Impact resistant plastic covered coils, safe to touch, for assembling a transformer in conjunction with the transformer core S (U8498112). Maximum voltage: 50 V (safety extra-low voltage) Terminals: 4 mm safety sockets Opening for iron cores: approx. 20x20 mm² Number of turns: 1200 Taps: 400/800/1200 Inductance: approx. 25 mH