1756-N2 ControlLogix Empty Slot Cover 2-Pack | Allen-Bradley

The Original New Allen-Bradley 1756-N2 is a passive slot filler module designed to protect unoccupied slots in ControlLogix 1756 chassis systems. Supplied as a package of two single-slot covers, this essential accessory maintains proper system airflow, prevents dust and debris ingress, and safeguards exposed backplane connectors from contamination or accidental contact. No configuration or programming is required for installation.

Core Engineering Highlights:
2 passive slot filler modules per package | Single-slot width | No backplane current draw | 0-60°C operating temperature | Protects vacant slots from dust, debris, and contamination | Maintains proper chassis airflow and cooling

Key Features:

• Original New Allen-Bradley 1756-N2 slot filler package

• Two passive modules per package – enough to cover two empty slots

• Single-slot width design fits any unused ControlLogix chassis slot

• No electronic circuitry – purely mechanical protective cover

• Zero backplane current draw – consumes no system power

• Hot-swappable – can be installed or removed with or without power

• Maintains proper airflow and cooling for adjacent modules

• Prevents dust, debris, and contaminants from entering open slots

• Protects exposed backplane connectors from damage and corrosion

• No configuration or programming required

• Open-style enclosure with no status LEDs

• Operating temperature: 0°C to 60°C (32°F to 140°F)

Applications:

• Filling unused slots in ControlLogix 1756 chassis to maintain system integrity

• Protecting vacant slots from dust, debris, and industrial contaminants

• Maintaining proper airflow and cooling for adjacent I/O modules

• Preventing accidental contact with exposed backplane connectors

• System expansion preparation – reserve slots for future modules

• Protecting backplane from gases, vapors, and other environmental factors

Technical Specifications:

• Catalog Number: 1756-N2

• Product Type: ControlLogix Empty Slot Cover / Slot Filler Module

• Package Contents: 2 passive slot filler modules per package

• Slot Width: Single slot

• Backplane Current Draw: None (passive module, no electronic circuitry)

• Module Type: Slot Filler (dummy module without electronic circuitry)

• Removable and Insertion Under Power (RIUP): Yes

• Status LED Indicators: None

• Enclosure: Open-style (no IP rating)

• Dimensions (approx.): 145 x 70 x 35 mm (5.71 x 2.76 x 1.38 in.)

• Weight (per module): Approx. 0.1 kg (0.22 lbs)

• Weight (package): Approx. 0.13 kg (0.29 lbs)

• Operating Temperature: 0°C to 60°C (32°F to 140°F)

• Storage Temperature: –25°C to +60°C (–13°F to +140°F)

• Relative Humidity: 5% to 95% non-condensing

• Isolation Voltage: 50V continuous

• UPC: 612598167975

• Country of Origin: USA

System Compatibility:

• Rockwell Automation ControlLogix 1756 chassis (all series)

• Standard ControlLogix chassis (1756-A4, 1756-A7, 1756-A10, 1756-A13, 1756-A17)

• GuardLogix safety controllers

• All 1756 series I/O modules, communication modules, and specialty modules

• Note: For ControlLogix-XT extreme environment chassis, use 1756-N2XT

Related Products:

• 1756-N2XT – Slot filler for ControlLogix-XT extreme environment chassis

• 1756-A4 – ControlLogix 4-slot chassis

• 1756-A7 – ControlLogix 7-slot chassis

• 1756-A10 – ControlLogix 10-slot chassis

• 1756-PA72 / 1756-PA75 – ControlLogix AC power supplies

• 1756-EN2T / 1756-EN2TR – EtherNet/IP communication modules

PLC ERA is an independent industrial automation distributor supplying 100% genuine Original New products through established global supply channels. Allen-Bradley and ControlLogix are trademarks of Rockwell Automation.