Noark Electric Lighting Distribution Board

The Noark Electric Lighting Distribution Board is an IEC 61439-3 type application panel optimised for final lighting distribution in commercial, hospitality, healthcare and light industrial projects. It combines Noark Ex9 series moulded-case circuit breakers (MCCBs/MCBs), Ex9C contactors and modular protection devices (MCBs, RCBOs, RCCBs) with standard panel engineering practices—segregated busbar compartments, dedicated outgoing circuit segregation and certified Type 2 surge protection devices. Typical panel ratings are up to 400 A incoming with 12–72 outgoing ways, IP31–IP42 enclosures and outgoing protection sized per IEC 60947-2 and IEC 61439 verification requirements. Ex9 products offer thermal-magnetic and electronic trip options to enable overload protection, adjustable long-time/short-time or instantaneous protection and are suitable as compact, competitively priced alternatives to established line-ups such as SIVACON (Siemens), MNS (ABB) or PrismaSet (Schneider Electric) in lighting distribution roles. Engineering considerations include form of separation selection (Form 1, 2a/2b, 3a/3b, 4a/4b per IEC 61439-1) to ensure touch protection and ease of maintenance, and segregation of emergency/central battery lighting circuits onto a dedicated busbar or separate compartment to meet emergency code requirements. Short-circuit withstand (Icw) and breaking capacity (Icu/Ics) are verified per IEC 61439-1/2: prospective fault currents at the board incoming and at critical outgoing feeders must be established and matched to Ex9 frame breaking capacities (typical manufacturer ratings span nominal breaking capacities depending on frame and trip units; verify product data sheet for project-specific Icu/Ics values). Coordination and selectivity are achieved by matching Ex9 trip characteristics to upstream devices (MCCBs in switchboards such as SIVACON, MNS, PrismaSet) and using time-current curve analysis to maintain selectivity between distribution stages. Control and automation options include Ex9C contactors to implement central switching, DALI or KNX interface modules for scene control and addressable emergency lamp monitoring. For sites with transient overvoltage exposure, Type 2 SPDs rated per IEC 61643-11 are housed in the panel with coordinated upstream protection. For hazardous area proximity, mechanical and electrical design conforms with IEC 60079 where required, and switchgear selection aligns to IEC 60947 series standards. Noark components integrated into an IEC 61439 lighting distribution board provide a cost-effective, certified solution for fast-track projects while enabling rigorous verification, discrimination and serviceability expected by electrical engineers, panel builders, EPC contractors and facility managers. For application-specific layouts, busbar sizing, short-circuit verification and selective coordination studies, consult detailed Noark product datasheets and the panel manufacturer’s IEC 61439 conformity documentation.