$ 222.41
Ensure reliable voltage control with Phoenix Contact EMD-SL-3V-400-N. Compact relay for 3-phase monitoring, preventing downtime and protecting equipment.
The Phoenix Contact EMD-SL-3V-400-N monitoring relay is designed to safeguard three-phase power systems by reliably supervising voltage levels between 280 and 520 V AC. Built with a neutral conductor connection and adaptable supply options, it ensures smooth and safe operation in industrial environments. Compact yet powerful, this device continuously checks electrical parameters to prevent costly downtime, protect sensitive machinery, and maintain process stability. With features such as configurable thresholds and response delays, it delivers precise monitoring and supports greater system availability across energy, automation, and manufacturing applications.
The EMD-SL-3V-400-N monitoring relay delivers robust protection for complex systems where uninterrupted power quality is essential. Adjustable voltage windows and response delays allow operators to tailor the relay to specific requirements, while LED indicators provide instant visual feedback for quicker troubleshooting. In practice, this translates into reduced equipment failures, fewer unexpected shutdowns, and improved maintenance planning. From heavy mechanical engineering plants to chemical production lines and automated power networks, the relay ensures long-lasting reliability. Its slim DIN-rail design, durable housing, and compliance with global safety standards make it a trusted choice for critical operations.
The Phoenix Contact EMD-SL-3V-400-N stands out as a compact yet intelligent solution for monitoring three-phase voltage systems. It offers adjustable thresholds, fast response settings, and clear status indication—all in a slim DIN-rail design. By combining versatility with robust performance, it ensures electrical stability while saving space and simplifying integration into modern industrial setups.
Unexpected voltage fluctuations can cause equipment breakdowns, production delays, and costly downtime. The EMD-SL-3V-400-N solves this challenge by continuously supervising voltage balance and stability across three-phase systems. It quickly detects deviations, signals potential issues, and helps operators react before failures escalate—providing protection that keeps operations safe, reliable, and energy-efficient.
| Feature | Details | Benefit |
|---|---|---|
| Operating Voltage Range | 280…520 V AC (3-phase, with neutral) | Flexible monitoring across wide voltage fluctuations |
| Supply Voltage Options | 24 V DC or 24…230 V AC (via power modules) | Adaptable for different system designs and global usage |
| Response Delay | Adjustable 0.2…10 s | Prevents unnecessary trips by filtering out short disturbances |
| Asymmetry Detection | Adjustable thresholds | Protects equipment from phase imbalance and improves uptime |
| Contact Type | 1 floating changeover contact | Ensures versatile signal output and system integration |
| Housing Width | 22.5 mm | Slim design saves control cabinet space |
| Operating Temperature | -25 °C … +55 °C | Reliable operation in harsh industrial environments |
| Service Life (Electrical) | 200,000 cycles at rated load | Long-term reliability and reduced maintenance costs |
| LED Indicators | Multi-color display | Quick status recognition for faster troubleshooting |
| Mounting | DIN rail, NS 35 standard | Simple and secure installation across setups |
| Certifications | CE, UL Listed | Meets international safety and performance requirements |
Download EMD-SL-3V-400-N 2885278 Datasheet
| Commercial Data | Details | Benefit |
|---|---|---|
| GTIN Number | 4017918996512 | Ensures accurate product identification for procurement and logistics |
| Tariff / Customs Number | 85364900 | Facilitates smooth customs handling and international trade compliance |
| Weight | 133.3 g (net) / 137.8 g (with packing) | Lightweight design reduces shipping cost and simplifies installation |
| Country of Origin | Austria | Manufactured under strict European quality and safety standards |
Municipal and industrial pumping stations often rely on multiple large motors to keep water or wastewater flowing. Power imbalances or phase loss can quickly cause one motor to trip and create cascading issues across the system. By using the EMD-SL-3V-400-N relay, operators can set voltage windows and asymmetry thresholds to detect faults early. The adjustable response delay prevents unnecessary shutdowns from short disturbances, ensuring that only critical issues trigger alarms. This helps keep pumps running continuously, reduces downtime, and extends motor service life under challenging grid conditions.
Modern assembly lines for electronic devices depend on highly sensitive soldering and testing systems that require stable three-phase power. Even small deviations in voltage can damage delicate boards or interrupt quality checks. The EMD-SL-3V-400-N provides constant monitoring of supply voltage and instantly signals if levels drift outside safe ranges. Built-in LED indicators give technicians clear fault information, while the floating output contact connects easily to automation systems. With these features, plants can safeguard sensitive machines, avoid product losses, and maintain a higher level of production consistency.
In commercial towers and industrial facilities, HVAC systems rely on powerful three-phase compressors and chillers. If one phase weakens or becomes imbalanced, the result can be overheating, excess vibration, or costly breakdowns. The EMD-SL-3V-400-N monitors voltage stability across all phases and provides clear status indications to maintenance teams. With customizable delay and asymmetry settings, the device helps distinguish between brief fluctuations and true faults. This ensures protection of major HVAC assets, avoids unexpected shutdowns, and guarantees reliable comfort and cooling for building occupants.
Solar farms and hybrid renewable energy setups feed their output into three-phase networks or storage systems. Voltage fluctuations, incorrect phase sequence, or imbalances can stress inverters and reduce energy efficiency. The EMD-SL-3V-400-N addresses these challenges by supervising voltage levels between 280 and 520 V AC and confirming stable phase relationships. With its quick fault detection and response delay capability, the relay ensures that inverters operate safely even when grid conditions are unstable. This contributes to improved energy harvesting, reduced maintenance costs, and longer inverter lifespans in renewable installations.
| Category | Model | Part Number | Benefit |
|---|---|---|---|
| Power Module (DC) | EMD-SL-PS-24DC | 2885359 | Enables DC operation of the monitoring relay |
| Power Module (AC, Low Voltage) | EMD-SL-PS-24AC | 2866103 | Ideal for low-voltage AC supply systems |
| Power Module (AC, Mid Voltage) | EMD-SL-PS-110AC | 2866116 | Suitable for medium-voltage AC installations |
| Power Module (AC, Standard Voltage) | EMD-SL-PS-120AC | 2885731 | Provides compatibility with standard AC supply ranges |
| Power Module (AC, High Voltage) | EMD-SL-PS-230AC | 2866129 | Ensures safe operation with higher-voltage AC supplies |
| DIN Rail Accessories | NS 35 Standard Rail | – | Provides secure and standardized mounting for relay installation |
| Protective Fuse | Fast-Blow Fuse 5 A | – | Protects the relay circuit and ensures safe switching |
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.
