Fuse disconnect switch R 303 50 A 3P 606708

Fuse disconnect switch – reliable installation protection

The R 303 insulated fuse disconnect switch is a key element of any electrical installation, providing effective protection against overloads and short circuits. The device is designed to work with D02 fuse links, guaranteeing a quick and reliable response in the event of a failure. The design of the disconnect switch also allows for a visible isolation gap after the fuse link is removed, increasing safety during maintenance and service work.

Functionality and application

This three-pole (3P) disconnect switch with a rated current of 50A is perfect for installations with a voltage of up to 400V. Its compact dimensions – 4.5 module width – make it easy to install even in crowded switchboards. The possibility of direct and plate mounting increases installation flexibility. The device functions as a main disconnect switch, allowing the circuit to be safely disconnected when necessary. The use of a D02 fuse link provides a high short-circuit breaking capacity of up to 50 kA, protecting the installation from serious damage.

Construction and characteristic features

The R 303 disconnect switch is characterized by a solid fixed construction, ensuring long-lasting and reliable operation. Made of high-quality materials, it is resistant to environmental conditions. It has a locking mechanism that prevents accidental opening of the circuit during operation. The connection of the main contacts is made using screw connections, guaranteeing a secure electrical contact. The IP40 degree of protection provides protection against accidental contact and the ingress of solid objects larger than 1mm. Additionally, the device complies with IEC 60947-3 and IEC/EN 60947-1 standards, confirming its safety and quality.