This Cutler Hammer enclosed rotary switch offers a robust and reliable solution for your electrical control needs. Designed for durability and safety, it features a grey, closed enclosure with a black handle for easy operation. Ideal for applications requiring a 3-pole, 30-amp switching capability without a fuse..The Cutler Hammer ER53030UPGB is a 3-pole, 30-amp enclosed rotary switch. It features a grey, closed enclosure and a black handle. This unit is designed for applications requiring 3-pole switching at 30 amps and does not include a fuse.