Allen-Bradley 1746-A7 SLC 500

Allen-Bradley 1746-A7 7-slot SLC 500 chassis (slot 0 holds the processor. NJT Automation sources the 1746-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 1746-A7 SLC 500 modular chassis – front view

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Part Number	1746-A7
Price	On Request Availability and condition determine final quote.
Description	SLC 500 modular 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 1746-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

1746-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

SLC 500 modular chassis

1746A7

7-slot SLC 500 chassis (slot 0 holds the processor; power supply mounts on the left).

1746: BulletinSLC 500 I/O bulletin: chassis, power supplies and I/O modules for the SLC 500 modular system (processors are bulletin 1747).
A: Product typeModular chassis (rack).
7: Slot count7 slots, including slot 0 for the processor.

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 DimensionsEst. weight7.01 lb (3.18 kg)H × W × D6.7 × 14.4 × 5.7 in. (171 × 366 × 145 mm)

Estimated Weight	3.18 kg (7.01 lb) Estimated from the product dimensions and typical density for this product type
Dimensions (H × W × D)	171 × 366 × 145 mm (6.7 × 14.4 × 5.7 in.) 7-slot chassis; width includes the power supply
Shipping Weight	5.60 kg (12.3 lb) Estimated: unit weight plus box and packing material; bills as 13 lb
Shipping Box (L × W × H)	24 × 20 × 14 in. (610 × 508 × 356 mm) Smallest standard box fitting the product with 4 in. cushioning per side

Product dimensions are typical manufacturer-published values and may differ by series or option. Unit weight is an estimate; no published figure is available for this catalog number. 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.

Allen Bradley Information

Lifecycle: Active. Verify current status with the manufacturer.

Alternate Part Numbers

1746A7

Can the 1746-A7 be repaired?

Yes. NJT Automation offers mail-in repair for the 1746-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 1746-A7 failures

Failure patterns we regularly see on SLC 500 modular chassis hardware like the 1746-A7:

Bent or broken backplane pins in a slot after repeated module swaps
Dead or intermittent slot while the rest of the rack works
Corroded backplane contacts in high-humidity enclosures
Power supply connector damage on the left side of the chassis

Repair or replace?

ReplaceA SLC 500 modular chassis has no electronics to fail. Replace the 1746-A7 when it has bent backplane pins, cracked connectors, or a damaged frame. The 1746-A7 is not shelf stock, so sourcing time is part of the repair-or-replace decision.

RepairRepair is rarely economical on the 1746-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 1746-A7?

The Allen-Bradley 1746-A7 is a 7-slot SLC 500 chassis (slot 0 holds the processor; power supply mounts on the left).

What condition is the 1746-A7 in?

The 1746-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 1746-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 1746-A7 SLC 500 modular 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 1746-A7 has been sourced and is ready, free local pickup is available at NJT Automation, 2122 N Prospect Ave, Milwaukee, WI, during business hours.