The Yagi-Kripal UKH-220 is a 100–160 A, three-phase thermal overload relay that mounts directly to compatible contactors for motor protection in panels and MCCs. This bimetal-type relay provides motor overload and phase-failure protection with 1 normally open and 1 normally closed auxiliary contact, and supports both manual and automatic reset. It meets GB/T 14048.4 industrial standards and is commonly used in motor starters, pumps, conveyors, and other industrial automation equipment; common replacements include Schneider Electric LRD3363, Siemens 3RU2146-4KB0, and ABB TA200DU-160.
