The ABB VFD Model ACS355 with option (+B063) for UL Type 4X (IP66) package is suitable for wash down environments. It is available in 2 Frame sizes (R1 & R3) and horsepower ranges from 0.5 – 5 HP @ 240V to 0.5 – 10HP @ 480V. The hygienic high protection class is for harsh environments where IP20 or IP54 are not adequate. It is also tested & certified to IP69K. The unit is designed for exposure to cleaning chemicals and corrosion resistant environments. The unit is NSF certified (National Sanitary Foundation) and is designed with no external fan and captive stainless hardware.