These compact DIN rail mounted devices protect photovoltaic (PV) installations and feature Type 2 (Class C) protection from transient over-voltage due to indirect atmospheric discharge and switching actions.
The DSF-PV surge arresters are approved per UL 1449 3rd Edition and EN61643-11 (VDE 0675, part 6-11), and are compliant with future norm EN50539-11 and the new French standard UTE#C 6-740-5. Internal technology eliminates the need for fusing. Internal varistors are protected against any leakage current that would otherwise damage or cause premature aging when the nominal DC voltage is temporarily exceeded. This condition is likely to occur in the early hours of daylight when the solar panels are cold. A red optical indicator shows the protection status and voltage-free contacts offer remote status monitoring. The removable plug-in cartridges ensure fast and easy maintenance without the removal of any connections. The unit is Type 2, Class C according to EN61642-1, UTEC 61-740-51.
>> For more information on this product click here
