Power Supply Box, Power Distribution Box for CCTV

A power supply box, also known as a power distribution box, allows surveillance system installers to easily manage the power to multiple CCTV cameras at a central point (usually at the location of the DVR). This allows your camera installation to be neater. For example, instead of having 8 individual transformers plugged into a power strip/electric surge protector, all of your camera power wires can neatly be run to a 9 port power supply box. We also have 4 port and 18 port models available.

Power supply boxes are typically installed near your DVR. These boxes are very simple to install. Each camera’s power cable simply screws into the power distribution block inside the box. The power supply box plugs into a standard power outlet. No electrician is required for installation. All of our boxes now use PTC auto reset fuses.

Our latest model power supply boxes use PTC auto reset fuses instead of traditional one time use fuses. The above image shows a power supply box on the left that uses traditional fuses. The one on the right is our latest generation model, which uses PTC. PTC is much more convenient because when there is a short circuit, the PTC turns the circuit off. When the short circuit is fixed, the PTC automatically resets. There is no burnt out fuse to replace.

Wiring Diagrams

Here are the most common ways that power supply boxes are used in video and audio surveillance installations. Please access the detailed guides using the above links.

This image shows the installation of 16 cameras using a Power Supply Box that allows connecting each one individually

Good quality Power Supply Box allow voltage variation to compensate for cable losses or high voltage that can reach the camera

A good CCTV camera can work with a 10% variation in power, so we can use a potentiometer like the one shown in the picture to vary the voltage for more or less voltage.

With a variation of 10% down, we have the voltage at 10.8V and with a variation of 10% up we have the voltage at 13.2V. Both are enough.