The 976 nm 300 W Pluggable Fiber Coupled Diode Laser is a high-performance industrial engine engineered for heavy-duty material processing and precision scientific applications. Delivering a massive 300 W of continuous-wave output, this module is optimized for high-intensity tasks like plastic welding and laser soldering. Its standout feature is a pluggable SMA905 fiber interface, allowing for rapid field replacement and maximum system uptime without the need for factory recalibration. Designed for superior energy management, the K976 series achieves an exceptional 50% electrical-to-optical conversion efficiency, significantly reducing the thermal load on integration systems. It comes fully equipped with a 635 nm visible red aiming beam for precise alignment and a rugged industrial housing designed for long-term stability. With a high slope efficiency of 17.6 W/A and a high-brightness 400 µm fiber core, this module represents the pinnacle of reliability for turn-key industrial laser platforms.