Siemens 5SY4506-5 — 6 A, Characteristic A, 2-Pole MCB
Pole configuration is 1P+N (2-pole housing) with neutral conductor switching, so it isolates both line and neutral on a single-width 36 mm footprint — common in single-phase final subcircuits where you want full isolation without a separate switched neutral bar.
Rated 6 A at 35 °C, but the continuous current must be derated as panel ambient rises: 5.63 A at 40 °C, 5.44 A at 45 °C, 5.24 A at 50 °C, 5.04 A at 55 °C, and 4.82 A at 60 °C. If the enclosure runs hot from adjacent drives or transformers, size up one frame or account for the reduced ampacity at your worst-case internal temperature. Operating ambient range is -40 °C to 75 °C, with humidity limits of 95 % up to 55 °C, 55 % up to 70 °C, and 35 % up to 75 °C — the part handles cold storage and hot panel conditions, but high humidity at elevated temperatures is the binding constraint for outdoor or unventilated enclosures.
Accepts any mounting position and any supply-side connection orientation — no top/bottom restriction, which simplifies busbar runs in crowded panels. Combined terminal top and bottom accepts standard screw-clamp wiring.
Certified to IEC/EN 60898-1 and IEC/EN 60947-2 / UL 1077.
Current production — no end-of-life notice.