Circuit-breaker vl 400x ul; type lg (cat no. llx3u600) non-interchangeable frame w. approbation circuit-breaker to ul489 very high switching capacity 3-pole, nema rating 100ka/480v, (molded case circuit breaker) overcurrent release etu, lsig tu= 40 degr. celsius 3 phases/4 cables in= 600a, rated current isd=1. 5 to 9 x ir, ii=10 x in short-circuit protection ir= 200-600a overcurrent rel. f. plant protection w/o connection accessories