{"product_id":"allen-bradley-440n-z21ss2hn-guardmaster-sensaguard-non-contact-safety-interlock-switch","title":"Allen-Bradley 440N-Z21SS2HN Guardmaster SensaGuard Non-Contact Safety Interlock Switch","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eAllen-Bradley 440N-Z21SS2HN\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003efunctions as a high-integrity safety solution within the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eSensaGuard\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003enon-contact interlock family. This switch utilizes advanced Radio Frequency Identification (RFID) technology to monitor the position of machine guards without physical contact. We supply this unit as\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e100% Brand New\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eoriginal factory stock, ensuring your safety circuits achieve Category 4\/PLe ratings (ISO 13849-1) for high-risk industrial applications.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003ctd\u003e\u003cstrong\u003eFeature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eManufacturer\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eAllen-Bradley \/ Rockwell Automation\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eProduct Line\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eGuardmaster SensaGuard\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eActuator Type\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eRectangular Plastic Actuator\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eSensing Distance\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e18 mm (0.71 in.)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eCode Type\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eStandard Code\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eConnection Type\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e6-inch Pigtail with 8-Pin Micro (M12) Connector\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eInput Voltage\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e24V DC (+10% \/ -15%)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eCurrent Consumption\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e50 mA\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eDiagnostic Indicators\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eIntegrated LED for Door Status and Faults\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eSafety Rating\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003ePLe, SIL 3, Cat 4\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0.35 lbs (0.16 kg)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eEngineering Advantages\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eRFID Coded Security:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe 440N-Z21SS2HN employs RFID technology to provide high resistance to tampering. Unlike traditional magnetic switches, this \"Standard Code\" unit prevents unauthorized bypass using simple magnets, ensuring operators cannot easily circumvent the safety system.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSuperior Misalignment Tolerance:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe 18mm sensing distance accommodates significant door sag or guard misalignment. This hardware feature eliminates nuisance trips in heavy-duty environments where vibration or mechanical wear causes minor shifts in guard positioning over time.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSimplified Series Wiring:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eIntegrated OSSD (Output Signal Switching Device) outputs allow for the series connection of multiple SensaGuard switches while maintaining the highest safety rating. This architecture reduces the required I\/O on your safety controller and simplifies cable management across large machine cells.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eVisual Diagnostic Feedback:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eA multi-color LED provides immediate status updates directly on the switch body. Technicians identify \"Guard Closed,\" \"Guard Open,\" or \"Internal Fault\" states at a glance, drastically reducing troubleshooting time during commissioning or downtime events.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWashdown Ready Construction:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe rectangular plastic housing resists common industrial chemicals and high-pressure washdown procedures. Its non-contact nature removes mechanical wear points, making it ideal for food processing, pharmaceutical, and packaging lines where hygiene and uptime are paramount.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFAQs\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the difference between \"Standard\" and \"Unique\" coding?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e440N-Z21SS2HN\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003euses Standard Coding, meaning any SensaGuard actuator of the same type will trigger the switch. For applications requiring a one-to-one match between a specific sensor and its actuator to prevent all forms of bypass, you should select the \"Unique Coded\" version.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCan I mount this switch directly onto metal surfaces?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes, but metallic environments can slightly reduce the effective sensing distance. We recommend maintaining a small non-metallic buffer or testing the 18mm range during installation to ensure consistent switching performance.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eIs the 6-inch pigtail replaceable?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo, the pigtail is permanently molded into the switch body to maintain its IP environmental rating. However, the standard 8-pin Micro (M12) connector allows you to use standard extension cables for long-distance runs to the control cabinet.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHow do I confirm this unit is brand new?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWe guarantee every 440N-Z21SS2HN arrives in its\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eOriginal Allen-Bradley Factory Packaging\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ewith intact serial numbers. As a 100% Brand New item, the housing will show zero mounting marks, and the RFID pairing has never been initiated in a field environment.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":52532314669365,"sku":"440N-Z21SS2HN","price":66.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0973\/7630\/5461\/files\/440N-Z21SS2HN.jpg?v=1775206461","url":"https:\/\/www.5gplc.com\/products\/allen-bradley-440n-z21ss2hn-guardmaster-sensaguard-non-contact-safety-interlock-switch","provider":"High Five PLC Solution Limited","version":"1.0","type":"link"}