0 is an extremely compact, low cost rackmount power distribution system ideal for touring PA systems, touring musical and theatrical acts, mobile recording facilities, on-location film and video shoots, etc. – any situation where AC power must be distributed to. The ASD-120 2. Ideal for theaters, stadiums, house of worship, venues, broadcast, recording studios, and on-location film or video. - Fully insulated heavy-duty molded rubber enclosure with HDPE top and bottom provides superior impact, weather, chemical and shock resistance - Tested and passed MIL-STD-810F for: - Hydraulic-magnetic circuit breakers prevent nuisance tripping due to high ambient temperatures - Units can be. Get free shipping on qualified 120/240 Breaker Boxes products or Buy Online Pick Up in Store today in the Electrical Department. Class II distribution box is the distribution box, also known as sub box, which is generally responsible for a power supply area. Main circuit: main isolation + main circuit fuse or circuit breaker; shunt: shunt isolation + shunt fuse or circuit breaker. What we can do ? different country different. I'm highly specialized in the design of LV/MV switchgear and low-voltage, high-power busbar trunking (<6300A) in substations, commercial buildings and industry facilities. I'm also a professional in AutoCAD programming.