NAMEPLATE 30.5 mm Hole Closing Plug (Hole Cap).The primary physical function of this hardware accessory is to securely seal unused pilot device openings on industrial push-button enclosures, operator consoles, and motor control centers.The component is manufactured from a high-impact, oil-resistant gray structural plastic compound that perfectly matches the aesthetics of standard NEMA-rated steel enclosures.It features an integrated circular compression ring and a rear-clamping structural nut that forms a rugged, watertight seal certified for heavy-duty NEMA Type 4 and Type 13 (IP66 oil-tight) environments.By eliminating open gaps, the plug prevents metal shavings, coolant mist, airborne dust, and moisture from breaching the enclosure and shorting out internal active PLCs or contact blocks.Industry Equivalents (Cross-References)The Rockwell Automation 800T-N1 is the active OEM catalog designation, representing the standard single-unit industrial part code distributed globally.The Square D / Schneider Electric 9001K5 serves as a direct 30mm heavy-duty metallic alternative, designed to cap open pilot holes on matching industrial control stations.The Eaton / Cutler-Hammer 10250TM80 is a universally adopted direct alternative that matches the 30.5 mm industrial footprint, providing equivalent oil-tight sealing limits.The Siemens 3SB3921-0AA6 functions as a secondary metric-compatible hole cap option, frequently adapted to isolate empty panel configurations in multi-brand control frames.History of the ComponentThe lineage of this component belongs to the legendary Bulletin 800T family launched by the Allen-Bradley Company, a globally dominant powerhouse in industrial controls acquired by Rockwell Automation in 1985. Introduced in the mid-20th century, the 800T series became the benchmark North American hardware standard for 30.5mm heavy-duty pilot devices due to its rugged metal mountings and oil-tight reliability.During factory line updates or automated machine decommissioning, field engineers frequently add, remove, or relocate control switches, push-buttons, and pilot lights. Rather than forcing facilities to purchase an entirely new sheet-metal enclosure box when a button is removed, Allen-Bradley engineered the modular 800T-N1 plug.Because industrial safety standards require enclosures to maintain their original seal ratings, this simple plastic plug remains a mandatory, active product lines accessory across global electrical codes. Today, it satisfies global manufacturing directives including UL, CUL, CSA, and KC standards.Actual Product Applications (Makes and Models)The Allen-Bradley Bulletin 800T Custom Push-Button Stations integrate these 800T-N1 plugs directly across their multi-hole die-cast aluminum enclosures to cleanly cover spare slots reserved for future system expansion.The Cincinnati Milacron injection molding machine main console panels regularly utilize these closing buttons along their primary operator interfaces to seal empty holes when custom auxiliary hydraulic options are omitted from the build.The Caterpillar industrial generator control enclosures employ these oil-tight plugs across their external switchboards to ensure the main diagnostic electronics remain dry and protected against severe outdoor weather variables.
Related
Related
Related
Related