30 A, 3-pole, C-curve — panel-builder fit
Siemens SENTRON 5SJ4330-7HG42 is a 30 A, 3-pole miniature circuit breaker with C-trip characteristic, rated 400 V AC. Occupies 3 modular width units (54 mm) on standard DIN rail with 70 mm depth. IP20 with conductors connected; IP40 in the handle area. Halogen- and silicon-free construction suits sensitive environments.
Same-family alternatives — 5SJ4316-7HG42 and 5SJ4325-8HG42
Within the 5SJ4 series, a lower-current C-curve variant shares the same 54 mm width, 70 mm depth, and combined top/bottom terminals. For high-inrush loads, the 5SJ4325-8HG42 (D-curve) fits the same 3-module width.