Current transformer block for LV NH1-3 3-phase 300/5A 5VA class 0.5S. Transformer block for NH fuse switch disconnector of the LVS series size NH 1-3, easy to retrofit in the outgoing area, transformer in accordance with DIN EN 60044-1. Taps S1, S2 and voltage for each phase easily accessible from the front. With screw connection M12, including screws and with short connection compartment cover (ARA).