Phoenix Contact – 2866064 – EMD‑FL‑3V‑400 3‑Phase Voltage/Phase Monitoring Relay

The Phoenix Contact 2866064 (EMD‑FL‑3V‑400) is an industrial-grade monitoring relay that safeguards three-phase networks by detecting undervoltage, window conditions, phase-sequence errors, phase failure, and asymmetry. It offers a broad voltage measurement range and adjustable response parameters to enhance system reliability in automation and power distribution setups.

Key Features & Technical Specifications:

• Model: EMD‑FL‑3V‑400 (MPN 2866064)  

• Monitoring Range: 280–520 V AC in three-phase systems (3N ~400/230 V nominal)  

• Functions: Detects undervoltage, window violations, phase-sequence mismatch, phase loss, and asymmetry  

• Supply Voltage Range: 24–240 V AC/DC (± tolerances)  

• Time Delay & Threshold Adjustment: Front-panel potentiometers adjust response delay (0.1–10 s), asymmetry settings (5–25 %), and threshold limits  

• Output Contacts: 2 change-over (PDT) contacts rated for up to 5 A/250 V AC; electrical life ~200,000 cycles  

• Accuracy & Response: ±5 % basic accuracy; repeatability ≤2 %; recovery time 500 ms  

• Dimensions & Mounting: Slim 22.5 mm DIN-rail housing; 113 × 22.5 × 90 mm; screw-terminals; weight ~165–177 g  

• Operating Conditions & Durability: Operating temp –25 °C to +55 °C; mechanical life ~20 million cycles; pollution degree 2, overvoltage category III