$ 143.06
Ensure reliable voltage control with Phoenix Contact EMD-BL-V-230 relay. Detects undervoltage, improves uptime, and protects critical equipment.
The Phoenix Contact EMD-BL-V-230 Voltage Monitoring Relay (2903523) ensures reliable monitoring of single-phase AC/DC voltages at 24 V or 230 V. Designed to prevent costly downtime, it quickly detects undervoltage or window deviations, helping safeguard sensitive electrical systems. With LED indicators for status and error alerts, this compact DIN-rail device enhances visibility and response time in demanding industrial environments. Its robust build and adjustable response delays make it ideal for maintaining operational safety across sectors such as machine building, building automation, and energy management. By continuously tracking supply voltage, the EMD-BL-V-230 delivers confidence in stable and error-free operations.
The Phoenix Contact EMD-BL-V-230 provides precise monitoring and early fault detection, ensuring seamless operation of electrical networks. Featuring a floating changeover contact and durable screw connections, it integrates smoothly into existing setups while guaranteeing a long service life. Its compact 17.5 mm housing saves panel space without compromising performance. Real-world benefits include faster troubleshooting thanks to clear LED signaling, minimized downtime through reliable response accuracy, and enhanced protection of costly equipment against voltage fluctuations. Whether in manufacturing plants, control cabinets, or building services, this monitoring relay helps reduce maintenance costs and improves system availability by proactively addressing voltage issues.
The Phoenix Contact EMD-BL-V-230 stands out as a compact yet highly reliable monitoring relay designed to safeguard electrical systems. Its adjustable response delay, clear LED signaling, and robust screw connections make it both user-friendly and durable. By continuously tracking voltage levels, it ensures equipment runs smoothly without hidden risks. It’s the smart choice for industries that demand safety, efficiency, and long-lasting performance.
Unstable voltage can lead to machine downtime, costly repairs, or even system failures. The EMD-BL-V-230 solves this by detecting undervoltage and monitoring supply within a secure window, ensuring operations continue without interruption. Instead of reacting after equipment damage occurs, it acts proactively — providing early warnings and protective shutoffs. This prevents production losses, reduces maintenance, and guarantees reliability in energy-sensitive environments.
| Feature | Details | Benefit |
|---|---|---|
| Monitoring Function | Undervoltage / Window monitoring | Protects against voltage drops and unstable supply |
| Operating Voltage | 24 V AC/DC or 230 V AC | Flexible use in low- and mains-voltage applications |
| Response Delay | Adjustable 0.1 s to 10 s | Prevents false trips from short fluctuations |
| Contact Type | 1 floating changeover contact | Simple integration with control systems |
| Switching Capacity | Up to 1250 VA (5 A / 250 V AC) | Handles robust industrial switching loads |
| LED Indicators | Green: operation, Yellow: status, Red: error | Quick fault identification and reduced downtime |
| Housing Width | 17.5 mm DIN rail mount | Saves panel space in crowded enclosures |
| Service Life | 15 million mechanical cycles | Long-term reliability and reduced replacement costs |
| Operating Temperature | -25 °C to +55 °C | Stable performance across diverse environments |
| Standards & Compliance | CE, UL Listed, RoHS, REACH | Meets global safety and environmental regulations |
Download Phoenix Contact EMD-BL-V-230 (2903523) Datasheet
| Commercial Attribute | Value |
|---|---|
| GTIN Number | 4046356747271 |
| Customs Tariff Number | 85364900 |
| Weight (excluding packing) | 79.4 g |
| Country of Origin | Austria (AT) |
In water treatment operations, pumps driven by variable-speed drives must operate with consistent voltage to avoid shutdowns. A monitoring relay ensures early detection of undervoltage, preventing sudden faults that could disrupt water flow. By activating protective actions only when deviations persist, it filters out harmless fluctuations from motor starts. With its compact housing and reliable output contact, the relay integrates directly into the drive control system, ensuring continuous pumping performance, reduced downtime, and extended lifespan of sensitive drive electronics.
Telecommunication towers located in remote regions often rely on a mix of grid, solar, and generator power. Voltage instability from these sources can interrupt service and damage sensitive electronics. Installing a monitoring relay allows operators to track supply quality and trigger automatic switchover to backup systems if voltage drops below safe levels. Its narrow design fits easily into compact cabinets, while LED indicators give technicians instant insight into system health. The result is uninterrupted communication services, even under fluctuating supply conditions.
Large commercial complexes depend on steady power for HVAC, lifts, and automated controls. Brownouts or undervoltage events can cause malfunctions or stress equipment. A voltage monitoring relay positioned in the main distribution system helps prioritize critical loads during voltage drops, while nonessential equipment can be temporarily disconnected. Adjustable response delays avoid unnecessary tripping from short-term dips, and its visual status display supports quick troubleshooting. This protection improves system reliability, lowers maintenance risks, and ensures that essential building functions remain operational.
Factories with robots, conveyors, and welding machines face frequent voltage fluctuations that can cascade across production lines. A monitoring relay placed in each automation cell prevents one issue from spreading plant-wide. By detecting out-of-range voltage and signaling a controlled shutdown, it isolates disturbances locally. The durable housing, simple screw connections, and clear LED indicators make integration straightforward. With this layered protection, manufacturers can minimize unplanned stops, maintain consistent product quality, and simplify fault location when problems arise.
| Category | Model | Part Number | Description | Benefit |
|---|---|---|---|---|
| Accessory | Relay Socket | 2966016 | DIN-rail mounting socket | Simplifies relay replacement and wiring |
| Power Module | 2885359 | Auxiliary power supply module | Ensures stable relay operation and system reliability | |
| Related Model | Monitoring Relay | 2866048 | 1-phase, 0–300 V monitoring relay | Covers wider voltage ranges for flexible applications |
| Monitoring Relay | 2866064 | 3-phase, 280–520 V monitoring relay | Protects multi-phase systems from undervoltage | |
| EMD-BL-3V-400 | 2903526 | 3-phase window relay for 400 V | Designed for 400 V three-phase protection | |
| Alternative Variant | EMD-BL-V-230-PT | 2903524 | Same relay with push-in connection | Faster installation compared to screw terminals |
| EMD-BL-C-10 | 2903521 | Current monitoring relay | Monitors overload or missing load currents | |
| EMD-BL-PTC | 2906252 | Temperature monitoring relay | Protects motors and equipment from overheating |
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Warranty – 1-year warranty for your peace of mind.
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