Siemens 5SL4215-7 — 2-pole C-curve MCB for residential and infrastructure panels
The Siemens 5SL4215-7 is a 2-pole miniature circuit breaker from the SENTRON series, rated 1.6 A at 400 V AC with a C-curve tripping characteristic. It breaks fault currents up to 10 kA per EN 60898 and IEC 60947-2 — enough for most residential and light commercial distribution boards where the prospective short-circuit current stays under that threshold. The C-curve means the magnetic trip activates between 5 and 10 times the rated current — suited for loads with moderate inrush, like general-purpose outlets, lighting circuits, and small transformers. At 1.6 A, it's a low-current branch breaker, not a main or feeder device. Rated current derates with ambient temperature: 1.54 A at 40 °C, 1.5 A at 45 °C, 1.43 A at 55 °C. If the panel runs hot, factor that derating into the load calculation — don't load it to the full 1.6 A at elevated temperatures. Occupies 2 modular width units (36 mm) on a DIN rail. Depth is 76 mm, installation depth 70 mm. Mounting position any — vertical, horizontal, upside down; no derating required for orientation.
Integration notes — panel fit and auxiliaries
Snap-on DIN rail mount, any position. Sealable (can be locked in OFF position with a padlock). IP20 with connected conductors — fine for enclosed distribution boards, not for wet or dusty environments. Pollution degree 2, overvoltage category III. Accepts installable auxiliary devices (shunt trip, undervoltage release, auxiliary contacts) — the accessory slot is standard across the SENTRON 5SL family. Halogen-free and silicon-free construction, which matters for panels in clean-room or corrosive-gas environments where outgassing could affect contacts. Power loss per pole at rated current: 1.3 W. For a 2-pole breaker at full load, that's 2.6 W dissipated inside the enclosure — negligible for thermal management in a standard board, but worth noting if the panel is densely packed.
Comparison with 5SL4363-7 — what changes
The 5SL4363-7 is the same 2-pole, C-curve, 10 kA frame but rated 63 A instead of 1.6 A. Physically identical footprint (2 MW, 36 mm wide, same depth). Drops into the same panel without rewiring the busbar — only the load-side conductor size changes to match the higher current. If your BOM was built around the 5SL4363-7 but the branch load is under 1.6 A, the 5SL4215-7 is a direct form-fit swap.