RCCB for 400 V three-phase lines
The Siemens 5SV3342-6KK03 is a SENTRON residual current circuit breaker (RCCB), 4-pole, Type A, rated 25 A with 30 mA trip sensitivity at 400 V AC, covering 50 to 400 Hz supply frequencies.
Short-circuit and coordination headroom
This RCCB carries a 10 kA short-circuit current rating per IEC 61008-1, with a series fuse limit of 80 A maximum permissible. The 0.8 kA rated conditional short-circuit current (IΔn = 30 mA) is the value used for back-up protection coordination with the specified series fuse.
Mounts in any position. Grid spacing of 60 mm matches standard cabinet cutouts. The IP20 rating applies only after the distribution board is installed with connected conductors — treat it as a panel-internal device, not for exposed or wet locations. Silicon-free construction suits coating-sensitive environments like automotive paint lines.