Allen-Bradley 1756-A7 ControlLogix Chassis

Allen-Bradley 1756-A7 7-slot ControlLogix chassis. NJT Automation sources the 1756-A7 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-A7 ControlLogix chassis – front view

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Part Number	1756-A7
Price	On Request Availability and condition determine final quote.
Description	ControlLogix chassis.
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 3 years +25% of product price View full warranty policy
Returns	90-day free returns. View return policy
Exchange	Send us your defective 1756-A7 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-A7 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 chassis

1756A7

7-slot ControlLogix chassis.

1756: BulletinControlLogix: Rockwell Automation's chassis-based control platform (controllers, I/O, communication modules, power supplies and chassis).
A: Product typeChassis (backplane): holds the power supply plus the controller, I/O and communication modules.
7: Slot count7 module slots (the power supply mounts on the side and does not use a slot).

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 DimensionsWeight2.43 lb (1.10 kg)H × W × D6.7 × 14.5 × 5.7 in. (169 × 367.6 × 145 mm)

Weight	1.10 kg (2.43 lb) Typical unit weight
Dimensions (H × W × D)	169 × 367.6 × 145 mm (6.7 × 14.5 × 5.7 in.) 7-slot chassis; width includes a standard power supply
Shipping Weight	3.03 kg (6.69 lb) Estimated: unit weight plus box and packing material; bills as 7 lb
Shipping Box (L × W × H)	24 × 18 × 12 in. (610 × 457 × 305 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-A10 Slot count: 10 module slots
1756-A13 Slot count: 13 module slots
1756-A4 Slot count: 4 module slots

Alternate Part Numbers

1756A7

Can the 1756-A7 be repaired?

Yes. NJT Automation offers mail-in repair for the 1756-A7, 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-A7 failures

Failure patterns we regularly see on ControlLogix chassis hardware like the 1756-A7:

Bent or broken backplane connector pins in a slot after repeated module insertions
One slot dead or intermittent while the rest of the chassis works
Cracked backplane board from over-torqued mounting hardware
Corroded backplane contacts in washdown or high-humidity enclosures
Power-supply connector damage on the left side of the chassis

Repair or replace?

ReplaceA ControlLogix chassis has no electronics to fail. Replace the 1756-A7 when it has bent backplane pins, cracked connectors, or a damaged frame. We source the 1756-A7 on request, so weigh that lead time against a repair turnaround.

RepairRepair is rarely economical on the 1756-A7; if modules are faulting in one slot, the fault is more often the module or power supply than the chassis, and we can test both.

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-A7?

The Allen-Bradley 1756-A7 is a 7-slot ControlLogix chassis.

What condition is the 1756-A7 in?

The 1756-A7 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.

When does this part ship?

This 1756-A7 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-A7 ControlLogix chassis. 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-A7 has been sourced and is ready, free local pickup is available at NJT Automation, 2122 N Prospect Ave, Milwaukee, WI, during business hours.