The AP12-1RC-64-302 is a fully sealed magnetic circuit protector from the Airpax AP/MIL series designed for DC circuit applications with short time delay protection. This single-pole unit features RC-type soldering terminals (cane hooks) and combines power switching with accurate, reliable circuit protection and inverse time delay characteristics. The protector has an auxiliary switch rating of 3.0 amps at 120 VAC / 50 VDC and weighs approximately 1.8 ounces (49 grams) per pole. Unlike thermal circuit protectors, the AP series maintains consistent trip current performance across a wide temperature span, making it ideal for aerospace, military, and industrial applications requiring dependable overload and short-circuit protection with trip-free operation.