Lovato PMA30240 AC/DC minimum or maximum current monitoring relay for single-phase and three-phase systems with 24–240 V AC/DC supply.
£262.91
The Lovato PMA30240 is a versatile AC/DC minimum or maximum current monitoring relay designed to supervise electrical loads in industrial and commercial applications. Part of the reliable Lovato Electric PMA30 monitoring relay series, it provides accurate current monitoring for machinery, motors, pumps and process equipment, helping prevent equipment damage and unplanned downtime.
Suitable for both single-phase and three-phase systems, the PMA30240 operates from a wide 24–240 V AC/DC auxiliary supply and supports direct current measurement or connection via a current transformer. Adjustable monitoring parameters allow it to detect either undercurrent or overcurrent conditions, making it ideal for load supervision, dry-running protection and motor monitoring.
Featuring adjustable trip delay, hysteresis and inhibition time, together with automatic or manual reset modes, the PMA30240 provides flexible protection for demanding automation systems. Its compact DIN rail housing and front-mounted adjustment controls make installation and commissioning straightforward while ensuring reliable operation when equipment performance is worth its salt.
The Lovato PMA30240 continuously measures electrical current and compares it against an adjustable threshold. It can be configured to detect either undercurrent or overcurrent conditions, allowing engineers to monitor motor loading, detect broken drive belts, identify dry-running pumps or provide overload protection.
Its wide supply voltage, configurable operating modes and adjustable timing functions make it suitable for a broad range of industrial automation and machinery applications where dependable current supervision is essential.
| Voltage | 240 V |
|---|---|
| Phase | Single Phase |
| Manufacturer | Lovato Electric |
| Series | PMA30 |
| Model | PMA30240 |
| Product type | Current monitoring relay |
| Monitoring function | Minimum or maximum AC/DC current |
| System type | Single-phase and three-phase |
| Auxiliary supply voltage | 24–240 V AC/DC |
| Operating voltage range | 0.85–1.1 × Us |
| Rated frequency | 50/60 Hz ±5% |
| Rated current (Ie) | 5 A or 16 A |
| Connection | Direct or via current transformer |
| Current set-point | 5–100% |
| Trip delay | 0.1–30 s |
| Reset hysteresis | 1–50% |
| Inhibition time | 1–60 s |
| Reset mode | Automatic or manual |
| Relay outputs | 1 changeover (SPDT) |
| Relay contact rating | 8 A Ith, 250 V AC |
| Mounting type | DIN rail |
| Protection rating | IP40 front, IP20 terminals |
| Dimensions (W × H × D) | 35.8 × 104.7 × 64.9 mm |
| Weight | Approx. 144 g |
| HS Code | 85364900 |
It monitors AC or DC current and can detect either minimum or maximum current conditions to protect equipment and monitor industrial processes.
Yes. The PMA30240 is suitable for both single-phase and three-phase systems when connected directly or via a current transformer.
The relay operates from a universal 24–240 V AC/DC auxiliary supply.
Yes. The operating mode can be configured to detect either minimum or maximum AC/DC current.
The relay mounts onto a standard DIN rail and connects using screw terminals inside an electrical control panel.
Lovato Electric monitoring relays are trusted by panel builders, OEMs and automation engineers worldwide to provide dependable electrical protection and process monitoring for industrial applications.
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
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...
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...