How Many Amps Does the Cisco C9300-48U Draw?

The Cisco Catalyst 9300-48U is a high-performance access-layer switch widely used in enterprise networks. As a full PoE+ (UPOE) capable model, it supports a maximum power budget of up to 960W and is often deployed in environments where accurate power and current planning is critical.

In this guide, we break down how many amps the Cisco C9300-48U draws under typical and maximum load conditions and help you plan your power setup efficiently.

How Much Power Does a Cisco Switch Consume?

The power consumption of a Cisco switch varies based on the model, port utilization, PoE load, and connected devices. For the C9300-48U, several factors influence power draw:

• Switch base power (no PoE load)
• PoE/UPOE power per port
• Redundant power supply configuration
• Environmental temperature

Cisco Catalyst 9300-48U Power Specifications

How Many Amps Does the Cisco C9300-48U Draw?

To calculate current (amps), use the formula:

Amps = Power (Watts) / Voltage (Volts)

At 1100W Load (max PoE usage):

• At 110V AC: 1100W ÷ 110V = 10A
• At 220V AC: 1100W ÷ 220V = 5A

At 130W Load (no PoE usage):

• At 110V AC: 130W ÷ 110V = ~1.2A
• At 220V AC: 130W ÷ 220V = ~0.6A

Keep in mind that startup inrush current may be higher briefly.

What Affects the Amperage Draw?

• Number of active PoE devices
• PoE type in use (PoE+, UPOE)
• Stacking modules or cables
• Dual PSU configurations

Which Power Supply Does Your Cisco 9300 Need?

Cisco offers multiple power supplies compatible with the 9300 series:

• PWR-C1-350WAC: Suitable for non-PoE deployments
• PWR-C1-715WAC: For mixed PoE environments
• PWR-C1-1100WAC: Required for full UPOE usage on 48 ports

Explore more Cisco power supply modules on Router-switch.com.

How Much Power Does a Cisco 24-Port Switch Draw?

A C9300-24U typically consumes:

• ~70–100W idle
• ~550–600W at full PoE load
• ~5–6A at 110V depending on load

Is the Cisco C9300 End of Life?

As of 2025, the Catalyst 9300 series is not EOL. It remains Cisco’s core enterprise access switch and a foundation of its SD-Access/DNA roadmap.

Check the latest Cisco Catalyst 9300 models and bundles on Router-switch.com.

Final Tips for Power Planning

• Leave 15–20% headroom for safety
• Use Cisco’s Power Calculator for accurate estimates
• Consider redundant power for mission-critical sites

FAQ

Q1: What is the maximum power draw of a C9300-48U?

Approximately 1100W or 10A at 110V AC.

Q2: Can I use a 715W PSU for full UPOE?

No. You’ll need the 1100W PSU for 48-port UPOE use.

Q3: Does stacking increase power usage?

Yes, slightly. Expect 10–15W additional draw.