Frequency ConverterFC-111P37KT4P20H2XXCXXXSXXXXAXBXCXXXXDXVLT® HVAC Drive FC- 111(P37K) 37 KW / 50 HP, Three phase380 - 480 VAC, IP20 / Chassis BackplateRFI FilterNo brake chopperNo Loc. Cont. PanelCoated PCB, No Mains OptionNo A Option, No B OptionNo C1 option, No D optionFrame: H11