Thermal Unit Trip Class 20 Overload Protection Type Melting Alloy Full Load Current 0.61 to 0.65 A 0.62 to 0.66 A 0.64 to 0.68 A 0.65 to 0.68 A 0.66 to 0.71 A 0.68 to 0.72 A 0.68 to 0.73 A 0.7 to 0.76 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