AC Config 1 Power Supply 1100W PWR-C1-1100WAC-P

Cisco PWR-C1-1100WAC-P – 1100W AC Power Supply with Port-Side Exhaust Airflow for Catalyst & Nexus Switches

AC Config 1 Power Supply

The Cisco PWR-C1-1100WAC-P is a high-capacity, enterprise-grade 1100-watt AC power supply engineered for Cisco Catalyst 9000 and Nexus 9000 Series switches, including the Catalyst 9300, 9400, 9500, and Nexus 9300-EX/FX platforms. Designed with port-side exhaust (P) airflow, this power supply delivers reliable, redundant, and intelligent power management while aligning with specific data center cooling strategies that require hot air to be expelled through the front (port side) of the chassis.

Ideal for high-density, power-hungry deployments—such as those supporting PoE++ (up to 90W per port), high-speed optics, or modular uplinks—the PWR-C1-1100WAC-P ensures continuous operation in mission-critical environments, from enterprise cores to cloud-scale data centers.

Key Features & Specifications

• Model: PWR-C1-1100WAC-P
• Power Output: 1100W AC
• Input Voltage: 100–240V AC (auto-ranging, 50/60 Hz)
• Airflow Direction: Port-side exhaust (P) – hot air exhausted through the front (port side)
• Compatibility:
  • Cisco Catalyst 9300, 9400, and 9500 Series (select models with high-wattage PSU support)
  • Cisco Nexus 9300-EX/FX Series (e.g., N9K-C93180YC-EX, N9K-C9336C-FX2)
• Redundancy: Supports 1+1 or N+1 power redundancy
• Hot-Swappable: Yes – enables replacement without service interruption
• Efficiency: 80 PLUS Platinum certified for energy efficiency and lower operational costs
• Intelligent Management: Fully monitored via Cisco IOS-XE or NX-OS (show power, show environment)
• Cisco Certified: Validated for thermal, electrical, and mechanical integration

Note: The “-P” suffix denotes Port-side Exhaust airflow. Always ensure all system components (power supplies, fans) use matching airflow to prevent thermal issues.

Understanding Port-Side Exhaust (P) Airflow

In standard data center designs, front-to-back (port-side intake) is common—cool air enters the front, hot air exits the rear. However, some deployments (e.g., rear-door heat exchangers, back-to-back racks, or legacy layouts) require the reverse:

• Port-side exhaust (P) means:
  • Cool air is drawn from the rear (power side)
  • Hot air is expelled through the front (port side)

This configuration is less common but critical in specific environments. Installing a P (exhaust) PSU in a system designed for I (intake) airflow—or vice versa—can cause:

• Overheating
• Thermal throttling
• System shutdowns
• Loss of Cisco TAC support

Always verify your chassis’s required airflow before ordering.

High Power for Demanding Workloads

With 1100W capacity, the PWR-C1-1100WAC-P supports:

• High-density PoE++: Powering dozens of IP phones, Wi-Fi 6/6E/7 APs, cameras, and IoT devices
• 40G/100G/400G optics and high-speed line cards
• Modular uplinks and stacking in aggregation layers
• Future-proofing for software and hardware upgrades

In redundant configurations, two 1100W PSUs provide ample headroom for peak loads while maintaining failover protection.