The product wire insulation U7... / G7... / G93 = class F (155 C), A8... = class H (180 C) B... / H8... = class H (200 C) and the protection class U7... / G7... / G93 = IP54 - DIN 40050 IP65 (with a connector Mod. 122-800 and Mod. 122-800EX) A8... / B... = IP54 - DIN 40050 IP65 (with a connector Mod. 124-800) H8... = IP64. The operation ED is 100%. The tolerance V AC Mod. A and U: -15% / +10% Mod. B: +10% while the tolerance V DC Mod. A and U: +10% Mod. B: +5%.