This Hager 100 Amp Main Switch Disconnector Isolator 3 Pole Phase SB 399U is a top-quality electrical equipment that is perfect for your business needs. It is designed with a brand name of Siemens and is classified as a disconnector, making it a reliable switch for your circuit breakers and disconnectors. With its 3 poles, this switch is perfect for handling multiple circuits at the same time. It is ideal for use in various industries such as business, office, and industrial settings. This disconnector switch is a must-have for anyone who wants to ensure the safety and efficiency of their electrical equipment and supplies.