IALHK11-39187-20 is a two-pole hydraulic magnetic circuit protector manufactured by Airpax/Sensata Technologies, designed for reliable circuit protection and power switching in international applications. The unit features a rocker-style handle with integral mounting, available in multiple colors (black, white, red, grey, orange), and supports both vertical and horizontal panel mounting configurations. It accommodates various voltage ratings from 65V DC to 480V AC/50-60Hz, with current ratings ranging from 10A to 100A depending on configuration, and offers multiple delay characteristics (short delay, long delay, motor start, and instant trip options) to meet diverse application requirements. The protector includes screw or stud terminal options with standard hardware (flatwashers, lockwashers, and hex nuts), and can be configured with auxiliary switches for mixing SELV and hazardous voltages. Common applications include industrial equipment protection, motor control circuits, and power distribution systems where accurate circuit control and compliance with international standards are essential.