Rating and fit
The Siemens 5SL6601-7CC is a 3+N-pole miniature circuit breaker rated 400 V with a 6 kA breaking capacity and a C-trip curve at 1 A.
Panel integration
Mounts on standard DIN rail. The 3+N-pole format occupies four modular width units (4 MW) in the enclosure. The neutral pole is switched, so it suits TN-S or TN-C-S systems where you want the neutral opened with the phases. Spring-cage terminals accept 0.2–2.5 mm² solid or ferruled stranded — strip to 8 mm. No busbar compatibility issues with the standard Siemens 5SL series comb bars.