Frequency Converter FC-101P37KT4P5AH3XAXXXXSXXXXAXBXCXXXXDXVLT® HVAC Drive FC- 101(P37K) 37 KW / 50 HP, Three phase 380 - 480 VAC, IP54 (not TYPE12) w back(H3) RFI Class A1/B (C1) No Brake chopperAlpha Numeric LCPNot coated PCB, No Mains Option No A Option, No B option No C1 option, No D optionFra