The Littelfuse 6 / 36V Master Disconnect Rotary Switch is a reliable and durable switch designed to provide a secure connection for your electrical system. This switch features a strong and rugged steel casing with contacts that are silver plated for high conductivity and low contact resistance. It also includes a Hencol security key that is removable for added security. An anti-rotation locator pin option makes attaching the switch simple and easy. Alternatives for O-ring and gasket sealing are also available for added protection. FleetPride is your First Click in Heavy Duty®.