$ 181.24
Ensure reliable three-phase power protection with Phoenix Contact EMD-FL-3V-400. Prevent undervoltage, phase errors, and downtime in critical systems.
The Phoenix Contact EMD-FL-3V-400 Voltage Monitoring Relay provides reliable supervision of three-phase AC networks within the 280–520 V range. It helps protect equipment from undervoltage, incorrect phase sequence, imbalance, and phase failure. With its compact DIN-rail design and dual changeover contacts, it integrates easily into automation and power systems. Adjustable response settings and broad power supply options make it versatile for industries where stable voltage is critical, ensuring reduced downtime and improved process safety.
Engineered for demanding environments, the Phoenix Contact EMD-FL-3V-400 combines durability with advanced monitoring capabilities. Front-panel potentiometers allow fine adjustment of asymmetry and delay times, while indicator LEDs give clear operating feedback. By safeguarding motors, drives, and other sensitive electronics from voltage irregularities, it minimizes unexpected shutdowns and costly damage. Its flexibility makes it suitable for sectors such as chemical processing, machine building, and plant automation. The result is dependable protection that enhances operational continuity and ensures long-term efficiency.
The EMD-FL-3V-400 is more than a voltage relay—it’s a safeguard for industrial uptime. Its wide monitoring range, precision adjustments, and clear LED indicators ensure operators always know their system’s status. Compact yet powerful, it’s built to fit seamlessly into automation panels while delivering dependable protection that keeps machinery running without interruption.
Unexpected voltage drops, wrong phase sequences, or imbalances can damage motors, halt production, and lead to costly downtime. The Phoenix Contact EMD-FL-3V-400 solves these issues by continuously supervising three-phase power, instantly detecting irregularities, and triggering protective responses. This prevents failures, reduces repair costs, and guarantees smoother, safer industrial operations.
| Feature | Details | Benefit |
|---|---|---|
| Monitoring Range | 280 V AC … 520 V AC | Reliable protection across a wide voltage spectrum |
| Monitored Parameters | Undervoltage, phase sequence, phase failure, asymmetry, window monitoring | Prevents damage from power irregularities |
| Supply Voltage Range | 24 V AC/DC … 240 V AC/DC | Flexible installation across diverse systems |
| Response Delay Setting | 0.1 s … 10 s (adjustable) | Avoids false trips during brief fluctuations |
| Output Contacts | 2 changeover (floating) | Versatile connection to alarms or control systems |
| Service Life (Electrical) | 200,000 cycles at 1000 VA | Long operational durability |
| Indication | LED status display | Clear, immediate system condition feedback |
| Mounting Type | DIN rail NS 35 | Quick installation with universal compatibility |
| Protection Class | Housing IP40 / Terminals IP20 | Enhanced safety for industrial environments |
| Operating Temperature | -25 °C to +55 °C | Dependable performance in harsh conditions |
| Certifications | CE, UL/cUL Listed | Compliance with international safety standards |
Download EMD-FL-3V-400 (2866064) Datasheet
| Commercial Data | Details |
|---|---|
| GTIN Number | 4017918975029 |
| Traffic Number | 2866064 |
| Weight | 164 g (net) / 165.8 g (with packaging) |
| Country of Origin | Austria (AT) |
In production plants, three-phase motors drive conveyors, pumps, and compressors that are critical to daily output. Any phase loss, undervoltage, or imbalance can cause overheating, vibration, or sudden stoppage. The EMD-FL-3V-400 continuously tracks voltage conditions and reacts instantly to abnormalities. By cutting off supply or triggering alarms, it shields motor windings, extends service life, and prevents unexpected downtime that could disrupt production schedules.
Large HVAC systems and industrial chillers depend on stable three-phase power to keep compressors, fans, and pumps working efficiently. Fluctuations in voltage or incorrect phase sequence can lead to inefficient cooling and expensive failures. With adjustable thresholds and LED indicators, the EMD-FL-3V-400 provides constant supervision and responds rapidly when irregularities appear. This ensures temperature stability, protects key components, and reduces the likelihood of service interruptions.
When switching between mains and backup generators, phase consistency is crucial for safe load transfer. If a generator produces an incorrect phase order or loses one phase, connected systems can be severely damaged. Installed in generator control panels, the EMD-FL-3V-400 verifies correct voltage balance and phase sequence before the load is connected. This prevents mis-synchronization, secures smooth operation during outages, and increases trust in backup systems.
Hybrid energy systems combining solar, batteries, and generators must maintain steady three-phase supply to protect inverters and sensitive loads. Voltage imbalance or phase failure can occur when sources are added or removed. The EMD-FL-3V-400 monitors all incoming lines and isolates faulty feeds when limits are exceeded. By acting quickly, it preserves equipment integrity, stabilizes the microgrid, and supports continuous renewable power delivery.
| Category | Model | Part Number | Benefits / Purpose |
|---|---|---|---|
| DIN Rail Power Supply | QUINT POWER 24 V DC, 5 A | 2866750 | Provides stable 24 V DC supply for reliable relay operation |
| Terminal Block | UK 5N | 3044076 | Simplifies wiring connections in control panels |
| Terminal Block | UK 2.5B | 3044111 | Compact block for smaller cross-sections and space saving |
| Surge Protection Device | VAL-MS 230 ST | 2838204 | Shields relay and connected loads from voltage spikes |
| DIN Rail | NS 35/7.5 | 0800886 | Standard mounting rail for secure installation |
| Labeling System | UC-TM 5 Marker | 0818102 | Ensures clear terminal identification and traceability |
| Relay Interface | PLC-INTERFACE Relay Module | 2900373 | Provides easy integration with PLCs and control logic |
| Circuit Breaker | CB TM1 1A | 2800797 | Protects downstream devices from overloads and faults |
| Circuit Breaker | CB MC 2A | 2800928 | Supports selective shutdown and circuit protection |
| Wiring Accessory | Ferrule Set | 1212062 | Guarantees professional wiring and reliable connections |
For expert guidance before placing your order.
Warranty – 1-year warranty for your peace of mind.
Global Shipping – We ship worldwide with secure packaging and reliable delivery.
Technical Support – Contact us for professional after-sales technical assistance.
