The Siemens 5SL6314-8CC is a 3-pole miniature circuit breaker rated for 400 V with a 6 kA breaking capacity, D tripping characteristic, and a 0.3 A current rating. The D-curve means it tolerates the high inrush currents typical of motor and transformer loads — expect magnetic trip between 10× and 20× rated current, so it won't nuisance-trip on a small motor start.
Lifecycle and Sourcing
Product class B indicates restricted return — coordinate with your Siemens partner before any RMA. The part is quoted to order against an RFQ; availability and current pricing are confirmed at quote time.
Application Context
This MCB snaps onto standard DIN rail in a distribution board or control panel. The 6 kA breaking capacity at 400 V is sized for residential and light commercial sub-distribution — verify the prospective short-circuit current at the installation point stays within that limit. The 0.3 A rating is unusual; it suits lightly loaded control circuits or transformer primaries where a standard 1 A or 2 A breaker would be oversized.