Panel fit and rating
The Siemens SENTRON 5SY4510-5 is a 2-module wide (36 mm) miniature circuit breaker with a 1P+N pole configuration, rated 10 A at AC with a tripping characteristic A. It occupies two 18 mm DIN-rail slots — standard for a switched-neutral MCB — and the quick-assembly system snaps onto the rail without tools. The interrupting capacity is rated 10 kA per EN 60898 and 20 kA per IEC 60947-2, with an overvoltage category III and pollution degree 3 rating — meaning it handles fault levels typical of industrial sub-distribution boards and is suitable for fixed installations with non-conductive pollution. The dual standard also qualifies it under UL1077 for North American supplementary protection applications.
Temperature and environment derating
The 10 A rating holds at 35 °C ambient. Above that, the breaker derates linearly: 9.39 A at 40 °C, 9.07 A at 45 °C, 8.74 A at 50 °C, 8.4 A at 55 °C, and 8.04 A at 60 °C. Humidity also factors in: max 95% RH up to 55 °C, then 55% up to 70 °C, then 35% up to the 75 °C ceiling.
The breaker carries approvals to IEC/EN 60898-1 and IEC/EN 60947-2, plus UL1077 for the North American market. The sealable design (padlockable toggle) supports lockout/tagout procedures. The product designation per EN 61346-2 and IEC 81346-2 is function letter F — for circuit protection.