Thermal Unit Trip Class 20 Overload Protection Type Melting Alloy Full Load Current 26.4 to 28.2 A 26.9 to 28.4 A 27.9 to 29.8 A 28.2 to 30 A 29.5 to 31.4 A 29.5 to 31.5 A 29.7 to 31.7 A 29.8 to 31.8 A 30.2 to 32.5 A 31.6 to 33.9 A NEMA Size 3 Frame Size CC S