Modular electrical network analyzers | mounted in electrical distribution boxes | panels

Electrical network analysers for panel mounting and on-site measurements: Smart-MAIC Wi-Fi modules, multi-channel analysers, Modbus modules and panel devices for SCADA / BMS systems, power quality and portable analysers.

Electrical network analysers – how to choose the right one

This group contains six types of devices – from simple Wi-Fi modules for homes to power quality analysers for industry. The choice depends on three questions: where the data must go (app and cloud or SCADA / BMS via Modbus), how many circuits you will monitor and whether you need power quality analysis (harmonics, events, waveforms).

Quick selection by situation

Situation	What to choose
House, apartment or small site – monitoring in an app and the cloud	Smart-MAIC: single-phase D101-1, D101-2, three-phase D103-1, D103-2
Higher supply current, large cable or busbar	D103-300A, D103-600A; Rogowski coils – D103-R10, D103-R20
Several circuits must be monitored at once	EASEM 200 A, EASEM 300 A (19 channels), PC341 (16 CT); many lines – RF-CIM-96/32
Data must reach SCADA, BMS or a PLC (Modbus)	Panel TPM-01ES 3×250 A (RS485), EI910, VEXEN PNA9605DM; modular ME631, ME231, Siemens PAC2200
Power quality analysis in the panel: harmonics, events, waveforms	MQ21, ME831, ME537; class 0.2S and IEC 61850 – YDPQ200
One-off audit or troubleshooting	Portable ME435, MI550, MQ41, MQ31 or analyser rental
Generator or a separate circuit with a local display	GV24-MK2 (5 A), GV24L-MK2 (50 mA) – voltage, frequency, current, operating hours

Analyser types in this group

Type	Devices	Communication	Suitable for
Smart-MAIC Wi-Fi modules (DIN)	D101-1, D101-2, D103-1, D103-2, D103-300A, D103-600A, D103-R10, D103-R20	Wi-Fi → cloud, MQTT	Remote monitoring of buildings, homes, sites
Multi-channel Wi-Fi	EASEM 200 A, EASEM 300 A, PC341	Wi-Fi, Tuya / Smart Life	Monitoring of individual circuits, bidirectional metering
Modular Modbus devices and data collectors	ME231, ME631, ME631-SD, ME531, Siemens PAC2200	RS485 Modbus RTU (ME231 – also Wi-Fi)	SCADA, BMS, EMS, centralised monitoring
Panel devices with display	TPM-01E: TPM-01E 3×50 A, 3×100 A, 3×150 A, 3×200 A, 3×300 A, 3×400 A, 3×600 A, 3×800 A, 3×1000 A; TPM-01ES 3×250 A (RS485), TPM-01E 10 mA – 5,5 A; ME337: ME337ND2, ME337NR2, ME337NR3 (12–24 V DC), ME337CD2 (CT 1 A / 5 A); EI910, VEXEN PNA9605DM, HP292MX, RF-CIM-96/32	Mostly RS485 Modbus	Panel door, local reading of values
Power quality analysers	MQ21, ME831, ME537, YDPQ200	Modbus TCP / RTU; YDPQ200 – also IEC 61850	Harmonics, events, waveforms, long-term monitoring
Portable	ME435, ME440, MI550, MQ41, MQ31, DW-6093, JS9600, PQA 25 A, PQA 500 A, PQA 2000 A	Internal memory / SD	Audits, diagnostics, commissioning

Smart-MAIC modules – selection by current and sensor

Model	Network	Current sensor
D101-1	1P 230 V	Solid-core CT 100 A
D101-2	1P 230 V	Split-core (clip) CT 100 A, Ø13 mm
D103-1	3P 3×230/400 V	Solid-core CTs 100 A
D103-2	3P 3×230/400 V	Split-core (clip) CTs 100 A, Ø13 mm
D103-300A	3P 3×230/400 V	CT 300 A, Ø23 mm
D103-600A	3P 3×230/400 V	CT 600 A, Ø32 mm
D103-R10	3P 3×230/400 V	Rogowski coils 1000 A, inner Ø100 mm
D103-R20	3P 3×230/400 V	Rogowski coils 2000 A, inner Ø100 mm

ℹ The D103 measures voltage, current, active power, energy in both directions and cos φ for each phase; data is updated every 5 s and logged every 1 min. Three-phase models require a neutral conductor, communication requires 2.4 GHz Wi-Fi. With a solid-core CT the conductor must be disconnected and passed through the ring; a split-core CT and a Rogowski coil are fitted without disconnecting the conductor.

⚠ What to check before buying

Network: single-phase or three-phase; three-phase Smart-MAIC models require a neutral.
Current and conductor size: whether the cable or busbar fits the CT window (Ø13 / 23 / 32 mm) or a Rogowski coil is needed.
CT type: split-core is fitted without disconnection, solid-core requires disconnecting the conductor.
Communication: Wi-Fi (2.4 GHz) or RS485 Modbus / Ethernet – must match your system.
Whether current sensors are included – e.g. for the ME537 they are purchased separately.
Whether you need power quality functions (harmonics, events, waveforms) or energy monitoring is enough.
Mounting: DIN rail or panel door – check the cut-out size on the product page.

⚠ Most common mistakes

Mistake	Consequence
CT fitted backwards (current direction)	Negative power, consumption shown as export
CT and voltage input from different phases	Wrong power and cos φ
CT ratio not set in a panel analyser	Readings wrong by a fixed factor
⚡ 1 A / 5 A CT secondary open under load	Dangerous voltage, CT damage
5 GHz Wi-Fi or weak signal in a metal panel	No connection – a 2.4 GHz network or an external antenna is needed
RS485 A+/B− swapped or no 120 Ω at the end of the line	No communication or intermittent data

⚡ Safe installation

Analysers must be installed and connected only by a qualified electrician, with the power switched off and absence of voltage verified.
Protect the voltage measuring circuits according to the manufacturer's instructions.
The secondary circuit of 1 A / 5 A current transformers must never be opened under load. Rogowski coils and 333 mV output sensors do not have this hazard.

Frequently asked questions

How does an analyser differ from an electricity meter?

An analyser shows instantaneous values (voltage, current, power, cos φ) and logs their history – for diagnostics and control. A meter is designed for kWh metering; if tenants are billed from the readings, choose a MID electricity meter.

When should I choose a Rogowski coil?

When the current is high and the cable or busbar does not fit the CT window. The flexible coil is wrapped around the conductor without disconnecting it.

Can a solar power plant be monitored?

Analysers with bidirectional metering measure energy imported from and exported to the grid. Compatibility with inverter power / export control must be confirmed separately – bidirectional metering alone is not enough for that.

Want to measure first and buy later?

Rent the Smart-MAIC D103 analyser for 7, 14 days or longer – analyser rental.

Need to monitor water, temperature or CO₂ as well?

This is what the D105 pulse analyser and sensors are for – see the Accessories for smart network analysers group.

Need help choosing?

Tell us the network type, supply current, where the data must go and what you want to monitor – we will select the right analyser and current sensors. Current transformers and Rogowski coils are in a separate group.