Siemens Low Voltage Circuit Protection Panelboard/Switchboard Units. Type VB PANELBOARD UNITS Std UL V. Rating 600V A. Rating 30/60A No. Of Poles 3P F. Rating 60Hz Action SINGLE THROW Mounting INSIDE PANEL BOARD. O. Cycles 10000 O. Temperature (-20F-120F) AMBIENT TEMPERATURE Environmental Conditions INDOOR