Finder 3-Phase Monitoring Relay, 380-415 V AC, 2 CO, DIN Rail, 35 mm 704284002032

This Finder monitoring relay supervises three-phase networks for phase sequence, phase loss, undervoltage, overvoltage, and asymmetry. Unlike simple phase-sequence relays, it combines five monitoring functions in one 35 mm DIN-rail module, with two changeover contacts for control or alarm circuits.

Highlights

• Monitors phase sequence, phase loss, undervoltage, overvoltage, and asymmetry
• Nominal voltage 380–415 V AC, 50/60 Hz
• 2 CO output contacts rated 5 A / 250 V AC
• Adjustable thresholds: undervoltage 80–95%, overvoltage 105–120%, asymmetry 5–20% of Un
• Adjustable trip delay 0.1–10 s and start-up delay 0.5–10 s
• DIN rail mounting (EN 60715), width 35 mm (2 modules)

In daily use

The relay is set via front-panel potentiometers for voltage and asymmetry thresholds and time delays. LED indicators show supply and relay status. It is suitable for protecting motors, compressors, and other three-phase loads in industrial control panels.

Full specifications

• Monitoring function: phase sequence, phase loss, undervoltage, overvoltage, asymmetry
• Number of phases: 3
• Nominal voltage (Un): 380–415 V AC, 50/60 Hz
• Output contacts: 2 CO (changeover)
• Rated output current: 5 A at 250 V AC
• Undervoltage threshold range: 80–95% of Un
• Overvoltage threshold range: 105–120% of Un
• Asymmetry threshold range: 5–20%
• Trip delay time range: 0.1–10 s
• Start-up delay time range: 0.5–10 s
• Mounting: DIN rail (EN 60715)
• Housing width: 35 mm (2 modules)
• Protection degree: IP20 terminals, IP40 housing
• Operating temperature range: -20 to +60 °C
• Power consumption: < 4 VA
• Dielectric strength input/output: 2 kV AC
• Contact material: AgNi

Final note

Compact and versatile, this relay consolidates essential three-phase monitoring into a single device, reducing panel space and wiring.