PoE vs. PoE++: Which Switch Powers Your 4K CCTV System Best?

**PoE vs. PoE++: The Ultimate Guide for 4K CCTV System Power**  

4K cameras, PTZ domes, and IR heaters demand reliable power—choose the wrong switch, and you’ll face voltage drops, reboot loops, or even stuck IR cut filters at night. As a Guangzhou-based PoE switch factory, Gcraftsmantech breaks down PoE classes to help integrators pick the right switch for 4K CCTV setups.  

### IEEE PoE Standards Recap  

First, let’s clarify the basics:  

- **PoE (IEEE 802.3af)**: 15.4W per port, 12.95W usable for devices—ideal for low-power fixed cameras.  

- **PoE+ (IEEE 802.3at)**: 30W per port, 25.5W usable—fits most 4K fixed cameras and basic PTZs.  

- **PoE++ (IEEE 802.3bt Type 3)**: 60W per port, 51W usable—great for PTZs with zoom or small IR arrays.  

- **PoE++ (IEEE 802.3bt Type 4)**: 90W per port, 73W usable—perfect for power-hungry devices like heated PTZs, wipers, or radar-integrated cameras.  

### Real-World Power Needs for CCTV  

Not sure how much power your cameras require? Here are common figures:  

- Fixed 4K bullet camera: 8–10W  

- 4K PTZ with 30× zoom: 20–25W  

- Heated PTZ + wiper + radar: 50–65W  

- LED white-light array: 40W  

### Cable Length Matters  

Cat5e 24AWG cables lose 0.2V per 10m at 0.6A. At 80m, that’s a 7% power waste—enough to brown out a 20W PTZ. Opt for Cat6 23AWG pure copper cables, or choose a PoE++ switch with 55V output (like ours) to offset voltage drop.  

### Gcraftsmantech’s PoE++ Switch Advantage  

Our 8-port PoE++ switch (model GS-8BT90) is built for 4K CCTV systems:  

- 4 ports deliver 90W, 4 ports deliver 30W—total 380W power budget.  

- Dual 100V-240V hot-swap PSU for uninterrupted power.  

- Fanless design under 40°C ambient—quiet and durable.  

- MTBF of 190,000 hours, 30% cheaper than NETGEAR equivalents.  

- MOQ 50 units, direct from our Guangzhou factory.  

### Cost-Benefit Tips  

- 16-channel 4K fixed camera projects: PoE+ works (budget

- 6-channel long-range PTZ projects: PoE++ saves on separate 24V PSUs and trenching costs.  

- Future-proof: Buy PoE++ now to use with PoE+ devices today, and enable 90W support later.  

**Final Tip**: Match switch class to camera wattage, add 20% power headroom, and test voltage at the camera end. For a plug-and-play 90W PoE++ switch from a trusted Chinese manufacturer, visit www.gcraftsmantech.com or contact our sales team.  

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