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
