219-4-6388-162 is a hydraulic magnetic circuit protector from the 209/219/229 series, designed as a manual motor controller recognized under UL 508. This four-pole unit features common-trip construction with an internal trip bar that opens all poles in the event of an overload in any pole, with handles ganged externally for simultaneous actuation. The circuit protector offers multiple terminal style options including screw terminals (10-32 or 1/4-20), stud terminals, or solderless connectors with front or back connection configurations. With a width dimension of 4.144 inches (105.26 mm) maximum for the four-pole configuration, it combines power switching with accurate, reliable circuit protection. Common applications include branch circuit protection for EDP equipment, air conditioners, panel boards, and lighting controls.