PWR-C4-950WAC-R CISCO

cisco PWR-C4-950WAC-R Ten Gigabit board

Brand：CISCO Model number：PWR-C4-950WAC-R

Country of origin: U.S. Product weight：0.55kg

HS code：8517623990

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Product Details：

Product Dimensions：

The PWR-C4-950WAC-R is a plug-in, hot-swappable power supply unit (PSU). The module is engineered with a front-to-back airflow (port-side intake) layout, often designated by the "R" suffix for reverse or rear exhaust. This layout matches specific data center and enterprise rack designs where maintaining structured hot-aisle/cold-aisle isolation is essential. It operates as a primary power conversion component, converting high-voltage alternating current (AC) from utility lines into stable direct current (DC) power required by the internal switch ASICs, CPU modules, and transceiver ports.

Product Parameters

Maximum Power Output: 950 Watts
Input Voltage Range: AC 115 V to 230 V nominal (operational range typically 90 V to 264 VAC)
Input Frequency: 50 Hz to 60 Hz Range
Power Supply Efficiency: 94% (Platinum-rated equivalent efficiency)
Maximum System Power Consumption Support: 850 Watts maximum sustained system draw
Total Output Thermal Dissipation: 2901 BTU per hour maximum at 850 Watts load
Input Current Ratings: 10 A at 115 VAC, 5 A at 230 VAC
Main DC Output Ratings: 12 VDC at 79 A, with an auxiliary rail providing 12 VDC at 3 A
Output Holdup Time: Minimum of 10 milliseconds at maximum electrical load
Power Supply Input Receptacle: AC IEC 60320 C16 type connector
Power Cord Amperage Rating: AC 15 A requirement
Mean Time Between Failures (MTBF): Integrated design rated up to approximately 2.26 million hours

Product Advantages

A primary advantage of the PWR-C4-950WAC-R is its High Energy Efficiency. Operating at up to 94% efficiency minimizes power waste and lowers the overall operational cost and thermal footprint of the network cabinet. The Hot-Swappable Redundancy allows network administrators to install or replace a failed power supply module in a 1+1 or N+1 configuration without powering down the switch chassis, ensuring 100% network uptime during maintenance.

The Front-to-Back Airflow Integration is an architectural benefit that ensures the power supply works in harmony with the switch's internal cooling fan modules, preventing internal hot spots and thermal throttling. Furthermore, the unit features a High MTBF, which emphasizes its robust industrial-grade internal components engineered for long-term operational longevity under continuous high-capacity network loads.

Important Considerations and Precautions

When deploying the PWR-C4-950WAC-R, verifying Airflow Direction Alignment is critical. You must ensure that the front-to-back cooling direction of this "R" suffix model matches the airflow direction of the other installed power supplies and fan trays within the same chassis; mixing opposite airflows can cause rapid overheating and component damage.

Care must be taken regarding Input Voltage and Cable Selection; ensure that the AC power cords used are rated for 15 A and terminate in an IEC 60320 C16 receptacle, as standard C14 cords will not physically fit the high-temperature rated C16 inlet on this unit. During hot-swapping procedures, remember to Disconnect the AC Power Source from the module before unlatching and slide-extracting it from the chassis to eliminate the risk of electrical arcing at the backplane connectors. Lastly, if a slot is left empty when operating with a single power supply, always install a Blank Power Supply Panel to maintain the correct static pressure and airflow pathway inside the switch chassis.

Product Applications

The PWR-C4-950WAC-R is widely utilized in enterprise, campus, and data center core environments wherever Cisco Catalyst 9500 switches are deployed.

Enterprise Campus Core: Powering core aggregation switches (e.g., C9500-24Q, C9500-40X) that tie together multiple distribution layers across an office campus.
Data Center Top-of-Rack (ToR): Providing high-density infrastructure power in data center racks that demand structured front-to-back cooling alignment.
High-Density IoT Infrastructure: Supporting high-performance backplane processing where switches aggregate thousands of downstream IoT or cloud-connected end devices.
Mission-Critical Network Nodes: Installed in pairs within financial institutions, healthcare networks, and government offices where power redundancy is mandatory to prevent network isolation.

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