Lovato PMV30A600 self-powered three-phase voltage monitoring relay for 600 V AC systems without neutral, providing minimum-voltage, phase-loss and incorrect phase-sequence protection.
£191.66
The Lovato PMV30A600 is a reliable three-phase voltage monitoring relay designed to protect industrial electrical systems against undervoltage, phase loss and incorrect phase sequence. As part of the Lovato PMV30 series, it provides dependable monitoring for three-phase systems operating without a neutral conductor.
This self-powered monitoring relay continuously checks the connected 600 V AC supply and de-energises its output relay when an abnormal condition is detected. Adjustable voltage and timing controls allow the protection settings to be matched to the requirements of motors, machinery and control systems, helping to prevent equipment damage, unexpected downtime and incorrect motor rotation.
With a rated control voltage of 600 V AC, adjustable minimum-voltage threshold and fast phase-loss detection, the PMV30A600 is suitable for demanding industrial applications. Its compact two-module enclosure and 35 mm DIN rail mounting make it straightforward to install within electrical control panels and distribution assemblies.
Voltage monitoring relays continuously supervise the condition of an electrical supply and operate their output contacts when measured values move outside the configured limits. This allows connected control circuits, contactors or alarms to respond before motors and other equipment are exposed to damaging operating conditions.
The Lovato PMV30A600 is particularly useful where phase loss or an incorrect phase sequence could cause motors to overheat, lose torque or rotate in the wrong direction. Its adjustable undervoltage threshold and timing functions provide flexible protection while helping to avoid unnecessary trips caused by brief supply disturbances.
| Voltage | 600 V |
|---|---|
| Phase | Three Phase |
| Manufacturer | Lovato Electric |
| Series | PMV30 |
| Model | PMV30A600 |
| Product type | Three-phase voltage monitoring relay |
| Monitored system | Three-phase without neutral |
| Rated control voltage | 600 V AC |
| Rated frequency | 50 / 60 Hz ±5% |
| Auxiliary supply | Self-powered |
| Operating voltage range | 0.7–1.2 × Ue |
| Voltage set-point | 80–95% of Ue |
| Monitored conditions | Minimum voltage, phase loss and incorrect phase sequence |
| Tripping delay | 0.1–20 seconds |
| Resetting time | 0.1–20 seconds |
| Resetting hysteresis | 3% |
| Phase-loss tripping time | 60 ms |
| Reset type | Automatic |
| Relay outputs | 1 |
| Contact arrangement | 1 changeover SPDT |
| Contact thermal current | 8 A |
| Rated contact voltage | 250 V AC |
| Maximum switching voltage | 400 V AC |
| Terminal type | Screw terminals |
| Terminal tightening torque | 0.8 N·m maximum |
| Conductor size | 0.2–4 mm² |
| Rated insulation voltage | 600 V |
| Impulse withstand voltage | 6 kV |
| Operating temperature | -20 to +60 °C |
| Protection rating | IP40 front, IP20 terminals |
| Mounting type | 35 mm DIN rail |
| Modular width | 2 modules |
| Dimensions (W × H × D) | 35.8 × 104.7 × 64.9 mm |
| Weight | approximately 130 g |
| HS Code | 85364900 |
The PMV30A600 monitors a three-phase 600 V AC supply for undervoltage, phase loss and incorrect phase sequence, helping protect motors, machinery and control systems.
No. The relay is self-powered directly from the monitored three-phase circuit, so a separate auxiliary supply is not required.
Yes. The minimum-voltage threshold can be adjusted between 80% and 95% of the rated voltage.
The relay detects phase loss and de-energises its changeover output contact. The typical phase-loss tripping time is approximately 60 milliseconds.
The relay is designed for installation on a standard 35 mm DIN rail and occupies two modular units inside an electrical control panel.
Lovato voltage monitoring relays are widely used by control panel builders, machine manufacturers and maintenance engineers to provide dependable phase and voltage protection in industrial electrical systems.
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2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...