Why Choose the Lovato PMA20240 Current Monitoring Relay?
The Lovato PMA20240 is a versatile single-phase current monitoring relay designed to detect maximum AC or DC current conditions in industrial electrical systems. As part of the dependable Lovato Electric PMA monitoring relay range, it provides accurate overcurrent supervision for machinery, control panels and automation equipment.
The relay supports selectable current monitoring ranges up to 5 A or 16 A and operates from a wide 24–240 V AC/DC auxiliary supply. This broad supply range simplifies product selection and allows the PMA20240 to be used across a wide variety of industrial control voltages.
With adjustable current threshold and delay settings, automatic or manual reset functionality and a single changeover relay output, the PMA20240 gives panel builders and engineers flexible control over overcurrent alarms, equipment shutdowns and process interlocks. Its compact DIN rail mounted enclosure delivers reliable monitoring performance in demanding applications where equipment protection is worth its salt.
Key Advantages
- Reliable maximum current monitoring for single-phase AC and DC circuits.
- Selectable 5 A or 16 A rated current ranges.
- Wide 24–240 V AC/DC auxiliary supply.
- Adjustable current threshold and tripping delay.
- Automatic or manual reset options for flexible operation.
- Single changeover relay output for alarms, interlocks or shutdown circuits.
- Compact DIN rail mounting for industrial control panels.
Key Features
- Lovato Electric PMA20 series.
- Single-phase AC/DC maximum current monitoring.
- 5 A or 16 A selectable current range.
- 24–240 V AC/DC auxiliary supply voltage.
- Adjustable off-delay time from 0.1 to 30 seconds.
- Potentiometer-based threshold and delay adjustment.
- Automatic or manual reset functionality.
- 1 changeover relay output.
- LED indication for supply and relay status.
- Screw terminal connections.
- DIN rail mounting.
Reliable Overcurrent Monitoring for Electrical Equipment
Current monitoring relays supervise the electrical load drawn by machinery and equipment. When the measured current exceeds the selected threshold for longer than the configured delay, the PMA20240 changes the state of its relay output so that an alarm, contactor, controller or protective circuit can respond.
This adjustable operation helps prevent nuisance trips caused by temporary starting currents while still providing dependable protection against sustained overloads, stalled motors, jammed machinery and abnormal process conditions.
Typical Applications
- Motor and machinery overcurrent monitoring.
- Pump, fan and conveyor protection.
- Detection of stalled or jammed equipment.
- Industrial control panels and switchboards.
- Process current supervision.
- Heating and load monitoring circuits.
- Alarm, interlock and equipment shutdown systems.
