The 5SP3725-0: The 25 A rating at 230/400 V defines the continuous current-carrying capacity and the voltage level at which the breaker's interrupting capacity is guaranteed. For a single-pole SHU pattern, this is sized for branch-circuit protection in a main conductor path — typically a feeder or sub-feed in a distribution board. The 230/400 V rating covers both single-phase (230 V line-to-neutral) and three-phase (400 V line-to-line) systems, so it fits standard European LV networks.
Deployment context
Snap-on mounting to DIN rail EN 60715. In a panel, the single-pole width (1 module) conserves DIN space — useful when ganging multiple poles for multi-phase circuits or when fitting into a crowded distribution board. The SHU (main conductor) designation means it is intended for the main incoming path, not a downstream load branch, so coordination studies should treat it as the upstream device.
With a current lifecycle stage, the 5SP3725-0 is available through standard Siemens distribution. No PCN or EOL notice is associated with this part at present.