6 each, IEM 3000 Amp Main Breaker Switchboards, 480Y/277 Volt, 3 Phase 4 Wire, 60 Hz, 65 KA. All Circuit Breakers are Square D Masterpact M/O D/O Insulated Case. The Main is Type NW 30 N with LSIG Functions Feeder Breakers include an assortment of Type NW 16 N with LSI functions, Type NW 16 N with LSIG functions, and NW 08 N with LSI functions. The Switchboards also includes an overhead circuit breaker hoist assembly. Atlas Electric can customize these Switchboards to suit your application.