Siemens / 3VL4740-1EM46-....
CIRCUIT-BREAKER VL 400N STANDARD BREAKING CAPACITY ICU= 55KA, 415V AC 4 POLE, LINE PROTECTION OVERCURRENT RELEASE TM, LI IN= 400A, RATED CURRENT IR= 320...400A, OVERLOAD II= 2000...4000A, SHORT-CIRCUIT N PROTECTED (100%)