Cisco NXA-PAC-500W-PE
Nexus NEBs AC 500W PSU - Port Side Exhaust
Product Highlights
What's Included
Maintaining consistent, clean power in high-density data center environments is non-negotiable — a single power event can cascade into costly downtime across your switching fabric. The Cisco NXA-PAC-500W-PE is a 500W AC power supply module purpose-built for the Cisco Nexus 9000 Series, delivering NEBS-compliant, carrier-grade power with port-side exhaust (back-to-front) airflow.
Designed as a hot-swappable plug-in module, the NXA-PAC-500W-PE supports seamless field replacement and 1+1 redundant power configurations, ensuring your Nexus 9300-EX platform switches stay online even during maintenance windows. Its wide AC input voltage range of 100–240 VAC makes it suitable for deployment in data centers worldwide without manual voltage selection.
The port-side exhaust airflow direction — visually identified by its blue housing — is engineered to align with standard hot-aisle/cold-aisle cooling architectures, helping maintain optimal thermal performance across your rack. Whether you're powering a Nexus 93180YC-EX, 93108TC-EX, or 93180LC-EX, this PSU delivers the efficiency and reliability that mission-critical network infrastructure demands. Each unit ships with an AC power cord, so you can deploy immediately upon arrival.
Features & Benefits
NEBS-Compliant 500W AC Power
The NXA-PAC-500W-PE delivers 500 watts of continuous AC power and meets NEBS (Network Equipment-Building System) standards for carrier-grade deployments. Its wide input voltage range of 90–264 VAC accommodates global power grids, eliminating the need for external voltage converters or manual range switching.
Port-Side Exhaust Airflow
Engineered with back-to-front (port-side exhaust) airflow, this PSU pushes heated air toward the rear of the chassis and out through the port side. This design integrates seamlessly with hot-aisle/cold-aisle data center cooling layouts, reducing thermal hotspots and improving overall rack efficiency. The blue color coding ensures installers can visually confirm correct airflow orientation at a glance.
Hot-Swappable Redundancy
The plug-in module design supports hot-swap replacement — you can insert or remove the PSU without powering down the host switch. Deploy two units in a 1+1 redundant configuration to ensure continuous power delivery even if one supply fails, a critical requirement for production network environments.
Compact, Lightweight Form Factor
Weighing just 2.42 lb (1.1 kg), the NXA-PAC-500W-PE is a compact plug-in module that requires no tools for installation. Its lightweight design simplifies logistics, sparing, and field replacement — especially valuable when managing large-scale deployments across multiple sites.
Deployment Scenarios
Data Center Leaf/Spine Switching
Power your Nexus 9300-EX leaf switches in a VXLAN EVPN fabric with redundant, NEBS-compliant PSUs. The port-side exhaust airflow aligns with standard data center hot-aisle/cold-aisle configurations, maintaining optimal thermal conditions at scale.
Cisco ACI Deployments
The NXA-PAC-500W-PE is compatible with Nexus 9300-EX switches operating in ACI mode. Ensure your ACI leaf nodes have reliable, redundant power with a PSU that meets the stringent environmental requirements of carrier and enterprise data centers.
Spare and Disaster Recovery Inventory
Keep pre-staged NXA-PAC-500W-PE units in your spare parts inventory for rapid hot-swap replacement during power supply failures. The lightweight, tool-free design means field technicians can restore redundancy in minutes without a maintenance window.
General
Power
Thermal / Airflow
Physical
Compliance
Compatibility Notes
Supported Cisco Nexus Platforms:
- Cisco Nexus 93180YC-EX (N9K-C93180YC-EX)
- Cisco Nexus 93108TC-EX (N9K-C93108TC-EX)
- Cisco Nexus 93180LC-EX (N9K-C93180LC-EX)
Important: Ensure all power supplies and fan modules in the chassis share the same airflow direction. Pair the NXA-PAC-500W-PE (port-side exhaust / blue) with NXA-FAN-30CFM-F (port-side exhaust / blue) fan modules. Do not mix port-side exhaust and port-side intake components in the same chassis.
Downloads & Resources
Frequently Asked Questions
| Part Number | Product | Key Difference |
|---|---|---|
| NXA-PAC-500W-PI | Nexus 500W AC PSU - Port-Side Intake | Same 500W AC capacity but with front-to-back (port-side intake) airflow — choose based on your data center cooling orientation. |
| N9K-PUV-1200W | Nexus 9000 1200W HVAC/HVDC PSU | Higher 1200W capacity with dual-direction (HVAC/HVDC) support — ideal for switches with greater power demands or mixed power environments. |
| NXA-PDC-930W-PE | Nexus 930W DC PSU - Port-Side Exhaust | 930W DC power supply with matching port-side exhaust airflow — select for DC-powered data center or telecom central office environments. |
| NXA-PDC-930W-PI | Nexus 930W DC PSU - Port-Side Intake | 930W DC power supply with port-side intake airflow — for DC-powered facilities using front-to-back cooling. |