Yueqing Huilong’s RM22TR33 is a specialized thermal overload relay designed for three - phase motor protection with advanced trip characteristics. This relay features a wide current adjustment range (25 - 36A), suitable for large - capacity motors in heavy industry. The RM22TR33 incorporates bimetallic elements that respond to both current and temperature, providing comprehensive protection against overloads, phase failures, and unbalanced currents. It offers both manual and automatic reset options, with a fault indicator (red flag) for visual diagnosis. The relay’s DIN rail - mount design (width 45mm) saves panel space, while the IP20 protection rating ensures operator safety. Meeting IEC 60947 - 4 - 1 standards, this relay is ideal for motors in compressors, fans, and heavy machinery, preventing damage from excessive heat and electrical faults, thus enhancing system reliability and reducing maintenance costs.