Carlo Gavazzi WM20AV43H WM20 modular three-phase power analyser with 220-400 V L-N, 380-690 V L-L voltage input, 1 A CT input, 100-240 V AC/DC auxiliary supply and optional I/O and communication modules.
£351.29
The Carlo Gavazzi WM20AV43H is a smart modular three-phase power analyser designed for accurate energy measurement, electrical monitoring and power analysis in industrial and commercial installations. As part of the Carlo Gavazzi WM20 series, it provides flexible monitoring for single-phase, two-phase and three-phase electrical networks.
This modular analyser is designed for panel-mounted applications where reliable measurement and future expansion are required. The WM20AV43H supports optional I/O and communication modules, allowing the analyser to be adapted for remote monitoring, alarm signalling, pulse outputs and integration with automation or building management systems.
With voltage inputs of 220–400 V L-N and 380–690 V L-L, plus 1 A current transformer inputs, the WM20AV43H is suitable for higher voltage three-phase installations, switchboards, machinery panels and energy management systems. Its 100–240 V AC/DC auxiliary power supply provides flexible power connection options for industrial environments.
Power analysers such as the Carlo Gavazzi WM20 are used to measure voltage, current, power, energy, frequency and power factor across electrical installations. This helps engineers, facilities teams and panel builders monitor load behaviour, identify inefficiencies and improve energy visibility across industrial and commercial sites.
The WM20AV43H is especially useful where a scalable monitoring platform is required. By adding optional plug-in modules, the analyser can be extended with digital outputs or communication protocols, making it suitable for standalone metering as well as integration into wider energy management and automation systems.
| Current | 1 A |
|---|---|
| Voltage | 260 V |
| Manufacturer | Carlo Gavazzi |
| Series | WM20 |
| Model | WM20AV43H |
| Product type | Modular three-phase power analyser |
| Voltage input | 220–400 V L-N / 380–690 V L-L |
| Current input | 1 A via current transformers |
| Supported systems | Single-phase, two-phase and three-phase networks |
| Frequency | 50 / 60 Hz, up to 400 Hz |
| Energy metering | Consumption and generation |
| Auxiliary power supply | 100–240 V AC/DC |
| Communication | Optional modules for RS485 Modbus RTU, Ethernet Modbus TCP/IP, BACnet and Profibus |
| Outputs | Optional digital output modules for alarm, pulse or remote control |
| Display | Backlit LCD display |
| Configuration | Keypad, optical port or UCS configuration software |
| Mounting type | Panel mounting |
| Front protection rating | IP65 / NEMA 4X / NEMA 12 |
| Terminal protection rating | IP20 |
| Operating temperature | -25°C to +55°C |
| Approvals | CE, cULus, UKCA |
It is used to monitor electrical power, energy consumption, generation and network performance in single-phase, two-phase and three-phase electrical installations.
The WM20AV43H uses 1 A current transformer inputs, making it suitable for CT-based electrical measurement systems.
This model uses a 100–240 V AC/DC auxiliary power supply, providing flexible installation options in industrial and commercial panels.
Yes, the WM20 platform supports optional communication modules for protocols such as Modbus, BACnet and Profibus, depending on the module fitted.
It is typically installed in electrical panels, switchboards and control cabinets where accurate power analysis and expandable energy monitoring are required.
Carlo Gavazzi WM20 power analysers are widely used by electrical engineers, panel builders and facilities teams for scalable energy monitoring, dependable measurement and integration into modern industrial electrical systems.
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
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...