This is a highly durable COMMERCIAL GRADE 230 volt electrical controller box for four 5500 watt elements. Designed for use with 400 – 600 litre kettles. Comes with a lockable on/off switches, temperature control knobs and ammeters. Manufactured in Canada using all North American components. Fully CSA approved and UL listed. Nema 4X encasing. Waterproof and corrosion proof. Comes with a two year warranty.