In complex panels or machines where logic signals need reliable switching, interface relays fulfil a key role. The NOARK relay lineup includes modular types like the Ex9CH20, specified for switching up to 20 A with contact configurations from 1 to 4 poles. These are ideal for building automation, control cabinets and I/O expansion. Important specs include coil voltage (24 V AC/DC vs 230 V AC), contact arrangement, and mounting footprint (DIN-rail or panel). From a procurement perspective: verifying coil voltage compatibility, switching capacity and spare-part continuity ensures you avoid mismatches or rebuilds on site.
When your operation uses multiple machines or assembly cells, uniform spares save time and cost. NOARK modular relays share common mechanical dimensions, accessories and part-family logic. Their design allows for quick replacement, and their datasheets clearly show compatibility across serie In practice, a single relay type across your fleet means fewer SKUs, less training, and faster maintenance. Specification checks should include mechanical module width (e.g., 18 mm per module), number of poles, relay life (cycles) and rated switching current.
Relays in the control layer must meet more than electrical specs—they must support safety, diagnostics and predictable behaviour. NOARK safety relays (e.g., Ex9RCA series) comply with IEC/UL 60947-5-1 Annex L, featuring force-guided contacts, redundancy and clear diagnostics.For engineering teams: ensure the relay supports the intended safety function (e.g., emergency stop loop), has diagnostics for maintenance, and matches the control logic architecture. Ignoring this can lead to non-compliance, longer certification, or unexpected downtime.
When selecting relays for panels or machines, be sure to evaluate:
Industrial integrators who standardised on NOARK relays report measurable outcomes: fewer vendor interfaces, simpler maintenance routines, and fewer mis-fits during commissioning. The consistent design footprint and accessory set across modules reduce risk of incorrect substitutions. Their catalogs emphasize that every component is tested and certified to high standards.
Bank of Lamps offers the full NOARK relay portfolio—interface relays, modular relays, control and safety relays—with European logistics and procurement support.
Consolidated shipping of relays + control gear + wiring to reduce freight costs