The T21-2-15.0A-01-11A-V is a SNAPAK® series hydraulic-magnetic circuit protector manufactured by Airpax/Sensata, combining power switching and circuit protection functions in a single compact unit. This two-pole device features a paddle handle with black color (-01), rated for 15.0A continuous current, and incorporates fast delay characteristics suitable for DC and 50/60 Hz applications. The unit employs a snap-acting hydraulic-magnetic mechanism that provides accurate and reliable overcurrent protection while eliminating the need for separate fuses and fuse holders. The recommended panel opening center distance for T21 breaker type is 1.375 inches (34.93 mm), and the device operates with trip time characteristics ranging from 0.3 to 7 seconds at 135% of rated current in fast delay mode. This circuit protector is ideal for aerospace, industrial control, and power distribution applications where reliable overcurrent protection and compact integration are essential.