time.

What power input does the 1756-PB72 require?

24V DC input (18…32V DC).

What is the power rating of the 1756-PB72?

Standard supply, 10 A at 5.1V DC (series A/B chassis).

What does the catalog number 1756-PB72 mean?

1756-PB72 breaks down as: 1756 = ControlLogix; P = Chassis power supply; B = 24V DC input (18…32V DC); 72 = Standard supply, 10 A at 5.1V DC (series A/B chassis).

Allen-Bradley 1756-PB72 ControlLogix – Ready to Ship / Pick Up

Replacement Options for 1756-PB72

Similar Match Available

1756-PB72 Mail-In Repair Service

Part Number Decoder

Allen Bradley Information

Alternate Part Numbers