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Monitoring relays - FINDER
Monitoring Relays – FINDER: Precision Supervision for Industrial Electrical Networks
Monitoring relays from FINDER are compact, DIN-rail mounted devices designed for continuous supervision of critical electrical parameters in industrial and building automation systems. These relays monitor variables such as voltage (single-phase or three-phase, e...
Monitoring Relays – FINDER: Precision Supervision for Industrial Electrical Networks
Monitoring relays from FINDER are compact, DIN-rail mounted devices designed for continuous supervision of critical electrical parameters in industrial and building automation systems. These relays monitor variables such as voltage (single-phase or three-phase, e.g., 230V AC or 400V AC), current (up to several amperes), frequency (50/60 Hz), phase sequence, phase loss, and asymmetry. They typically feature adjustable thresholds, hysteresis settings, and time delays (e.g., 0.1 to 10 seconds) to prevent nuisance tripping. Outputs are usually SPDT or DPDT relay contacts rated for 8A or 16A at 250V AC, ensuring compatibility with PLCs, contactors, and motor starters. The series includes models for overvoltage, undervoltage, overcurrent, undercurrent, and combined monitoring, with LED indicators for status and alarm conditions. FINDER monitoring relays are known for their reliability, precision, and ease of configuration, making them essential for protecting sensitive equipment.
These relays are deployed in a wide range of environments, including industrial control panels, motor control centers (MCCs), power distribution boards, HVAC systems, pumping stations, and renewable energy installations (e.g., solar inverters and wind turbines). They are critical for applications such as motor protection (preventing damage from phase failure or voltage imbalance), generator synchronization, load shedding, and power quality monitoring. In building automation, they supervise lighting circuits, elevator controls, and emergency power systems. Their compact design (typically 17.5 mm or 22.5 mm wide) allows for high-density mounting in crowded cabinets, while their robust construction ensures operation in harsh conditions with ambient temperatures from -20°C to +60°C and IP20 protection.
Key subcategories within the FINDER monitoring relay range include the 70 series (e.g., 70.11, 70.21, 70.31) for voltage monitoring, the 72 series (e.g., 72.11, 72.21) for current monitoring, and the 73 series (e.g., 73.11, 73.21) for frequency and phase monitoring. The article code structure typically follows the pattern: [Series].[Function].[Version], where the first two digits indicate the series (e.g., 70 for voltage), the next two digits specify the function (e.g., 11 for overvoltage, 21 for undervoltage), and the final digits denote the version or accessories. For example, 70.11.8.230.0000 indicates an overvoltage relay with 8A output and 230V AC supply. Other notable codes include 70.21.8.230.0000 (undervoltage) and 72.11.8.230.0000 (overcurrent). These relays are available with fixed or adjustable thresholds, and with or without time delay functions.
Partnering with Electric Automation Network ensures access to genuine FINDER monitoring relays at competitive prices, with up to 65% discount compared to list prices. Our platform offers real-time pricing, detailed technical documentation (including datasheets and wiring diagrams), and personalized support from specialized engineers who can assist with selection, configuration, and troubleshooting. We provide express worldwide shipping, ensuring that critical components reach your facility within days, not weeks. Whether you need a single unit for a prototype or bulk quantities for a large-scale project, our logistics network guarantees fast, reliable delivery. Trust our expertise to keep your systems running safely and efficiently.
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