Fuse combination unit, Acti9 SBI, 3P+N, 50A, cartridge size 14 x 51 mm, SBI-50-3N A9GSB750

Safe and reliable circuit protection with Acti9 SBI fuse base

The Acti9 SBI fuse base is a key element ensuring effective protection of electrical installations. Designed to work with 14 x 51 mm fuse links, it is a solid solution for both installers and end-users. It provides safe disconnection of circuits in the event of overloads and short circuits, minimizing the risk of damage and fires.

Construction and mounting

Mounting is done on a standard DIN rail, which simplifies and speeds up installation. The compact width of 6 modules allows for efficient use of space in the distribution board. An optical trip indicator allows for quick identification of a blown fuse, which greatly facilitates diagnostics and repair. Made of high-quality materials, it guarantees long-lasting and trouble-free operation.

Application and parameters

The SBI-50-3N fuse base is three-pole (3P) with an additional neutral pole (N), making it ideal for protecting single-phase circuits with three-phase loads or requiring neutral disconnection. The rated current of 50A allows for the protection of circuits with medium loads. The rated voltage of up to 690V makes the device universal and can be used in various types of electrical installations. The degree of protection IP20 provides protection against touching with fingers, but does not protect against the influence of water or dust - therefore, the device should be mounted in a distribution board enclosure.

The device is characterized by several key parameters: the rated current is 50A, the rated voltage reaches up to 690V, and the configuration includes 3 poles plus a neutral pole (3P+N). It is adapted to work with fuse links with dimensions of 14 x 51 mm. Mounting is carried out on a DIN rail, and the width of the device is 6 modules. The installation depth is 50.5 mm, and the degree of protection is IP20.

The device complies with the IEC EN 60947-3 standard, which confirms its safety and reliability. This is a solid choice for anyone looking for effective protection of their electrical installations.