It's a 3+N-pole unit with a D tripping characteristic, sized at 0.5 A.
That's the straightforward read: if your BOM calls for a 5SL6605-8CC, it's still a standard catalog line at Siemens, not something you need to hunt as surplus. The product class is marked B (return restricted), which means if you over-order, getting a credit back isn't automatic — Siemens wants you to coordinate returns through your channel partner.
Compliance and substance declarations
RoHS compliant since June 1, 2013. Under REACH, it carries a lead declaration above the 0.1% threshold (CAS 7439-92-1) — standard for many electrical components with solder joints or plated contacts, but worth flagging if your downstream product needs full material disclosure. Export control is straightforward: AL N / ECCN N, no special license required.