The PP21-2-5.00A-OA-S is a push-pull hydraulic-magnetic circuit protector from the SNAPAK® series manufactured by Airpax/Sensata, combining power switching and reliable circuit protection in a single compact package. This two-pole unit features a 5.00A rated current capacity with push-pull actuation and unmarked buttons (OA configuration), eliminating the need for separate power switches, fuses, and fuse holders. The breaker is designed for front snap-in panel mounting with standard panel thickness compatibility and includes a white band visible in the OFF position for clear status indication. The push-pull actuator measures 1.960 ± 0.030 inches in length with a 3/8-32 thread interface, and the unit maintains a recommended center distance of 1.375 inches between panel openings for proper spacing. This configuration is ideal for OEM applications requiring compact panel density, reduced assembly complexity, and reliable overcurrent protection in industrial and commercial equipment.