What is the maximum power budget for a 24 port PoE switch

  The maximum power budget for a 24-port PoE switch depends on the PoE standard it supports and the total power capacity designed by the manufacturer. Here's a detailed breakdown of factors that determine the power budget and common configurations:   1. PoE Standards and Per-Port Power Delivery The PoE standard determines how much power a single port can supply. Below are the main standards: IEEE 802.3af (PoE) --- Maximum per-port power: 15.4W --- Typical use cases: IP phones, basic IP cameras, and low-power wireless access points. --- Maximum total power budget: 15.4W × 24 = 369.6W However, manufacturers typically design the power budget slightly below this theoretical maximum for reliability. IEEE 802.3at (PoE+) --- Maximum per-port power: 30W --- Typical use cases: PTZ cameras, dual-band wireless APs, and video phones. --- Maximum total power budget: 30W × 24 = 720W This is common for mid-tier PoE switches, although some might limit the budget to ensure stable operation. IEEE 802.3bt (PoE++) Maximum per-port power: --- 60W (Type 3) --- 90W (Type 4) --- Typical use cases: High-power devices like outdoor PTZ cameras with heaters, LED lighting, and high-capacity APs. --- Maximum total power budget: Up to 2160W (90W × 24). This is rare in practice, as such switches are designed with limited simultaneous high-power usage in mind.     2. Power Supply and Manufacturer Limitations Most 24-port PoE switches do not supply the theoretical maximum power to all ports simultaneously. Manufacturers design switches with a shared power budget, which limits how many ports can operate at maximum power. --- Entry-level switches: Power budgets typically range from 250W to 370W, sufficient for devices like VoIP phones or basic IP cameras. --- Mid-tier switches: Power budgets are often 400W to 600W, accommodating more PoE+ devices. --- High-end switches: These may offer power budgets of 750W to 1000W+, often designed for enterprise environments with PoE++ devices.     3. Power Management Features Modern PoE switches often include dynamic power allocation and power prioritization features: --- Dynamic allocation: Only delivers the power each device needs, conserving energy. --- Power prioritization: Ensures critical devices (e.g., IP cameras or APs) receive power if the budget is exceeded.     4. Real-World Examples Here are examples of maximum power budgets for different types of 24-port PoE switches: --- Cisco Catalyst 9200L 24P PoE+ Switch: 370W power budget (PoE+). --- Ubiquiti UniFi Switch Pro 24 PoE: 400W power budget (PoE+). --- Netgear GS728TPP (ProSAFE): 760W power budget (PoE+). --- TP-Link TL-SG3428XMP: 384W power budget (PoE+).     Conclusion The maximum power budget of a 24 port PoE switch typically ranges from 250W to over 1000W, depending on the PoE standard and the switch’s power supply design. When selecting a switch: 1.Calculate Device Requirements: Add up the power needs of all PoE devices. 2.Choose the Right Budget: Ensure the switch can meet these demands with some overhead. 3.Plan for Scalability: Consider future network expansion and potential for higher-power devices.