Collection: Phoenix Contact

Phoenix Contact products in the catalogue: surge arresters for the DC side of photovoltaic installations, with the VAL-SPP-T2-1000DC-PV-2+V-UT type 2 up to 1000V, the VAL-SPP-T1-1000DC-PV-2+V-UT-R type 1+2 with a remote signalling contact, and the VAL-MS-T1/T2 600DC-PV/2+V for voltages up to 720V.

The 2+V designation describes the internal circuit: two varistors between the poles and earth plus a spark gap in series, an arrangement that avoids the permanent leakage currents to earth typical of varistor-only arresters.

The remote contact matters on monitored plants: it tells the data logger that a cartridge is spent, without waiting for a visual inspection.