The R21-61F-2.50A-B02IV-V is a single-pole hydraulic-magnetic circuit protector from the SNAPAK® series manufactured by Airpax, combining power switching and circuit protection functions in one integrated package. This device features a toggle paddle handle actuator available in multiple colors (blue, white, red, green, yellow, or black) with a 15° operating angle, rated for 2.50A continuous current. The unit employs snap-in front mounting design with dimensional specifications including a 1.375-inch height and 0.680-inch width for the paddle handle, and accommodates panel thicknesses of 0.062 to 0.125 inches. The circuit protector is engineered for reliable on-off switching with accurate fault protection, eliminating the need for separate fuses and fuse holders. Common applications include power distribution panels, industrial control systems, and equipment requiring compact, integrated circuit protection with manual control.