What the 2 mm shielded range means on an M8 body
The XS508B1NAL2 is a shielded M8 inductive proximity sensor from the Schneider XS5 series, with a rated sensing distance of 2 mm on mild steel. Shielded construction means the field is concentrated at the face, so this sensor can be flush-mounted into a metal bracket or block without false triggering on the surrounding material — useful when you're embedding it into a slide or fixture where the barrel passes through a steel mounting plate. The 2 mm range is the nominal distance to a standard mild steel target. For stainless steel, derate the sensing gap; for aluminum or brass, expect roughly half the rated range.
Output wiring and protection
It's a 3-wire NPN normally open output, rated 200 mA maximum load current at 12–24 VDC. The NPN (sinking) output switches the load to ground — common in legacy PLC input cards and some Asian-origin controllers. The sensor packs overload, reverse polarity, and short circuit protection on the output — so a direct short to ground or a swapped supply wire won't kill it at startup. That's the kind of thing that saves a midnight callout.
Environmental rating and cable
Rated IP67 and NEMA 4X, the stainless steel barrel and nickel-plated finish handle washdown and corrosive atmospheres — think food processing wash zones or outdoor conveyor lines. The 2 m prewired cable exits the back with bare wire ends, so you terminate into a junction box or M12 pigtail as needed. The 303 stainless body resists corrosion better than brass in caustic washdowns.
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