The Legrand 0 406 50 is the main fire safety centralization panel (CMSI Type B) in Legrand's conventional building safety system. Designed for commercial and public building installations, it forms the core control unit of a fire safety system compliant with French SSI (Système de Sécurité Incendie) regulations.

How does the CMSI Type B system architecture work?

The 0 406 50 serves as the main panel, supplying power and control signals to extension panels (ref. 0 406 52) installed directly to its right. The system is expandable from 2 to 8 lines using plug-in modules (ref. 0 406 90, 2 lines each), enabling scalable compartmentalization, smoke extraction damper control, fire door management, and evacuation zone coordination from a single centralized unit.

What standards and approvals does the 0 406 50 carry?

The panel is certified to French fire safety standards NF S 61-934 and NF S 61-935, with a Class II electrical safety rating, IP 30 ingress protection, and IK 07 impact resistance. These certifications confirm suitability for SSI Category B installations in commercial and public-access buildings.

What accessories are required for installation?

The 0 406 50 must be paired with a dedicated battery (ref. 0 407 49, sold separately) to ensure backup power during mains failure. Extension is handled by the 0 406 52 extension panel and 0 406 90 dual-line modules. All components share the same DIN-rail mounting format and uniform enclosure design.