{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"XU9N18NP341WD","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"XU9N18NP341WD","canonicalUrl":"https://aoctrl.com/schneider/XU9N18NP341WD","factsUrl":"https://aoctrl.com/api/mcp/products/XU9N18NP341WD","rawCanonicalId":null},"summary":{"shortDescription":"Square D / Telemecanique XU9N18NP341WD polarized retroreflective photoelectric sensor, 18 mm stainless steel barrel, 2 m sensing range, 12-24 VDC NPN NO/NC output, NEMA 4X/12 IP67 enclosure, UL/CSA/CE approved.","salesMarkdown":"The Square D / Telemecanique XU9N18NP341WD is an 18 mm tubular photoelectric sensor in the XU9 line, polarized retroreflective class, paired with a reflector to detect objects at up to 2 m along the optical axis. It runs on 12 to 24 VDC, switches a 100 mA load through a 3-wire NPN output that can be wired either normally open or normally closed, and exposes the state on a yellow output LED. The stainless steel barrel carries a 4-pin micro connector on the back, threads straight into a standard 18 mm through-hole, and is rated NEMA 4X/12 with an IP67 seal — which is the envelope that lets it sit in washdown, outdoor, or food-adjacent skids without a separate shroud. Sensing distance is 2 m, with the beam exiting at a 90 deg side look — so the reflector mounts perpendicular to the sensor body, not in line with the cable exit, which keeps the cordset out of the optical path on a conveyor frame. Response time is 1 ms on and off, with a 500 Hz operating frequency, so the sensor can resolve objects on lines running well under typical conveyor indexing speeds without aliasing. Operating temperature spans -13 to 131 DEG F, covering cold-storage docks and most washdown ambient without derating; load current is capped at 100 MILLIAMPERE, which is the figure that decides whether it drives a relay coil directly or has to feed a PLC input card instead. Approvals on the rating plate are UL, CSA, and CE, so the same part ships into North American and European panels without a separate compliance review. ## Use class and where it lands in a panel Polarized retroreflective tubular sensors of this class are used to detect bottles, cartons, totes, and printed web at case-packers, labelers, and pallet exits, where the retroreflector doubles as the far-side reference and ignores small specular reflections from shrink-wrap or polished metal that would confuse a standard retroreflective pair. The light/dark operating mode is selectable on the body, so the same SKU covers both presence and absence logic at commissioning without a re-order. ## Same-class peers and the actual decision they drive The closest same-form-factor siblings are the XUB9BPAWM12 (PNP, normally open) and XUB9BPBWM12 (PNP, normally closed) — same 18 mm barrel, same 2 m polarized retroreflective range, same 1 ms response and 500 Hz frequency, but PNP sourcing outputs and a nickel-plated brass housing rather than stainless steel. The XU9N18NP341WD does not drop into a panel specified around a PNP sensor without rewiring: NPN sinks current into a load tied to the positive rail, PNP sources current into a load tied to ground, and the PLC input card or relay common on the original drawing will not match. For a washdown or outdoor skid that needed the stainless body in the first place, a PNP swap also means giving up the corrosion resistance — the housing material is part of the original spec, not a styling choice. ## Sourcing posture and lifecycle Lifecycle is recorded as current, so the XU9N18NP341WD is ordered through the standard Telemecanique/Square D channel against an RFQ, with the 4-pin micro M12 cordset specified separately on the BOM line. Approval marking on the rating plate covers UL, CSA, and CE, which is the documentation pack a supplier-quality reviewer will want to see on first article.","metaTitle":"Square D XU9N18NP341WD Photoelectric Sensor, 2 m, NPN","metaDescription":"Square D XU9N18NP341WD polarized retroreflective photoelectric sensor, 2 m range, 12-24 VDC NPN, stainless steel 18 mm barrel, NEMA 4X/12 IP67. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Photoelectric Sensors"],"specifications":{"UPC":"78590185379","Type":"POLARIZED RETROREFLECTIVE","Model":"XU9","title":"XU9N18NP341WD","Approval":"UL, CSA, CE","Category":"Photoelectric Sensors","Material":"STAINLESS STEEL","Enclosure":"NEMA 4X/12, IP67","description":"SQUARE D XU9N18NP341WD: PHOTOELECTRIC SENSOR 18MM SS NPN","Construction":"THREADED","Load Current":"100 MILLIAMPERE","Sub-Category":"Tubular Reflex/Reflective Photoelectric Sensor","UPC 12 Digit":"389110853790","Response Time":"1 MILLISECOND (ON/OFF)","Operating Mode":"LIGHT/DARK","Barrel Diameter":"18 MM","Connection Type":"4 PIN MICRO CONNECTOR","Number of Wires":"3","lifecycle_stage":"current","Sensing Distance":"2 M","Sensing Position":"90 DEG SIDE","Operating Voltage":"12 TO 24 VDC","Manufacturer Brand":"Square D Co.","Product Description":"Telemecanique XU9N18NP341WD Photo-Electric Sensor 18Mm Ss Npn","Output Configuration":"NO/NC, NPN","Operating Temperature":"-13 TO 131 DEG F","Additional Information":"LED INDICATOR COLOR YELLOW (OUTPUT); OPERATING FREQUENCY 500 HZ","Full Technical Description":"Polarized Retroreflective Type; Stainless Steel Material; 4 Pin Micro Connector Connection Type; 3 Wire(S); UL, CSA, CE Approval; 12 to 24 VDC Operating Voltage; NEMA 4X/12, IP67 Enclosure; Threaded Construction; -13 to 131 Deg F Operating Temperature; NO/NC, NPN Output Configuration; 2 M Sensing Distance; 1 Millisecond (On/Off) Response Time; 90 Deg Side Sensing Position; Light/Dark Operating Mode; 100 Milliampere Load Current; 18 mm Barrel Diameter; LED Indicator Color Yellow (Output); Operating Frequency 500 Hz; XU9 Model","Proposition 65 Warning (CA)":"WARNING: This product can expose you to chemicals including: Diisononyl phthalate (DINP), which is known to the State of California to cause cancer, and Di-isodecyl phthalate (DIDP), which is known to the State of California to cause birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$166.09","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/35ddcd990da2d90942179a92a94d176f.pdf","sourceUrl":null},"ai":{"faq":[{"question":"When sourcing XU9N18NP341WD, what is the closest functional second source?","answer":"The same-form-factor same-function peers are XUB9BPAWM12 (PNP, NO) and XUB9BPBWM12 (PNP, NC) — but they are PNP sourcing outputs in a nickel-plated brass body, not NPN in stainless steel, so they are not a wiring-drop-in for an NPN panel."},{"question":"Will XU9N18NP341WD drop into a panel specified around XUB9BPAWM12 without rewiring?","answer":"No. The XUB9BPAWM12 is PNP sourcing; the XU9N18NP341WD is NPN sinking. The PLC input card common and the load wiring both have to be revisited, and the housing material changes from nickel-plated brass to stainless steel."},{"question":"What type and sensing distance is XU9N18NP341WD?","answer":"It is a polarized retroreflective sensor with a 2 m sensing range, 90 deg side look, and light/dark operating mode."},{"question":"What compliance documentation does this brand provide for XU9N18NP341WD?","answer":"The rating plate carries UL, CSA, and CE approvals, which is the documentation pack the supplier-quality reviewer will want on first article."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/XU9N18NP341WD","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/schneider/XU9N18NP341WD when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}