$ 206.54
Ensure reliable undervoltage protection with Phoenix Contact EMD-SL-V-UV-300 monitoring relay. Compact, versatile, and built for industrial safety.
The Phoenix Contact EMD-SL-V-UV-300 monitoring relay ensures safe operation of single-phase systems by tracking voltages up to 300 V AC/DC. Built for undervoltage detection, it helps prevent costly equipment shutdowns and supports continuous productivity in automation, energy, and industrial environments. Its modular power supply options make it adaptable to a wide range of systems, while compact DIN-rail mounting saves valuable panel space. Clear LED indicators provide immediate feedback on operating states, helping operators react quickly to voltage issues. This relay is a practical choice for engineers who need a reliable, space-efficient, and easy-to-integrate protection device.
The Phoenix Contact EMD-SL-V-UV-300 undervoltage monitoring relay combines robust design with features that translate into everyday advantages. Adjustable startup and response delays allow systems to withstand short disturbances without triggering false alarms, which keeps machines running smoothly. With high switching performance, strong insulation, and flexible voltage supply compatibility, it is ideal for complex manufacturing lines, plant utilities, and energy control systems. Easy screw connections simplify installation, while its durable housing supports long service life even in demanding environments. By providing accurate monitoring and fast fault signaling, this device helps improve safety, extend equipment longevity, and reduce unplanned downtime.
The Phoenix Contact EMD-SL-V-UV-300 is trusted because it blends compact design, wide voltage monitoring capability, and intelligent delay functions in one reliable unit. It gives engineers confidence that their systems are shielded from voltage irregularities, reduces downtime, and fits seamlessly into modern control panels without consuming unnecessary space.
This relay solves the challenge of unnoticed undervoltage events that can damage equipment or halt production. By providing continuous supervision of single-phase power supplies, it prevents costly breakdowns, false trips, and unstable operations. The result is greater safety, smoother workflows, and reduced maintenance headaches across demanding industrial environments.
| Feature | Details | Benefit |
|---|---|---|
| Monitored Voltage Range | 0…300 V AC/DC | Wide monitoring capability for diverse applications |
| Function | Undervoltage detection | Prevents damage caused by unstable or low supply voltage |
| Supply Voltage | 24 V AC/DC…230 V AC (via power modules) | Flexible integration across multiple systems |
| Response Delay | Adjustable 0.2…10 s | Reduces false trips by tolerating short fluctuations |
| Accuracy | ≤ ±5 % of scale | Reliable and consistent performance |
| Contact Type | 1 floating changeover | Provides flexible control and alarm integration |
| Switching Capacity | Up to 1250 VA (5 A/250 V AC) | Handles robust loads with safety margin |
| Mechanical Service Life | Approx. 20 million cycles | Long-lasting durability |
| Electrical Service Life | 200,000 cycles at 1000 VA load | Dependable in industrial conditions |
| Mounting Type | DIN rail, 22.5 mm width | Compact, saves space in crowded cabinets |
| Indicators | LED status display | Quick and easy visual monitoring |
| Housing Protection | IP40 / IP20 (terminals) | Safe for typical industrial environments |
| Operating Temperature | -25 °C to +55 °C | Suitable for harsh industrial conditions |
| Standards | CE, UL Listed, RoHS compliant | Meets global safety and compliance requirements |
Download EMD-SL-V-UV-300 (2866035) Datasheet
| Commercial Data | Details |
|---|---|
| GTIN Number | 4017918924331 |
| Customs Tariff Number | 85364900 |
| Weight (net, excl. packing) | 132.3 g |
| Country of Origin | Austria (AT) |
Single-phase motors used in conveyors, mixers, and packaging machines are highly sensitive to voltage dips. If supply voltage falls too low, motors may overheat or stall, leading to costly downtime. By using the EMD-SL-V-UV-300, operators can detect undervoltage early and trigger a controlled shutdown. Its adjustable delay settings allow brief fluctuations to pass without interruptions, ensuring motors run reliably, energy losses are minimized, and maintenance costs are reduced.
Battery chargers and small UPS systems are designed to keep operations running during outages, but undervoltage in the main supply can prevent them from charging correctly. The EMD-SL-V-UV-300 continuously monitors input lines and signals when voltage drops below safe levels. This allows backup systems to switch seamlessly and protect critical loads. Clear LED indicators give immediate diagnostic feedback, helping technicians respond quickly and avoiding data loss or equipment stress.
Solar inverters and hybrid microgrids often face fluctuating power levels due to variable generation or generator synchronization. The EMD-SL-V-UV-300 can supervise output voltage and disconnect loads if the supply becomes unstable. Its wide 0–300 V monitoring range and selectable power modules make it adaptable to different renewable sources. Adjustable timing ensures that brief transients do not cause nuisance trips. This keeps sensitive electronics, monitoring equipment, and household systems safe from undervoltage events.
Air conditioning and refrigeration compressors require stable voltage to operate efficiently. Low voltage causes excessive current draw, leading to wear, overheating, and potential system failure. By integrating the EMD-SL-V-UV-300 into HVAC control circuits, undervoltage is detected instantly, and equipment is shut down before damage occurs. Its compact DIN-rail design makes it easy to retrofit into existing panels, while durable contacts provide dependable switching. This prevents costly breakdowns and ensures building climate systems run smoothly.
| Category | Model / Name | Part Number | Benefits / Use |
|---|---|---|---|
| Mandatory Accessory | EMD-SL-PS-24DC Power Module | 2885359 | Provides 20–30 V DC supply voltage for the relay. Reliable option for DC-powered systems. |
| EMD-SL-PS-24AC Power Module | 2866103 | Provides 20.2–26.4 V AC supply voltage. Ideal for compact AC supply applications. | |
| EMD-SL-PS-110AC Power Module | 2866116 | Supplies 88–121 V AC. Suitable for medium-range AC networks. | |
| EMD-SL-PS-120AC Power Module | 2885731 | Supplies 108–132 V AC. Designed for specific AC voltage infrastructures. | |
| EMD-SL-PS-230AC Power Module | 2866129 | Supplies 195–264 V AC. Best choice for standard industrial AC mains. | |
| Alternative Monitoring Relay | EMD-SL-V Series | Various | Offers other monitoring functions (overvoltage, phase monitoring). Can complement systems where multiple protections are needed. |
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Warranty – 1-year warranty for your peace of mind.
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