What this MCB is and where it fits
The Siemens 5SY4116-6-ZW07 is a 1-pole miniature circuit breaker from the SENTRON family, built to IEC / EN 60898-1 and IEC / EN 60947-2 / UL1077 standards. The B tripping characteristic means it trips at 3 to 5 times rated current — suited for protecting lighting circuits, control transformers, and general-purpose wiring where inrush is low. With a 10 kA breaking capacity per EN 60898 and 20 kA per IEC 60947-2, it handles fault currents typical in commercial and light industrial panels. The 18 mm width (1 modular unit) snaps onto a DIN rail and occupies one slot in a standard distribution board.
Key ratings and what they mean for the panel
Rated AC operating voltage is 400 V; single- or multi-phase operation goes to 440 V. DC rating is 60 V (max 72 V), with a DC breaking capacity of 15 kA per IEC 60947-2 — useful for DC control circuits or battery-backed supplies. The 5 kA rating under UL 1077 / CSA C22.2 No.235 covers North American acceptance. Pollution degree 3 and overvoltage category III mean it's rated for the harsh environment inside a typical industrial panel — not just clean conditioned spaces. Temperature range is -40 °C to 75 °C, with a derating curve: max 95% humidity up to 55 °C, tapering to 35% at 75 °C. The IP20 rating (with connected conductors) is standard for enclosed panel-mount gear — no special sealing required inside the cabinet.
Panel fit and wiring notes
Depth is 76 mm (installation depth 70 mm), height 90 mm. Combined terminals top and bottom; supply cord position is unrestricted. Sealable. Mounts in any position via quick-assembly system.