Eaton Bussmann 170M6612 High-Speed Square Body Fuse, 800A, 690V (Pack of 2)

The Eaton Bussmann 170M6612 is a high-speed semiconductor fuse designed for protecting power semiconductors, such as diodes, thyristors, and IGBTs, in industrial applications. Rated at 800A and 690/700V AC, this Class aR fuse offers exceptional short-circuit protection with a breaking capacity of 200kA, ensuring rapid interruption of fault currents to minimize damage to sensitive equipment. It features a square body design with blade terminals for secure mounting and easy integration into fuse holders or switchgear. Key advantages include low power loss (indicated by 0.1132 mΩ cold resistance at 21°C), high reliability in demanding environments like variable frequency drives, UPS systems, and renewable energy inverters, and compliance with standards such as IEC 60269 and UL recognition. Compared to similar products, the 170M series excels in energy efficiency and arc quenching, reducing downtime and maintenance costs. Drawbacks may include higher initial cost versus standard fuses and the need for precise sizing to avoid nuisance tripping. These units are new, unused, and come in original packaging, making them ideal for critical power protection in manufacturing, data centers, and heavy industry. Applications span AC/DC drives, soft starters, and photovoltaic systems, providing superior performance over generic fuses in high-fault scenarios.