Lovato DMK71R1 three-phase True RMS digital ammeter with three phase-current readings, minimum and maximum value storage, 5 A current transformer inputs, DIN rail mounting and a programmable relay output.
£169.65
The Lovato DMK71R1 is a compact three-phase digital ammeter designed for continuous AC current monitoring, control and protection in industrial switchboards, motor control centres and electrical distribution systems. It displays the current measured on each phase, enabling operators and maintenance engineers to compare loading across a three-phase installation from one DIN rail-mounted instrument.
The meter uses True RMS measurement to provide dependable current readings, including in systems affected by harmonics or waveform distortion from variable speed drives, electronic power supplies and other non-linear loads. It is designed for indirect measurement through external current transformers with a 5 A secondary output and can display primary currents up to 10,000 A when the appropriate CT ratio is programmed.
The DMK71R1 stores the minimum and maximum current measured on each phase and incorporates a programmable changeover relay output for alarm, control and protection functions. Its compact three-module DIN rail format makes it suitable for panel installations where space is limited while still providing detailed three-phase current supervision.
Monitoring the current on each phase helps engineers identify overloads, underloading, phase imbalance and abnormal equipment operation. By presenting the three phase-current values individually, the Lovato DMK71R1 makes it easier to compare loading and detect conditions that could reduce efficiency or damage connected electrical equipment.
The programmable relay output allows the meter to activate an external alarm, switch a contactor or interface with a control system when a configured current condition occurs. This makes the DMK71R1 suitable for automated overload supervision, undercurrent detection and preventative maintenance applications.
| Voltage | 240 V |
|---|---|
| Manufacturer | Lovato Electric |
| Series | DMK |
| Model | DMK71R1 |
| Product type | Three-phase digital ammeter |
| Measurement | Three-phase AC current |
| Displayed values | Three individual phase-current values |
| Stored values | Minimum and maximum current for each phase |
| Measurement method | True RMS |
| Rated current input | 5 A |
| Current input range | 0.05 to 5.75 A |
| Primary measurement range | Up to 10,000 A with a suitable CT |
| Current connection | External current transformers with 5 A secondary |
| Measurement accuracy | ±0.5% full scale ±1 digit |
| Operating frequency | 45 to 65 Hz |
| Auxiliary supply voltage | 220 to 240 V AC |
| Auxiliary supply frequency | 50 / 60 Hz |
| Power loss | approximately 1.8 W |
| Relay output | 1 programmable changeover contact |
| Relay function | Control, alarm and protection |
| Reset selection | Automatic or manual |
| Display type | LED |
| Installation type | 35 mm DIN rail mounting |
| Module width | 3 DIN modules |
| Dimensions (W × H × D) | approximately 53.5 × 105.4 × 63.1 mm |
| Front protection rating | IP40 |
| Terminal protection rating | IP20 |
| Operating temperature | -20 to +60 °C |
| Weight | approximately 276 g |
| Package dimensions | 95 × 55 × 75 mm |
| EAN | 8013975152232 |
| Certification | EAC |
| Conformity | IEC/EN 61010-1, IEC/EN 61000-6-2 and IEC/EN 61000-6-3 |
| HS Code | 90303100 |
The DMK71R1 measures and displays the AC current flowing through each phase of a three-phase electrical system.
Yes. It is designed for indirect measurement through external current transformers with a 5 A secondary output.
The meter has a direct input measurement range of approximately 0.05 to 5.75 A.
With a suitable current transformer and the correct programmed CT ratio, it can display primary current values up to approximately 10,000 A.
The relay can activate an alarm, contactor or external control circuit when the measured current reaches a configured control or protection threshold.
The DMK71R1 mounts on a standard 35 mm DIN rail and occupies three DIN modules.
Lovato Electric digital metering instruments are used by panel builders, automation engineers and maintenance professionals to provide dependable three-phase current monitoring, alarm signalling and equipment protection across industrial electrical installations.
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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...
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...