Molded terminal block provides easy access to terminals Terminals are seperated by barriers to prevent unintentional contact during installation or shorting due to stray conductor strands Rigidly installed terminal protects coils against dust, moisture and solid particles Slotted Roberson head screws provide greater contact surface for conductors Seperate and isolated primary and secondary windings All unites CSA certified, UL Listed, CE verified Open style transformer designed for use with fuse block Operating Frequency: 60 Hz (50Hz avaiable on some models) Insulation: 130 deg c (25-1000 VA) 80 deg c Temp Rise Class B Sound Level: less than 40 db Polarity: Additive