Melting Alloy Thermal Unit, Class 20 Standard Trip, Type A, 7.19 - 7.8 A (1 Thermal Unit), 6.9 - 7 A (2 Thermal Unit), 6.44 - 6.79 A (3 Thermal Unit) Full Load, 40 deg C Operating, Plug-In Mount, 2.6 in L x 1.7 in W x 3.5 in H