This Siemens SIRIUS ACT 2-position key switch head in black is the perfect addition to your electrical equipment. The switch uses a fuse type and is designed for industrial use, making it ideal for business and office applications. With its reliable performance, you can trust that this switch will be a valuable asset in your workspace. The brand name, Siemens, guarantees quality and durability. The key switch head is easily identifiable with its black colour and is designed for use with other key switches. This product is ideal for those in need of high-quality electrical equipment and supplies.