A SIRIUS position switch sized for the cam, not the cabinet
The Siemens 3SE5413-0CD20-1EA2 is a SIRIUS mechanical position switch built around a roller plunger head, 1 NC and 1 NO snap-action contact pair, and a positive-opening mechanism rated for safety switch duty — so the actuator breaks the NC contact by mechanical force, not just by spring return, which is what IEC 60947-5-1 requires for a guard interlock (cite:; cite:; cite:; cite:; cite:). The block-format metal housing carries an IP67 sealing rating, meaning the switch tolerates immersion to 1 m for 30 minutes when properly mounted at the gland, so it sits comfortably on washdown skids, conveyor frames, and outdoor machine guards where dust and water are constant (cite:; cite:; cite:). The headline number that decides fit on a positioning or end-of-stroke job is 0.05 mm repeat accuracy — that is the spread the roller plunger will hit the same target over repeated cam passes, and on a precision stop or a packaging-indexing station it is what keeps reject rates flat as the line wears in (cite:; cite:; cite:).
Electrical envelope and what 10 A thermal really covers
The 400 V insulation voltage and 4 kV surge voltage resistance rated value confirm the clearances and creepage distances for industrial control-panel environments at pollution degree 3 (cite:; cite:; cite:). Connection is a 5 x 0.75 mm² PVC-jacketed cable, not a plug or connector — the cable exits the housing through the gland and is the wet-end path, so specify cable flexing radius and any cable-carrier routing for the moving guard before the BOM closes (cite:; cite:).
Environmental and mechanical survivability
Operating and storage temperature both span -25 to +85 °C, which covers unheated warehouses, outdoor cabinets in temperate climates, and the cabinet interior of a panel that sits near a motor or VFD (cite:; cite:). The 30 g / 11 ms shock rating per IEC 60068-2-27 tells you the switch survives a direct mechanical impact event — relevant on press lines, stamping cells, and any cam-driven actuator that can whip the plunger (cite:). Mounting is screw fixing in any position, and the 30 x 70 mm footprint lands in the standard SIRIUS mechanical-switch envelope — the same drill pattern as the rest of the 3SE54 block family, so a swap on an existing bracket is mechanical only (cite:; cite:; cite:; cite:). The roller-plunger head with a stainless steel switch-head enclosure resists the cam-side wear that beats a plain plunger to death over a million cycles (cite:; cite:).