The Siemens 5SL6601-8CC is a 3+N-pole miniature circuit breaker from the SENTRON 5SL6 family, rated 400 V with a 6 kA breaking capacity and a D-curve trip characteristic at 1 A. The 6 kA interrupting rating at 400 V covers most sub-distribution boards in commercial or light industrial panels; if your fault current exceeds that, you'd step up to an SENTRON 5SY or 5SP series with higher kA ratings.
Export control is straightforward: AL: N / ECCN: N, so no special licensing for cross-border shipment. Packaging is single-piece units, quantity unit of 1. The group code is P310 and product group 3821 for your internal cataloguing or ERP cross-reference.