Chauvin Arnoux E3N Adapter Chauvin Arnoux E3N Adapter for Qualistar and PEL. Features and Benefits • Measurement Range: 50 mA to 10 A ac/dc, 100 mA to 100 A ac/dc • Clamping Ø / Length: 11.8 mm • IEC 61010: 600 V CAT III / 300 V CAT IV