Square D™ Thermal Unit, Melting Alloy, 600 VAC, 0.005 to 6 A, 45 to 65 Hz Frequency, 5 VA Power, 6.83 to 9 A Full Load, Class 20/Standard Trip, 3.78 in L x 3.78 in W x 2.78 in D Size, Plug-In Mounting, 40 deg C