The Siemens SENTRON 5SY6020-7CC is a 1P+N miniature circuit breaker rated 20 A with a C-curve tripping characteristic, breaking 6 kA per EN 60898 at 50/60 Hz. At 40 °C ambient the continuous rating derates to 18.8 A; at 45 °C it drops to 18.2 A. Plan your branch-circuit load at the derated figure, not the 30 °C nameplate, if the breaker shares a crowded enclosure.
Depth is 76 mm, height 90 mm, width 18 mm — one modular unit. Installation depth to the rail is 70 mm. The IP20 rating applies with connected conductors; the enclosure is sealable for tamper-evident applications.
Compliance & Documentation
Halogen-free and silicon-free construction. The product is designated per IEC 81346-2 as function F. Energy limitation class 3 indicates fast arc quenching that limits let-through energy — relevant for downstream equipment protection.