L 2/10 230 ff 3+1
L 2/10 230 ff 3+1 is a ready to install assembly of three voltage limiting and a voltage switching SPD providing four modes of protection, typically installed in Sub Distribution Boards (SDBs) for three-phase plus neutral 230/400 V TT-systems where connection type CT2 (3+1) is required according to HD 60364-5-534, with the following features and benefits:
• Impulse test classification: Test class II / Type 2 (according to IEC/EN 61643-11);
• Backup protection is not required with an upstream MCB ≤ 125 A or up to an Isccr ≤ 4 kA rms;
• NFC No Follow Current® technology, there are no follow currents drawn from the power supply system after operation;
• Three colour Status Indicator with progressive indication of remaining performance.