Thermal Unit Trip Class 20 Overload Protection Type Melting Alloy Full Load Current 6.8 to 7 A 6.83 to 7.27 A 7.19 to 7.7 A 7.58 to 8.15 A 7.7 to 8.24 A 7.81 to 9 A 8.16 to 9 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