Rittal 7338221 EFD III Early Fire Detection - 1U

The 1U, 19" rack-mount EFD III provides a compact footprint that simplifies installation inside closed enclosure systems, enabling higher cabinet density and cleaner cable routing. This feature directly reduces installation time and space requirements, improving overall operational efficiency in control panels and switchgear. The integrated smoke extraction system continuously vents air from the protected area, delivering proactive protection and minimizing the risk of smoke buildup during a fault event. In practice, this means shorter response times for alarms and safer cabinet ventilation in critical environments, such as manufacturing lines and process control rooms. The optical smoke detector (sensitivity ~3.5%/m) delivers early detection, enabling pre-alarms and timely maintenance planning, which reduces the likelihood of cascading faults and costly downtime. The control electronics monitor detector status, while 6 LED displays provide plain-language diagnostics for quick troubleshooting, lowering maintenance labor and reducing downtime during fault clearance. Four relay outputs (alarms and faults) enable seamless integration with existing safety circuits and building management systems, delivering reliable signaling to downstream interlocks and control logic. The unit operates on 100–240 V, 1~, 50/60 Hz, ensuring compatibility with mainstream power rails and simplifying site electrification. Approximately four hours of uninterruptible operation supports cabinet protection during short-term power interruptions, preserving critical alarms and data integrity. Overall, the system is designed for non-accessible enclosure environments, delivering a reliable, low-maintenance solution that supports compliant safety monitoring and predictable lifecycle costs.