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1756-A7

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The Allen-Bradley 1756-A7 is a seven-slot, horizontally mounted ControlLogix standard chassis with a 4.5 W maximum chassis power dissipation.
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Technical specifications for 1756-A7

  • Manufacturer:
    Allen-Bradley
  • Part Number:
    1756-A7
  • Product Family:
    ControlLogix
  • Product Type:
    Allen-Bradley 1756-A7 7-Slot ControlLogix Chassis
  • Stock:
    1
  • Slots:
    7
  • Power Dissipation:
    4.5 W max
  • Mounting Method:
    Horizontal only
  • Location:
    Panel
  • Minimum Cabinet Size:
    50.8 x 61.0 x 20.3 cm
  • Backplane Current at 5.1V DC:
    15 A chassis / 6 A slot max
  • Backplane Current at 24V DC:
    2.8 A chassis / slot max
  • Operating Temperature:
    0 to 60 C
  • Weight:
    1.1 kg
  • Estimated shipping dimensions:
    Product dimensions: 16.9 x 29.1 x 14.48 cm (H x W x D).
  • Tariff Code:
    8537101190
  • Country of origin:
    USA
  • Place of shipment:
    Xiamen,Fujian,China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Specifications Expansion Balance Power Placement Service Access

Features:

  • •Seven-slot standard ControlLogix backplane
  • •Horizontal panel mounting for mid-size module layouts
  • •Official minimum cabinet recommendation supports enclosure planning

1756-A7 offers seven positions for a balanced ControlLogix controller, network, motion, or I/O layout.

The slot plan should document installed modules, justified spare capacity, backplane demand, and the selected power supply.

Maintenance planning should preserve wiring access, grounding, consistent labels, and the horizontal panel orientation.

Availability is subject to Apter Power's current inventory and sourcing confirmation.

Verified resources for Allen-Bradley 1756-A7:

Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.

Allen-Bradley 1756-A7 7-Slot ControlLogix Chassis Specs

General

  • ManufacturerAllen-Bradley
  • Model1756-A7
  • ConditionNew Original ready stock
  • Product FamilyControlLogix

Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.

Capacity and expansion balance

  • •Seven positions: Map controller, network, I/O, and specialty modules before ordering.
  • •Spare strategy: Reserve only the slots justified by the site expansion plan.
  • •Power budget: Calculate installed-module demand against the selected supply.
  • •Lifecycle record: Keep the chassis series with the project hardware list.

Power and backplane preparation

  • •Left-side supply: Allow space for the standard ControlLogix power supply.
  • •Backplane load: Review 5.1 V and 24 V demand across installed modules.
  • •Grounding: Follow functional and protective-earth requirements.
  • •Cable separation: Maintain practical wiring routes around the seven-slot assembly.

Maintenance access planning

  • •Horizontal mount: Retain the specified chassis orientation.
  • •Module removal: Leave clearance for wiring arms and module extraction.
  • •Label control: Use consistent slot labels in drawings and panel records.
  • •Change review: Update the project record after any slot reassignment.
Description
The Allen-Bradley 1756-A7 is a seven-slot standard chassis that provides the ControlLogix backplane for power distribution and module communication.

The Allen-Bradley 1756-A7 is intended for horizontal panel mounting and a minimum cabinet recommendation of 50.8 x 61.0 x 20.3 cm. Its power supply mounts on the left side.

The Allen-Bradley 1756-A7 offers more allocation flexibility than the four-slot chassis while keeping the final slot map, backplane load, enclosure clearance, and service access central to system planning.
Revisions

Revision Part #

Also known as

1756-A7 Ser B
1756-A7/B, Series B, Rev B
1756-A7 Ser C
1756-A7/C, Series C, Rev C
Alternative Names
1756A7 1756 A7 AB 1756-A7 Allen Bradley 1756-A7 Rockwell 1756-A7 ControlLogix 1756-A7 1756-A7 chassis ControlLogix 7-slot chassis
Technical notes
The Allen-Bradley 1756-A7 is a seven-slot, horizontally mounted ControlLogix standard chassis with a 4.5 W maximum chassis power dissipation. Confirm the installed chassis, series, power architecture, and module context before replacement.
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
What project profile fits Allen-Bradley 1756-A7?
It fits ControlLogix systems needing seven module positions for a balanced controller, network, motion, or I/O arrangement.
What should engineers review before replacing 1756-A7?
Review the chassis series, complete slot map, power supply, enclosure clearance, grounding, and cable-routing constraints.
Can a 1756-A7 replacement be selected only by slot count?
No. Confirm series, physical panel arrangement, power architecture, installed modules, and validated project documentation.
How should spare capacity be planned in 1756-A7?
Count all required modules and decide whether maintenance or expansion needs justify leaving one or more documented spare slots.
What information improves a 1756-A7 procurement request?
Include the current chassis nameplate, series, power supply, installed module list, destination, quantity, and shutdown schedule.
How can Apter Power assist with 1756-A7 sourcing?
Apter Power can review the requested chassis, project slot count, documentation needs, and delivery destination before quotation.