This airport low voltage switchgear combines 50 Hz and 400 Hz sections in one lineup. The 400 Hz bus is silver-plated copper with reduced skin-effect geometry to handle 200 A at 115 V for aircraft GPUs. Standard ACBs at 3200 A feed baggage systems, while 100 A MCCBs with contactors switch runway LED circuits in CCR (Constant Current Regulator) mode.