Circuit-breaker vl 400x ul; type lg (cat no. nlx3n600) non-interchangeable frame w. approbation circuit-breaker to ul489 standard switching capacity 3-pole, nema rating 35ka/480v, (molded case circuit breaker) overcurrent release etu, li tu= 40 degr. celsius in= 600a, rated current ii= 1. 25 to 10 x in, short-circuit protection ir= 200-600a overcurrent rel. f. plant protection w/o connection accessories