The DFS works according to standard international firefighter routines, resulting in valuable time being gained in case of a fire. This routine starts by shutting down all AC power in a house. As soon as this AC power is shut down, the DFS will automatically switch off and isolate all PV modules. Firefighters only have to follow their regular routine and do not have to waste valuable time eliminating the risk of the PV modules on the roof!
The DFS is powered by a motorized X-type switch and can therefore be located directly at the PV modules. This minimizes the amount of cabling with dangerous high voltage and leads to a completely powerless situation in the house, maximizing safety when needed.
A power down situation can occur at any time and for many reasons. The DFS has an auto reset function. The DFS automatically switches off if the regular AC power is down and automatically switches on when the regular AC power is on again. No manual reset is necessary every time the power has been down!
The DFS is equipped with the Santon X-type switch, which is the most popular DC switch for PV applications. The Santon ‘snap-action’ spring mechanism, with its response time of only 3 milliseconds, reduces the electric arc. In combination with the self-cleaning contacts, this increases durability and safety. Therefore the Santon X-type switch has been selected by many inverter manufacturers as their no. 1 DC switch.
With over 80 years of experience in developing DC switchgear for many different companies in many different and heavy industries all over the world, Santon has proven itself to be a leading DC switchgear company. With the Santon Domestic Firefighter safety Switch, all knowledge and experience come together for you to keep your home, family and valuables safe.
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