Siemens 5SL4615-7 SENTRON MCB — 1.6 A, C-Curve, 3P+N, 400 V, 10 kA
The Siemens 5SL4615-7 is a SENTRON miniature circuit breaker rated 400 V AC with a 10 kA breaking capacity certified to both EN 60898 and IEC 60947-2. It carries a C tripping characteristic at 1.6 A in a 3P+N (4-pole) configuration, occupying 4 modular width units on a DIN rail. The 10 kA interrupting rating at 400 V means this breaker can safely clear a fault up to that level without upstream devices needing to coordinate — it's self-protecting for residential and light commercial infrastructure panels where the prospective short-circuit current stays under that threshold. The C-curve (5–10× In magnetic trip) suits moderate inrush loads like small motors, lighting banks, and transformer primaries where a B-curve would nuisance-trip but a D-curve would delay too long for conductor protection.
Fit and panel integration
Snap-on DIN rail mount, 72 mm wide (4 MW), 76 mm deep, 90 mm tall. Installation depth is 70 mm behind the panel face. Mounting position is unrestricted — horizontal, vertical, or flat. The IP20 finger-safe enclosure applies only with connected conductors; terminals are live when open. The 3P+N design switches the neutral pole as well — not just a solid link. That matters for TN-S or TT systems where you need guaranteed isolation on all live conductors during maintenance. Sealable housing (provision for a lead seal or lockout) and halogen-free / silicon-free construction, so it's suitable for environments where outgassing from a fault could contaminate nearby electronics or where compliance with low-smoke material specs is required.
Lifecycle and sourcing
Overvoltage category III (fixed installation, not plug-in), pollution degree 2 (non-conductive dust only), energy limitation class 3 — all standard for a DIN-rail MCB in a distribution board.
Electrical and mechanical ratings
Rated for AC operation at 400/440 V, 50/60 Hz. DC rating is 72 V maximum — usable for DC branch circuits but only up to that voltage. Mechanical endurance is 10,000 operating cycles typical. Power loss per pole at rated current in hot state is 1.3 W. Supplementary devices (auxiliary contacts, shunt trips, alarm switches) can be snapped onto the right side without removing the breaker from the rail. Ambient operating range is -40 °C to +75 °C.