{"product_id":"allen-bradley-440n-z21s16a-allen-bradley-non-contact-switch-sensaguard-plastic-18mm-barrel-16a","title":"Allen-Bradley 440N-Z21S16A - Allen Bradley Non Contact Switch Sensaguard Plastic 18Mm Barrel, 16A","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cstrong\u003eAllen-Bradley 440N-Z21S16A\u003c\/strong\u003e is a non-contact safety switch from the Sensaguard line, built in a compact plastic 18mm barrel for versatile mounting in demanding industrial environments. This device delivers reliable, wear-free sensing without the mechanical contact that wear‑limits traditional interlocks, making it a smart choice for long-term safety circuits in busy facilities.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eNon-contact safety sensing\u003c\/strong\u003e reduces moving-part wear and maintenance needs while delivering dependable safety interlock performance in guarded equipment.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e18mm plastic barrel\u003c\/strong\u003e offers a slim, adaptable footprint for compact panel layouts and easy retrofits in existing installations.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e16A switching capacity\u003c\/strong\u003e supports typical control circuits in industrial panels, machinery, and automation systems, enabling straightforward integration without overloading the circuit.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eIndustrial-grade reliability\u003c\/strong\u003e designed to perform in the rigors of manufacturing plants, process equipment environments, and retrofit projects where proven Allen-Bradley components are preferred.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile applications\u003c\/strong\u003e ideal for control panels, machinery safeguarding, and safety upgrades across commercial facilities and industrial automation setups.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eEasy sourcing for maintenance and upgrades\u003c\/strong\u003e part numbers like 440N-Z21S16A are favored for replacement and spare-part strategies, helping keep critical lines running with compatible, hard-to-find Allen-Bradley parts.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eThis model is especially well-suited for maintenance, repair, and upgrade projects where a compatible, non‑contact Sensaguard solution is required to modernize guarding systems without major rework. Use it to upgrade aging safety interlocks in control panels or retrofit new safety logic into existing machinery—delivering safer operation with a streamlined installation that aligns with industrial automation standards.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eKey details at a glance\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eBrand: Allen-Bradley\u003c\/li\u003e \u003cli\u003eModel: 440N-Z21S16A\u003c\/li\u003e \u003cli\u003eType: Non-Contact Switch Sensaguard\u003c\/li\u003e \u003cli\u003eBarrel: Plastic 18mm\u003c\/li\u003e \u003cli\u003eAmperage: 16A\u003c\/li\u003e \u003cli\u003eApplications: Control panels, machinery, and industrial automation systems\u003c\/li\u003e \u003cli\u003eTypical use: Industrial plants, commercial facilities, process equipment, retrofit projects\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWhether you’re refreshing a fleet of machines, upgrading safety guarding, or stocking up for planned maintenance, the Allen-Bradley 440N-Z21S16A delivers a dependable, long‑lasting non-contact solution that aligns with established safety practices and supports efficient, downtime-conscious operation.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Allen-Bradley","offers":[{"title":"Default","offer_id":46394789986466,"sku":"440N-Z21S16A","price":485.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_70ead8a1-5858-4c6b-b684-851be1b01d27.png?v=1765492558","url":"https:\/\/www.ampstate.com\/products\/allen-bradley-440n-z21s16a-allen-bradley-non-contact-switch-sensaguard-plastic-18mm-barrel-16a","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}