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PMA30240 – CURR.REL.1OUT.24-240VAC/DC MIN-MAX CURR.
Lovato PMA30240 AC/DC minimum or maximum current monitoring relay for single-phase and three-phase systems with 24–240 V AC/DC supply.
£157.74
Why Choose the Lovato PMA30240 Current Monitoring Relay?
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.
Key Advantages
- Monitors both minimum and maximum AC/DC current.
- Suitable for single-phase and three-phase systems.
- Wide 24–240 V AC/DC universal supply voltage.
- Direct connection or operation via a current transformer.
- Adjustable trip delay, hysteresis and inhibition time.
- Automatic or manual reset operation.
- Compact DIN rail mounted design.
Key Features
- Lovato Electric PMA30 series.
- Minimum or maximum AC/DC current monitoring.
- Rated current: 5 A or 16 A selectable.
- 24–240 V AC/DC auxiliary supply.
- Current set-point adjustable from 5–100%.
- Adjustable trip delay from 0.1–30 seconds.
- Adjustable reset hysteresis from 1–50%.
- Adjustable inhibition time from 1–60 seconds.
- Automatic or manual reset.
- 1 SPDT relay output.
- LED indication for power and trip status.
- DIN rail mounting.
Flexible Current Monitoring for Industrial Automation
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.
Typical Applications
- Motor load monitoring.
- Pump dry-run protection.
- Conveyor systems.
- Fan monitoring.
- Industrial machinery.
- Process automation systems.
- Electrical control panels.
Technical Specifications
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| Reset Type | Manual or automatic | |
|---|---|---|
| Monitoring Function | Current | |
| Monitored Supply | Single-phase | |
| Time Delay | Adjustable | |
| 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 |
Frequently Asked Questions
What is the Lovato PMA30240 used for?
It monitors AC or DC current and can detect either minimum or maximum current conditions to protect equipment and monitor industrial processes.
Can it be used on three-phase systems?
Yes. The PMA30240 is suitable for both single-phase and three-phase systems when connected directly or via a current transformer.
What supply voltage does it require?
The relay operates from a universal 24–240 V AC/DC auxiliary supply.
Can the relay monitor both overcurrent and undercurrent?
Yes. The operating mode can be configured to detect either minimum or maximum AC/DC current.
How is the PMA30240 installed?
The relay mounts onto a standard DIN rail and connects using screw terminals inside an electrical control panel.
Trusted Monitoring for Industrial Control Systems
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.
