The Siemens 5SL4404-6 is a SENTRON 5SL4 miniature circuit breaker rated 4 A at 400 V AC, B-curve tripping characteristic, 4-pole. The B-curve (3–5 × In) trips fast on short-circuit but tolerates the inrush of resistive and modest motor loads; it's the standard choice for general-purpose branch circuits in residential buildings and infrastructure (the listed suitability).
Four poles, 72 mm wide — fits a standard DIN-rail panel
Four poles (4P) in a 72 mm-wide housing (4 width units at 18 mm each). Mounts on a DIN rail in any orientation. Installation depth is 70 mm; total depth with terminals is 76 mm. Tightening torque is 2.5 to 3 N·m. The housing is sealable and halogen-free, silicone-free. IP20 with conductors connected, overvoltage category III. Ambient temperature range -25 to +55 °C, storage -40 to +75 °C.