4-pole D-curve MCB at 10 A, 400 V, 10 kA
The Siemens 5SL4410-8CC is a 4-pole miniature circuit breaker with a D-tripping characteristic, rated 10 A at 400 V with a 10 kA interrupting capacity. Four poles give you full isolation on three-phase-plus-neutral circuits, common in European industrial panel builds.
DIN-rail integration notes
The 4-pole body takes 72 mm of rail width (4 × 18 mm per pole). Spring-cage terminals accept 0.75–25 mm² copper; strip length 10 mm. Torque to 2.5 Nm. The D-curve holds 10× In for 0.1 s minimum — adequate for direct-on-line motor starts up to about 4 kW.
