What it is and what it does
The Siemens 5SL4305-7CC is a 3-pole miniature circuit breaker rated 400 V with a 10 kA breaking capacity, C-curve trip characteristic, and a 0.5 A current rating. The C-curve means it trips between 5 and 10 times rated current — standard for protecting general-purpose loads like lighting, control transformers, and small motor circuits where moderate inrush is expected. The 10 kA SCCR at 400 V tells you it can safely interrupt a fault up to that level without upstream damage, which is typical for distribution boards in commercial and light industrial panels.
Sourcing and availability
The product class is B — return restricted, meaning this is a controlled item that must be sourced through Siemens partners or authorized channels. We can quote it to order against an RFQ; availability and current pricing are confirmed at quote time. For volume purchases, the standard unit is 1 piece, packaging quantity 1.