SIEMENS 52PM9W1K 30 mm Mushroom Push Button 1NO Black

30 mm Mushroom Push Button

The SIEMENS 52PM9W1K is a 30 mm mushroom head push button operator designed for industrial control panels. It provides momentary action with a single normally open contact block for basic start or signal functions. The black plastic head measures 44 mm in diameter and mounts in a standard 30 mm cutout. Panel builders wiring control circuits for machinery or process equipment will find it fits standard enclosures.

Contact rating and environmental limits

The contact block carries a 10A rating at 600V AC with an A600/P600 NEMA designation. The operator meets NEMA type 1, 3, 3R, 4, 4X, 12 and 13 ratings for indoor and outdoor use. IP ratings listed include IP10, IP11, IP14, IP52, IP54, IP56 and IP66, indicating protection against dust and powerful water jets. The pressure-plate terminal accepts solid or stranded wire without special tooling.

Replaces worn or undersized operators

This unit replaces damaged mushroom heads or smaller flush buttons where a larger actuation surface improves operator response. The jump is worth it when an existing 30 mm mounting hole must stay but the application demands IP66 sealing or a 10A contact rating. It is not for circuits requiring normally closed contacts, illuminated heads or maintained action operators.