Eaton QA1633B4806 - The Pringle Bolted Pressure Switches by Eaton are highly regarded in the electrical industry for their exceptional quality and long-standing presence since 1891. These custom-built switches are widely used for heavy-duty applications and are a standard choice for high-current switching worldwide, including UL 891 switchboards. With bolted pressure contacts and a unique spring mechanism using concave-convex washers, these switches ensure secure and efficient current conduction, offering reliability and ease of operation. They are available in various configurations, amperage ratings, and optional features, making them versatile and suitable for diverse industrial and commercial applications.