Alternative supplies can switched on-load. Units are surface mounted and available in 2, 3 and 4 pole versions. On-load changeover switches have a rated voltage of 415V. Switches comply with BS EN 60947-3. Current ratings of 20 – 800A are available. In all cases ample cable space is provided for both incoming and outgoing cables. All handles are insulated. Clear ON (I or 2) and OFF (O) indication is provided. Enclosures are finished in light grey.