The Siemens 5SL6325-7CC is a SENTRON miniature circuit breaker (MCB) with a C-curve trip characteristic, rated 25 A at 400 VAC. Its 6 kA breaking capacity per EN 60898 covers most residential and light commercial distribution boards — enough for branch-circuit fault clearing where the prospective short-circuit current stays under that threshold. The 3-pole design fits three-phase loads or three single-phase circuits ganged on one handle.
What the ratings mean for fit
The C-curve trips magnetically between 5 and 10 times rated current — standard for motor-starter protection and general-purpose loads with moderate inrush. At 25 A it handles a 5.5 kW three-phase motor at 400 V without nuisance tripping on start-up, provided the motor's locked-rotor current stays under 250 A peak. The 6 kA breaking capacity is the maximum fault current it can safely interrupt; if your panel's prospective short-circuit current exceeds that, you need a current-limiting upstream device or a higher-rated breaker like the 5SL4363-7 (10 kA). Rated for overvoltage category III and pollution degree 2, it's suited for fixed installations inside a distribution board — not for outdoor or wet locations without an enclosure. The IP20 rating applies only with conductors connected; the busbar area is live when the breaker is open, so a sealable cover is standard for lockout/tagout compliance.
Mounting and panel integration
Snaps onto standard DIN rail. At 3 modular width units — 54 mm wide — it occupies three 18 mm slots in the distribution board. Depth is 76 mm with an installation depth of 70 mm; verify enclosure depth if using a shallow consumer unit. Mounting position is unrestricted, so it can be installed horizontally or inverted if the panel layout demands it. Supplementary devices (auxiliary contacts, shunt trips, alarm switches) can be clipped onto the right side without removing the breaker — useful for remote tripping or status feedback to a PLC.