The PR21-2-.500A-XX-V is a two-pole push-to-reset hydraulic-magnetic circuit protector from the SNAPAK® series, combining power switching and reliable circuit protection in a single compact package. This device features a 0.500 A rated current capacity and is designed for panel mounting with a recommended center distance of 1.375 inches [34.93 mm] between adjacent breaker openings. The push-to-reset actuator provides manual control with a flush OFF position and ON engagement, while the two-pole configuration allows simultaneous switching of both poles. The unit is constructed with UL and CSA-compliant design standards and includes optional hardware such as panel nuts and screw terminal adapters. Common applications include power distribution, load protection, and circuit isolation in industrial control panels and electrical systems where reliable, accurate protection is required.