In-Depth Cisco PWR-C5-125WAC= Power Supply Datasheet and Pricing Guide for Network Professionals

1. Product Overview

The Cisco PWR-C5-125WAC= is a high-performance AC power supply unit designed specifically for Cisco Catalyst 3850 Series switches and other compatible Cisco network devices. Engineered to deliver reliable and efficient power, this 125-watt AC power supply ensures optimal uptime and operational stability in enterprise-grade network environments.

As a critical component in Cisco’s modular switch architecture, the PWR-C5-125WAC= supports redundant power configurations, enabling seamless failover and enhanced resiliency. This power supply is hot-swappable, allowing network administrators to replace or upgrade power modules without interrupting network operations, a vital feature for mission-critical deployments.

The unit is designed to meet stringent industry standards for energy efficiency and electromagnetic compatibility, making it suitable for deployment in data centers, campus networks, and service provider infrastructures. Its compact form factor and robust build quality align with Cisco’s commitment to delivering durable and scalable networking solutions.

2. Product Specifications

Electrical Specifications

The PWR-C5-125WAC= power supply operates on an input voltage range of 100 to 240 VAC, supporting both 50 Hz and 60 Hz frequency standards. It delivers a maximum output power of 125 watts, with an output voltage tailored to the requirements of Cisco Catalyst 3850 switches.

• Input Voltage: 100–240 VAC
• Input Frequency: 50–60 Hz
• Output Power: 125 Watts (Max)
• Output Voltage: 12 VDC (nominal)
• Power Factor Correction: Active PFC compliant
• Efficiency: >85% typical under full load

Physical and Environmental Specifications

The power supply module is designed with a compact and modular form factor to fit seamlessly into Cisco Catalyst 3850 chassis. It supports hot-swapping and features an integrated cooling fan to maintain optimal operating temperatures.

• Dimensions (HxWxD): Approximately 1.5 x 4.5 x 7.5 inches (38 x 114 x 191 mm)
• Weight: Approximately 1.2 kg (2.65 lbs)
• Operating Temperature: 0°C to 40°C (32°F to 104°F)
• Storage Temperature: -40°C to 70°C (-40°F to 158°F)
• Humidity: 10% to 90% non-condensing
• Cooling: Integrated fan with airflow optimized for chassis ventilation

Compliance and Certifications

The PWR-C5-125WAC= complies with multiple international safety and electromagnetic standards, ensuring safe operation and minimal interference in complex network environments.

• UL 60950-1 and IEC 60950-1 safety standards
• FCC Part 15 Class A emissions compliance
• CE Marking for European conformity
• RoHS compliant (Restriction of Hazardous Substances)
• Energy Star qualified for energy efficiency

3. Features and Benefits

High Reliability and Redundancy Support

The PWR-C5-125WAC= is engineered to support Cisco Catalyst 3850 switches in redundant power configurations. This capability allows two power supplies to operate in parallel, providing failover protection in the event of a power supply failure. This redundancy is critical for maintaining uninterrupted network services in enterprise and data center environments.

Hot-Swappable Design

The hot-swappable nature of the PWR-C5-125WAC= enables network engineers to replace or upgrade power supplies without powering down the switch or disrupting network traffic. This feature significantly reduces maintenance windows and enhances overall network availability.

Energy Efficiency and Thermal Management

Incorporating active power factor correction (PFC) and high-efficiency components, the PWR-C5-125WAC= minimizes energy consumption and heat generation. The integrated cooling fan and optimized airflow design ensure stable operation even under heavy load conditions, extending the lifespan of both the power supply and the host switch.

Compact and Modular Form Factor

The compact size of the PWR-C5-125WAC= allows for efficient use of chassis space, enabling Cisco Catalyst 3850 switches to maintain a small footprint while delivering robust power capabilities. This modularity simplifies inventory management and streamlines field replacements.

Comprehensive Safety and Compliance

Designed to meet global safety and electromagnetic compatibility standards, the PWR-C5-125WAC= ensures safe operation in diverse environments. Its compliance with RoHS and Energy Star standards also aligns with organizational sustainability goals.

Seamless Integration with Cisco Network Ecosystem

As an official Cisco product, the PWR-C5-125WAC= integrates seamlessly with Cisco IOS and Cisco DNA Center management