Allen-Bradley 1756-A4 ControlLogix Chassis – Ready to Ship / Pick Up
In stock: The 1756-A4 is a 4-slot ControlLogix 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.
$349.99USD
| Description | ControlLogix chassis. In stock in used condition. |
| 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 detailsThe 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 ($52.50) +2 Years: +25% of product price ($87.50) |
| Returns | 90-day free returns on all purchases.View return policy |
| Exchange | Send us your defective 1756-A4 after your purchase for a 10% core credit. We also purchase old or damaged parts outright. |
Replacement Options for 1756-A4
In stock and ready to ship today
| Availability | Similar Match AvailableA similar unit is in stock and ready to ship once you confirm the condition you need. |
| Variants | Part NumberConditionSeriesQtyPrice 1756-A4Used—1$349.99 USD |
| Repairs | 1756-A4 Mail-In Repair Service |
Part Number Decoder | ControlLogix chassis 1756A4 4-slot ControlLogix chassis.
Decoded from the Rockwell Automation catalog-number structure. Series and firmware revision are printed on the product label, not encoded here. |
Similar Part Numbers | |
Allen Bradley Information | Technical Description Chassis, Mounting, Controllogix, 4 Slots, 20 Inch X 20 Inch X 8 Inch |
Alternate Part Numbers | 1756A4 |
| Category | ControlLogix |
| Part Number | 1756-A4 |
| Manufacturer | Allen-Bradley |
Can the 1756-A4 be repaired?
Yes. NJT Automation offers mail-in repair for the 1756-A4, including diagnostic evaluation, component-level repair, and functional testing.
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
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-A4 failures
Failure patterns we regularly see on ControlLogix chassis hardware like the 1756-A4:
- 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
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-A4? Request a repair quote below. For immediate assistance, text photos of your faulty unit and a description of the symptoms to (414) 331-5954.
Still have questions?
Find answers to shipping, warranties, repairs, and more.