The Phoenix Contact solarline string combiner boxes (SCBs) are used in both small rooftop systems and large ground-mounted systems. Their functions include collecting and protecting strings and, if necessary, separating the panels from the rest of the system by means of a switch disconnector or fire service switch disconnector.
Open-circuit voltage (UOC) maximum 1100 V DC MPP voltage (Un) maximum 1000 V DC Number of string inputs 2 (per MPP tracker) Current per string (maximum) 20 A (Imax) Number of outputs 1 (per MPP tracker) Number of supported MPP trackers 2 Surge protective device T2 Protection level Up ≤ 3.7 kV Total discharge current Itotal (8/20) μs 40 kA
