What it is and where it fits
The Siemens 5SL6314-7CC is a 3-pole miniature circuit breaker from the Basic Devices series, rated 0.3 A with a C-curve trip characteristic at 400 V and a 6 kA breaking capacity. It snaps onto DIN rail in a standard distribution board or sub-panel, protecting a 0.3 A load branch against overcurrent and short circuit.
What the ratings mean for fit
The C-curve means the magnetic trip operates at 5 to 10 times rated current — suited for moderate inrush loads like small contactors or control transformers. The 6 kA breaking capacity at 400 V is the maximum fault current the breaker can safely interrupt without welding contacts or cascading damage upstream; it matches the typical prospective short-circuit current on a residential or light commercial panel. The 0.3 A rating is unusually low — it protects a lightly loaded branch, not a motor or general-purpose circuit.
Sourcing posture
This breaker is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time. Because it is a current-production Siemens Basic Devices part, lead times are typically standard for the series — no last-time-buy or surplus-channel risk.