Siemens Low Voltage Circuit Protection Panelboard/Switchboard Units. Type VB PANELBOARD UNITS Std UL V. Rating 600V A. Rating 800A No. Of Poles 3P F. Rating 60Hz Action SINGLE THROW Mounting INSIDE PANEL BOARD. O. Cycles 3500 O. Temperature (-20F-120F) AMBIENT TEMPERATURE Environmental Conditions INDOOR