Siemens 5SL6506-6YA SENTRON MCB — B Curve, 6 A, 1P+N, 6 kA
The Siemens 5SL6506-6YA is a SENTRON miniature circuit breaker (MCB) with a B tripping characteristic, rated 6 A at 230 V AC, single-pole plus neutral (1P+N), and a 6 kA breaking capacity per EN 60898. This 6 A rating suits lighting circuits, small appliance feeds, and control transformers in a panel.
Rated 6 A at both AC and 30 °C ambient. At 40 °C the continuous current derates to 0.93 A — that is a steep drop, so if the breaker shares a 40 °C enclosure with other heat sources, size up. At 45 °C the rating recovers to 5.4 A, which suggests the 0.93 A figure may be a worst-case condition; still, plan for the lower number if your panel runs warm. The unit is sealable (provision for a lockout tag or seal wire) and halogen-free / silicon-free, which matters for clean-room or high-reliability environments where outgassing is a concern.
Snap-on DIN-rail mount, any orientation. Depth is 76 mm (installation depth 70 mm), width 36 mm (2 MW), height 90 mm. The IP20 rating applies only with the distribution board cover fitted — the breaker itself is not finger-safe without the enclosure door closed. No supplementary devices can be installed on this unit.