Thermal Unit Trip Class 20 Overload Protection Type Melting Alloy Full Load Current 0.8 to 0.88 A 0.81 to 0.9 A 0.84 to 0.93 A 0.85 to 0.93 A 0.86 to 0.96 A 0.87 to 0.96 A 0.89 to 0.97 A 0.9 to 0.98 A 0.92 to 1.01 A Frame Size A S Compatible with Grainger Part Number 1H385 1H386 1H387 1H388 1H389 1H39 1H392 1H393 2BV58 2BV66 2BV67 2BV71 2BV72 48P274 48P276 48P277