Santon DFS-14 firefighter safety switch for solar PV systems, 4 poles, 2 strings. In most photovoltaic systems, the DC isolator is integrated into the DC/AC power inverter. After switching off the DC isolator, the cables between the DC solar modules and DC/AC power inverter running through the building are still subject to up to 1000 VDC. in the event of a fire, firefighters are exposed to a very serious source of potential danger. The santon firefighter safety switch (DFS) provides the solution. It directly disconnects the DC current in close proximity to the solar modules and creates a safer situation for firefighters.
• AC power shut down = automatic DC power shut down
• Auto reset when AC power is back = DC power is back
• Easy to install for small to large, existing and new installations
