Fault-clearing ceiling for IEC panel coordination
The 3VA1116-3EF42-0AA0-ZD00: For a 415V distribution board fed by a 1 MVA transformer (typical fault level ~20 kA), this breaker sits inside the available fault current with headroom for selectivity with upstream devices. That range covers motor feeders, lighting panels, or general distribution where the load current is known and the inrush is moderate. Four-pole configuration with the neutral unprotected — the N pole does not have its own trip element, so it tracks the phase poles mechanically.