4 Each, IEM 2000 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 20 N with LSIG functions. Feeder Breakers include 2 each Type NW 16 N with LSI Functions, 1 each Type NW 16 N with LSIG Functions, and 1 each NW 08 N with LSI functions. The Switchboards are rated Suitable for Use as Service Equipment and also include an overhead circuit breaker hoist assembly. Atlas Electric can customize these Switchboards to suit your application.