Mersen R166 fuse reducer, also known as the Ferraz Shawmut R166, is a high-quality electrical component designed to securely hold and reduce fuses. With a maximum amperage of 100A and a voltage rating of 600V, this fuse reducer is suitable for various industrial and commercial applications. Made by Mersen-Ferraz in the United States, this durable and reliable product is a crucial component for ensuring electrical safety and efficiency in your electrical setup. With its ferrazinc base material and patented design, the Mersen R166 fuse reducer provides peace of mind for your electrical system.