18 Channel CCTV Power Supply Box 12V DC 15A Fused Distribution Unit

The 18 Channel CCTV Power Supply Box 12V DC 15A Fused Distribution Unit (SKU PSU-BOX-12V-15A-18CH) takes one mains connection and splits it into 18 separately fused 12V DC camera feeds.

What the specs mean in practice

• 100–240V AC input. AC is alternating current, the mains supply. One connection feeds the whole unit.
• 12V DC regulated output. DC is direct current. Regulated means the output is held at a steady 12V for the cameras.
• 15A total. This is a shared budget across all 18 outputs, about 180W overall (12V × 15A). It is not 15A per channel.
• PTC fuse on every output. PTC stands for positive temperature coefficient. A fault on one camera run is isolated, so the other cameras keep their power.
• LED indicators. They show power status, so active or fault conditions are easy to spot.
• Lockable metal wall-mount enclosure. The front door locks over the internal wiring.

Cameras it suits

Analog CCTV cameras, plus HD-TVI (High Definition Transport Video Interface), AHD (Analogue High Definition) and CVI (Composite Video Interface) cameras that need stable 12V power.

What else you need

• Cameras that accept 12V DC directly.
• A power cable from each output to its camera.
• A total of all camera currents that stays within 15A.

Cameras with infrared (IR) LEDs draw more current at night. A weak supply or a long, thin cable run can cause voltage drop, which shows up as flicker or a black image after dark.