{"product_id":"allen-bradley-1492-rcda4a40","title":"1492-RCDA4A40","description":"\u003ch2\u003eOverview of Allen Bradley 1492-RCDA4A40\u003c\/h2\u003e\n\nThe Allen Bradley 1492-RCDA4A40 is a 4-pole residual current device engineered to detect and interrupt leakage current to ground in industrial electrical systems. This 40-amp unit provides 30mA sensitivity and operates at a minimum test voltage of 170V, making it suitable for standard North American applications. Part of the Rockwell Automation Bulletin 1492-RCD series, this device mounts directly to standard 35mm DIN rail, simplifying installation in control panels and enclosures. The 1492-RCDA4A40 carries an interrupt rating of 1 kAIC and complies with CCC, CE, and cUL standards. Its compact design allows for integration alongside miniature circuit breakers and other protection modules while maintaining proper spacing and ventilation. The device incorporates Type A detection characteristics, responding to both AC residual currents and pulsating DC residual currents up to 6mA. This dual-detection capability proves critical in modern industrial environments where variable frequency drives and electronic loads generate mixed current types.\n\n\u003ch2\u003eKey Features of Allen Bradley 1492-RCDA4A40\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e4-pole configuration with 40A current rating\u003c\/li\u003e\n\u003cli\u003e30mA sensitivity for personnel protection\u003c\/li\u003e\n\u003cli\u003eType A detection responds to AC and pulsating DC residual currents\u003c\/li\u003e\n\u003cli\u003e35mm DIN rail mounting for quick installation\u003c\/li\u003e\n\u003cli\u003e1 kAIC interrupt rating\u003c\/li\u003e\n\u003cli\u003eStandard configuration with 170V minimum test voltage\u003c\/li\u003e\n\u003cli\u003eCCC, CE, and cUL certified for global compliance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eTechnical Specs of 1492-RCDA4A40\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Poles:\u003c\/strong\u003e 4-pole\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCurrent Rating:\u003c\/strong\u003e 40A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSensitivity:\u003c\/strong\u003e 30mA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterrupt Rating:\u003c\/strong\u003e 1 kAIC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMinimum Test Voltage:\u003c\/strong\u003e 170V\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e 35mm DIN Rail\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandards:\u003c\/strong\u003e CCC, CE, cUL compliant\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Type A (AC and pulsating DC detection)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eApplications \/ Use Case\u003c\/h2\u003e\n\nThe 1492-RCDA4A40 residual current device protects personnel and equipment in industrial automation systems where ground fault detection is required. Manufacturing facilities use this device to safeguard operators working with machinery containing electronic drives, motors, and control systems that may develop leakage currents. The 30mA sensitivity threshold provides fast response to dangerous ground faults while minimizing nuisance tripping from normal operational leakage. The 4-pole configuration makes it appropriate for three-phase power distribution with neutral monitoring, common in North American industrial installations running at 480Y\/277V or 208Y\/120V. Food processing plants, chemical facilities, and water treatment operations benefit from this level of protection where equipment exposure to moisture increases shock risk. Integration with existing Allen Bradley circuit protection components allows system designers to build comprehensive safety architectures. The device pairs effectively with miniature circuit breakers in the same 1492 family, creating layered protection against both overcurrent and ground fault conditions within a single panel footprint.\n\n\u003ch2\u003eRelated Resources\u003c\/h2\u003e\n\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\"\u003eView All Allen Bradley Products\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\"\u003eExamples of Industrial Automation and Control Systems\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-1609-d600n\" target=\"_blank\"\u003eAllen Bradley 1609-D600N UPS Backup Power Supply\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen Bradley","offers":[{"title":"Default Title","offer_id":47870771659051,"sku":null,"price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0837\/4671\/7995\/files\/Leadtime_d348373f-168c-4de9-a27b-5898e4f539da.png?v=1723532465","url":"https:\/\/leadtime.ca\/products\/allen-bradley-1492-rcda4a40","provider":"LEADTIME","version":"1.0","type":"link"}