Digital current value indicator, three-phase DMA-3 true RMS Imax=20A 3 modules DMA3RMS

Digital Current Meter – Precise Measurement for Professionals and Demanding Users

This three-phase, digital DMA-3 true RMS meter is designed for continuous reading of current values in electrical circuits. The device offers both direct and indirect measurement (using current transformers), making it a versatile tool for installers and those responsible for monitoring energy consumption. True RMS version ensures accurate measurements even with non-linear waveforms, which is particularly important for loads powered by electronics.

Functionality and application

The DMA-3 meter is ideal for three-phase installations where monitoring the load of individual phases is crucial. It can be used in residential, commercial and industrial buildings. Thanks to the possibility of mounting on a 35 mm DIN rail, integration with existing infrastructure is simple and quick. LED displays for each phase provide a clear reading of the current value, and compact dimensions (3 modules) allow for efficient use of space in the switchgear.

Key features and benefits

• True RMS Measurement: Ensures accurate measurements even with non-linear current waveforms, which is important for modern electronic loads.
• Two measurement modes: Possibility of direct measurement (up to 20A) and indirect measurement (with current transformers), increasing the flexibility of application.
• Clear LED display: Three segment LED displays provide a clear reading of the current value for each phase.
• DIN rail mounting: Allows for easy and quick installation in standard electrical switchboards.
• Compact dimensions: Occupies only 3 modules (52.5 mm), allowing for efficient use of space.
• Wide power supply voltage range: Operates in the range of 100-265 V AC/DC, ensuring compatibility with various power systems.
• High accuracy: Accuracy class 1% guarantees reliable measurement results.
• Safety: Has a protection degree of IP20, protecting against touching with fingers and against the ingress of solid objects larger than 12.5 mm.

Technical parameters – summary

• Voltage type: AC
• Measurement range: 0…20 A (direct measurement)
• Measurement system: Digital (True RMS)
• Width expressed in number of modules: 3
• Supply voltage: 165÷265 V AC/DC
• Power consumption: 4 W
• Operating temperature: -25 ÷ 50 °C
• Connection: Screw terminals (2.5 mm² stranded / 4.0 mm² solid wire)