" Square D (Schneider Electric) B1.45 Overload Relay. Square D™ Thermal Unit, Melting Alloy, 0.95 to 445 A Full Load, Standard Trip, 4.8 in L x 3.5 in W x 0.8 in H, Plug-In Mount, 40 deg C. Additional Description: SQD -B1.45 THERMAL UNIT. Catalog Description: Square D,THERMAL UNIT,40C ambient rated,600VAC,Dependant on overload relay,For use in melting alloy thermal overload relays,Manual,NEMA Overload relays,Schneider Electric,Standard Trip- Class 46,Thermal - Melting Alloy Thermal Unit."