{"product_id":"allen-bradley-440n-z21s16b-pre-owned-allen-bradley-b-sensaguard-15mm-interlock-switch","title":"Allen-Bradley 440N-Z21S16B - Pre-Owned Allen Bradley \/B Sensaguard 15Mm Interlock Switch","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Allen-Bradley 440N-Z21S16B — a pre-owned Allen-Bradley \/B Sensaguard 15mm Interlock Switch engineered for reliability in demanding control panels, machinery, and industrial automation systems. This unit brings trusted safety interlock technology to retrofit, repair, and upgrade projects, delivering dependable performance where safety and uptime matter most.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eWhy engineers choose the 440N-Z21S16B\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003ePrecisely 15mm interlock design\u003c\/strong\u003e tailored for guard doors and access panels common in industrial equipment, helping prevent unintended restarts and supporting compliant safety circuits.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePre-owned value\u003c\/strong\u003e—a cost-effective option that maintains compatibility with existing Allen-Bradley safety networks and control architectures.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eProven compatibility\u003c\/strong\u003e with a wide range of control panels, machinery, and industrial automation systems, making it a reliable upgrade or spare for legacy installations.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eDurable, industry-grade construction\u003c\/strong\u003e built to withstand the rigors of busy plants, process equipment areas, and retrofit environments.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eIdeal use cases\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eMaintenance and repair projects where a compatible Allen-Bradley component is required to minimize downtime.\u003c\/li\u003e \u003cli\u003eRetrofit initiatives in control panels and machinery that rely on Sensaguard 15mm interlock functionality for safeguarding access.\u003c\/li\u003e \u003cli\u003eReplacement parts for industrial plants and commercial facilities upgrading aging safety interlocks without redesigning safety logic.\u003c\/li\u003e \u003cli\u003eProcess equipment installations and retrofit work in retrofit projects that demand off-the-shelf, compatible safety interlocks.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eWhat you gain with this unit\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eDirect compatibility with existing safety circuits and panel wiring, reducing integration risk during upgrades.\u003c\/li\u003e \u003cli\u003eConsistent performance in challenging environments where reliable interlock operation is critical to safeguarding personnel and equipment.\u003c\/li\u003e \u003cli\u003eA practical path to keeping older systems in service, extending the life of your control panels and automation assets.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003ePractical installation and care notes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eEnsure mounting and actuator alignment match your panel’s safety doors and guard configuration for optimal engagement.\u003c\/li\u003e \u003cli\u003eVerify electrical compatibility with your safety relays and interlock wiring schema before integration.\u003c\/li\u003e \u003cli\u003eFollow standard safety procedures during installation and testing to confirm proper interlock operation and restart protection.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWhether you’re maintaining an aging facility, upgrading a retrofit project, or stocking spare parts for critical downtime windows, the Allen-Bradley 440N-Z21S16B offers a dependable, cost-conscious path to preserving safety interlock performance. Add this pre-owned Sensaguard 15mm interlock switch to your procurement list and keep control panels and machinery operating with confidence.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Allen-Bradley","offers":[{"title":"Default","offer_id":46394798375074,"sku":"440N-Z21S16B","price":477.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_8d19636e-534d-4009-b4a7-6a472fabda41.png?v=1765492734","url":"https:\/\/www.ampstate.com\/products\/allen-bradley-440n-z21s16b-pre-owned-allen-bradley-b-sensaguard-15mm-interlock-switch","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}