Circuit breaker VL1250N Standard switching capacity Icu=55 kA, 415V AC 3-pole, system protection Overcurrent release ETU20, LSI In=1250 A, Rated current IR=500...1250A, Overload protection, ISD=1.5 to 9xIR, II=10xIN Short-circuit protection without auxiliary release Auxiliary/alarm switch mounting kit 2 AUX (1 NO+1 NC)+1 AS (1 NO)