Fuse disconnect switch R 303 35 A 3P 606707

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 35A, 3-pole model is designed to work with D02 fuse links, offering comprehensive circuit protection. This device finds wide application in both domestic and industrial installations where high reliability and safety are required.

Construction and mounting

The R 303 is characterized by a solid construction and ease of mounting. The possibility of indirect mounting and mounting on a plate makes it perfectly adaptable to different configurations of distribution boards. Compact dimensions – a width of 4.5 modules – allow for optimal use of space in electrical cabinets. The connection of the main contacts is made using screw connections, which ensures a secure and durable connection of the wires. The built-in locking mechanism further increases safety, preventing accidental opening of the circuit under voltage.

Application and benefits

This disconnect switch is not only a protective element but also an isolating one. After removing the fuse link, it provides a visible insulation gap, which is crucial during maintenance and service work. The rated continuous current of 35A and the switching capacity at 400V of 14 kW guarantee stable operation even under high loads. The short-circuit withstand current Icw at 50 kA provides effective protection in the event of a short circuit. The device meets the standards IEC 60947-3 and IEC/EN 60947-1, which confirms its high quality and compliance with applicable safety standards. This gives installers confidence that they are installing a product that meets all legal and technical requirements. Additionally, the possibility of selective cooperation with overcurrent circuit breakers of the S 300 series allows for precise adaptation of the protection system to the specifics of a given installation.