This TR80D3R8004TPE is a low voltage power transfer switch used in industrial and commercial buildings, data centers, healthcare facilities and transportation industry. The rated operational voltage(Ue) is 400VAC@50/60Hz. This change source is AC-33B utilization category. The rated current(Ie) can be loaded 800A(Ie) at 60℃, with 800A frame. The front has an inbuilt rotary display module which can be used for local control and setting, controlled by rotary/dip switch. This transfer switch provided 3 contact postion to the front by mechanical and electrical indication. It can be fixed on the plate and position it inside of power distribution cabinet. It also has some optional accessories in terms of different application scene. This version is 467mm(width)x341mm(height)x186mm(depth). It is compliance with standard IEC 60947-6-1, and certified by CE/CB/CCC. It is suitable for power transfer of life safety loads like Fire-fighting equipment, Smoke Extract Fans, Sprinkler pumps,emergency lights etc.