18 Channel CCTV Power Supply Box 12V DC 30A Distribution Unit

The 18 Channel CCTV Power Supply Box 12V DC 30A Distribution Unit (SKU PSU-BOX-12V-30A-18CH) powers a multi-camera system from one central point. It accepts 100–240V AC (alternating current) input and supplies regulated 12V DC (direct current) output. That suits analogue CCTV cameras, HD-TVI, AHD and CVI cameras, and other 12V security devices.

What the specs mean in practice

• 30A total output. This is shared across all channels. Add up the current draw of every connected device and keep the total within 30A.
• 18 fused outputs. Each channel has its own PTC (positive temperature coefficient) fuse. A fault on one camera run is isolated, so it should not take the other cameras down with it.
• LED indicator on every output. The LED (light-emitting diode) shows which channels are live, which helps during installation and fault-finding.
• Metal enclosure with a lockable cover. The lock restricts access to the wiring connections inside. The box is designed for wall mounting in control rooms, equipment cupboards or cabling cabinets.

One box replaces a row of individual power adapters and keeps the wiring in one place.

What else you need

You still need the cameras, a recorder, and a cable from each output to its camera. Check cable length and quality. Infrared (IR) LEDs draw more power at night, and a long or poor cable can drop the voltage. The usual result is flickering or a black picture after dark.