ABB T16-4.2 Thermal Overload Relay

ABB T16-4.2 Thermal Overload Relay (part number 1SAZ711201R1035) is an economical electromechanical protection device for the main motor circuit. It provides adjustable current protection with a setting range of 3.10 to 4.20 A per pole and a resistance per pole of 0.102 mΩ, balancing protection sensitivity with energy efficiency. The relay delivers 1.1 to 2.0 W of power loss per pole and coordinates with short-circuit protection devices of type 2 using 20 A gG-type protection, making it suitable for standard motor protection schemes in industrial control panels. By guarding against overload conditions, it helps prevent motor damage and unplanned downtime in electrical distribution systems.