{"product_id":"allen-bradley-440n-z21us2an","title":"440N-Z21US2AN","description":"\u003ch2\u003eOverview of Allen Bradley 440N-Z21US2AN\u003c\/h2\u003e\n\u003cp\u003eThe Allen Bradley 440N-Z21US2AN is part of the SensaGuard Guardmaster safety switch series, engineered for modern machine guarding and access control systems. This non-contact switch is designed for high-reliability applications where detecting the presence or absence of a guard door is critical to operator safety. Its rectangular flat pack housing and solid-state contacts provide dependable performance in demanding industrial environments. The Allen Bradley 440N-Z21US2AN supports integration into safety-related control systems, requiring a risk assessment prior to installation as per safety standards. Certified with compliance to regional safety regulations, it is a trusted component for OEMs and end users seeking to meet international safety requirements.\u003c\/p\u003e\n\n\u003ch2\u003eKey Features of Allen Bradley 440N-Z21US2AN\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eNon-contact, solid-state safety switch for reliable guard door detection\u003c\/li\u003e\n\u003cli\u003e24V DC Class 2 SELV or PELV power supply operation for enhanced safety\u003c\/li\u003e\n\u003cli\u003eTwo independently connected safety outputs (2 N.C. Safety, 1 N.O. Aux) for flexible integration\u003c\/li\u003e\n\u003cli\u003eFast response time (Off) of 45 ms and DC-12\/DC-13 utilization category\u003c\/li\u003e\n\u003cli\u003eDesigned for use in safety-related control systems; risk assessment required before installation\u003c\/li\u003e\n\u003cli\u003eRobust mechanical design with housing made from durable polycarbonate\u003c\/li\u003e\n\u003cli\u003eHigh environmental resistance: IP66, IP67, IP69K washdown rating for demanding installations\u003c\/li\u003e\n\u003cli\u003eOperating temperature range of -25°C to +70°C for use in harsh conditions\u003c\/li\u003e\n\u003cli\u003eCompact, rectangular flat pack design for easy integration into machine guards\u003c\/li\u003e\n\u003cli\u003eSuitable for high-availability applications with a maximum operating cycle frequency of 0.25 Hz\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eTechnical Specs of Allen Bradley 440N-Z21US2AN\u003c\/h2\u003e\n\n\u003ctable border=\"1\" cellpadding=\"5\" cellspacing=\"0\"\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHousing Material\u003c\/td\u003e\n\u003ctd\u003ePlastic Rectangular Flat Pack (Polycarbonate)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eElectrical Connection\u003c\/td\u003e\n\u003ctd\u003ePVC Cable, 2 x PNP Safety (0V safe), 1 x PNP Aux (24V run)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e24V DC, Class 2 SELV\/PELV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Current (Max)\u003c\/td\u003e\n\u003ctd\u003e200 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResponse Time (Off)\u003c\/td\u003e\n\u003ctd\u003e45 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAssured Sensing Distance\u003c\/td\u003e\n\u003ctd\u003e25 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-25°C to +70°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection Rating\u003c\/td\u003e\n\u003ctd\u003eIP66, IP67, IP69K\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMechanical Life\u003c\/td\u003e\n\u003ctd\u003e500,000 cycles\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions (W x H x L)\u003c\/td\u003e\n\u003ctd\u003e16.2 x 5.2 x 18.5 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.299 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eApplications \/ Use Case\u003c\/h2\u003e\n\u003cp\u003eThe Allen Bradley 440N-Z21US2AN is widely used in industrial automation for applications requiring access protection and machine safety monitoring. It is ideal for guarding hazardous areas such as robotic cells, presses, and assembly lines where non-contact, solid-state sensing can minimize maintenance and maximize reliability. The switch is suited for environments exposed to dust, moisture, or high-pressure washdowns thanks to its robust IP rating. Integrators and plant engineers select this model for safety systems that demand compliance with international machine safety standards and where downtime reduction is a priority. Replace older mechanical safety switches with the 440N-Z21US2AN for improved uptime and safety performance.\u003c\/p\u003e\n\n\u003ch2\u003eRelated Resources\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/leadtime.ca\/\" target=\"_blank\"\u003eLeadTime.ca – Industrial Automation Components \u0026amp; Repair Services\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/leadtime.ca\/collections\/allen-bradley\" target=\"_blank\"\u003eExplore Allen Bradley Automation Solutions\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/leadtime.ca\/blogs\/learning-center\/examples-of-industrial-automation-control-systems\" target=\"_blank\"\u003eIndustrial Automation and Control Systems Explained\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/leadtime.ca\/products\/allen-bradley-194e-sy\" target=\"_blank\"\u003eAllen Bradley 194E-SY Disconnect Switch\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/leadtime.ca\/products\/allen-bradley-1321-3r18-b\" target=\"_blank\"\u003eAllen Bradley 1321-3R18-B Resistor Assembly\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen Bradley","offers":[{"title":"Default Title","offer_id":47870703108395,"sku":null,"price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0837\/4671\/7995\/files\/Leadtime_070fdde7-0636-4c36-9c79-ccc0329673f0.png?v=1723534507","url":"https:\/\/leadtime.ca\/products\/allen-bradley-440n-z21us2an","provider":"LEADTIME","version":"1.0","type":"link"}