The AP17-1-62-252 is a fully sealed magnetic circuit protector designed for accurate, reliable circuit protection with inverse time delay characteristics. This single-pole series unit with auxiliary switch operates at 50/60 Hz with a long time delay (-62) and is rated for 2.5 A nominal current, featuring an auxiliary switch rated at 3.0 A @ 120 VAC / 50 VDC. The protector combines power switching with trip-free operation and maintains consistent trip current across a wide temperature span, unlike thermal circuit protectors. It is available with soldering terminals (R type) or cane hook terminals (RC type) and is designed for panel mounting with a three-point rugged mount. Common applications include aircraft electrical systems, industrial control circuits, and other environments requiring precise, temperature-independent circuit protection with delayed response to transient overcurrents.