{"product_id":"440n-z21ss2bn-allen-bradley-guardmaster-non-contact-rfid-safety-switch","title":"440N-Z21SS2BN Allen Bradley Guardmaster Non-Contact RFID Safety Switch","description":"\u003ch3\u003e\u003cb\u003eProduct Overview\u003c\/b\u003e\u003c\/h3\u003e\n\u003cp\u003eThe \u003cspan style=\"color: #b91c1c;\"\u003e\u003cb\u003e440N-Z21SS2BN\u003c\/b\u003e\u003c\/span\u003e is an advanced RFID non-contact safety switch engineered by \u003cspan style=\"color: #b91c1c;\"\u003e\u003cb\u003eAllen Bradley Guardmaster\u003c\/b\u003e\u003c\/span\u003e within the \u003cspan style=\"color: #b91c1c;\"\u003e\u003cb\u003e440N Series\u003c\/b\u003e\u003c\/span\u003e. Designed for industrial machine guarding applications, this device utilizes high-coding RFID technology to prevent tampering and bypass attempts. Housed in a durable red plastic cuboid enclosure, it delivers reliable status monitoring for safety gates, doors, and machine enclosures.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cb\u003eTechnical Specifications\u003c\/b\u003e\u003c\/h3\u003e\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" style=\"border-collapse: collapse; width: 100%; border-color: #ddd;\"\u003e\n  \u003ctr\u003e\n    \u003cth style=\"text-align: left; background-color: #f9f9f9;\"\u003eParameter\u003c\/th\u003e\n    \u003cth style=\"text-align: left; background-color: #f9f9f9;\"\u003eSpecification\u003c\/th\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd\u003eBrand\u003c\/td\u003e\n    \u003ctd\u003e\u003cspan style=\"color: #b91c1c;\"\u003e\u003cb\u003eAllen Bradley Guardmaster\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd\u003eModel \/ Series\u003c\/td\u003e\n    \u003ctd\u003e\n\u003cspan style=\"color: #b91c1c;\"\u003e\u003cb\u003e440N-Z21SS2BN\u003c\/b\u003e\u003c\/span\u003e (\u003cspan style=\"color: #b91c1c;\"\u003e\u003cb\u003e440N Series\u003c\/b\u003e\u003c\/span\u003e)\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd\u003eSensor Principle\u003c\/td\u003e\n    \u003ctd\u003eRFID High-Coded\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd\u003eSwitching Distance\u003c\/td\u003e\n    \u003ctd\u003e15 mm\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd\u003eOperating Voltage\u003c\/td\u003e\n    \u003ctd\u003e24V dc\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd\u003eSwitching Current\u003c\/td\u003e\n    \u003ctd\u003e200 mA max\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd\u003eSafety Contacts\u003c\/td\u003e\n    \u003ctd\u003e2 NC (Normally Closed)\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd\u003eAuxiliary Contacts\u003c\/td\u003e\n    \u003ctd\u003e1 Auxiliary Contact\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd\u003eSafety Category\u003c\/td\u003e\n    \u003ctd\u003eCategory 4 \/ PL e per EN ISO 13849-1\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd\u003eEnclosure Rating\u003c\/td\u003e\n    \u003ctd\u003eIP69K\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd\u003eHousing Material \u0026amp; Color\u003c\/td\u003e\n    \u003ctd\u003ePlastic, Red\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd\u003eDimensions\u003c\/td\u003e\n    \u003ctd\u003eLength: 88.14 mm, Width: 24.99 mm, Depth: 20.65 mm\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd\u003eConnection Type\u003c\/td\u003e\n    \u003ctd\u003eMicro M12 Connector\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd\u003eApprovals\u003c\/td\u003e\n    \u003ctd\u003eEN, CE\u003c\/td\u003e\n  \u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003e\u003cb\u003eInstallation Guide\u003c\/b\u003e\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eMount the \u003cspan style=\"color: #b91c1c;\"\u003e\u003cb\u003e440N-Z21SS2BN\u003c\/b\u003e\u003c\/span\u003e sensor and actuator securely on rigid machine frames.\u003c\/li\u003e\n  \u003cli\u003eEnsure proper alignment between the switch and the included coded actuator within the 15 mm sensing range.\u003c\/li\u003e\n  \u003cli\u003eConnect the unit to your control system using a standard Micro M12 cable according to wiring diagrams.\u003c\/li\u003e\n  \u003cli\u003eVerify mechanical clearance to prevent physical impact during heavy machine operation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cb\u003eCommissioning \u0026amp; Maintenance Convenience\u003c\/b\u003e\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eIntegrated LED indicators provide real-time status feedback for rapid diagnostics and troubleshooting.\u003c\/li\u003e\n  \u003cli\u003ePlug-and-play Micro M12 connection simplifies wiring and reduces replacement downtime.\u003c\/li\u003e\n  \u003cli\u003eNon-contact operation minimizes mechanical wear, extending service life in demanding industrial environments.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cb\u003eCompatibility Information\u003c\/b\u003e\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eFully compatible with standard safety relays, safety PLCs, and safety input modules accepting 24V dc signals.\u003c\/li\u003e\n  \u003cli\u003eInteroperable with other automation equipment requiring Category 4 safety monitoring.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cb\u003eCertification Information\u003c\/b\u003e\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eMeets essential European standards, bearing CE approval.\u003c\/li\u003e\n  \u003cli\u003eComplies with EN standards for industrial control and safeguarding applications.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cb\u003ePackage List\u003c\/b\u003e\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 x \u003cspan style=\"color: #b91c1c;\"\u003e\u003cb\u003e440N-Z21SS2BN\u003c\/b\u003e\u003c\/span\u003e RFID Safety Switch Sensor\u003c\/li\u003e\n  \u003cli\u003e1 x Matched Coded Actuator\u003c\/li\u003e\n  \u003cli\u003e1 x Instruction Manual\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cb\u003eBuying Guide\u003c\/b\u003e\u003c\/h3\u003e\n\u003cp\u003eWhen selecting a safety switch for your industrial setup, consider the physical operating environment and safety rating requirements. The \u003cspan style=\"color: #b91c1c;\"\u003e\u003cb\u003e440N-Z21SS2BN\u003c\/b\u003e\u003c\/span\u003e from the \u003cspan style=\"color: #b91c1c;\"\u003e\u003cb\u003e440N Series\u003c\/b\u003e\u003c\/span\u003e offers robust IP69K washdown protection and high-coding security, making it an ideal choice for packaging, food processing, and general manufacturing applications where hygiene and tamper resistance are critical.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cb\u003eFrequently Asked Questions (FAQ)\u003c\/b\u003e\u003c\/h3\u003e\n\n\u003cp\u003e\u003cb\u003eQ: What makes the \u003cspan style=\"color: #b91c1c;\"\u003e\u003cb\u003e440N-Z21SS2BN\u003c\/b\u003e\u003c\/span\u003e superior to traditional mechanical safety switches?\u003c\/b\u003e\u003cbr\u003e\nA: RFID technology provides high coding resistance against tampering and bypass, while non-contact operation eliminates physical friction and wear.\u003c\/p\u003e\n\n\u003cp\u003e\u003cb\u003eQ: Can multiple switches be connected in series?\u003c\/b\u003e\u003cbr\u003e\nA: Yes, many safety controllers support series connection of compatible RFID safety sensors while maintaining high safety category ratings.\u003c\/p\u003e\n\n\u003cp\u003e\u003cb\u003eQ: What does the IP69K rating mean for practical installation?\u003c\/b\u003e\u003cbr\u003e\nA: IP69K ensures the sensor withstands high-pressure, high-temperature washdown procedures, ideal for washdown-frequent industries.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":68047945629878,"sku":"440N-Z21SS2BN","price":132.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/440N-Z21SS2BN-1.jpg?v=1794465110","url":"https:\/\/www.plcsparehub.com\/products\/440n-z21ss2bn-allen-bradley-guardmaster-non-contact-rfid-safety-switch","provider":"Global PLC Spare Hub","version":"1.0","type":"link"}