77030-00000050-01 is a 5000 series extended duty pressure switch with direct action blade contact and metri-pack terminal. It is specifically designed to stand up to extended duty applications. This switch is factory set but capable of field adjustment. It features a polyimide film diaphragm for compatibility with a wide variety of fluids, and various terminations including a Metri-Pack connector that forms a tight seal when connected. Among the outstanding design benefit is its durable construction, compact size, and enhanced set point integrity.