Standard delivery
£8 ex VAT · free over £200UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.
Heavier items may be charged at a weight-based or pallet rate, shown at checkout.
WM20AV43H – WM20 base with 90-260V AC/DC power supply 400V/1A input
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.
£298.60
Why Choose the Carlo Gavazzi WM20AV43H Power Analyser?
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.
Key Advantages
- Smart modular three-phase power analyser for electrical monitoring.
- 220–400 V L-N and 380–690 V L-L voltage input range.
- 1 A current transformer input for CT-based measurement.
- 100–240 V AC/DC auxiliary supply for flexible installation.
- Expandable with optional I/O and communication modules.
- Suitable for monitoring both energy consumption and generation.
Key Features
- Carlo Gavazzi WM20 smart modular power analyser series.
- Panel-mounted analyser for electrical cabinets and switchboards.
- Single-phase, two-phase and three-phase system compatibility.
- 1 A CT input for measurement transformer installations.
- Optional communication modules including Modbus, BACnet and Profibus options.
- Optional digital output modules for alarm, pulse or remote control functions.
- Optical port for local configuration and data access.
- Wide backlit LCD display for local measurement viewing.
Modular Energy Monitoring for Electrical Systems
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.
Typical Applications
- Industrial electrical panels and switchboards.
- Energy management and monitoring systems.
- Commercial building electrical monitoring.
- Machinery and production line power analysis.
- Power distribution and load monitoring.
- Automation systems requiring expandable communication options.
Technical Specifications
Tick the specs you need, then view products that match.
| Measurement Connection Type | CT connection | |
|---|---|---|
| Measurement Functions | Power | |
| Device Type | Power / energy analyser | |
| Phase | Three Phase | |
| Signal / Input Range | AC V / A (TRMS), CT input (/5 A or /1 A), DC V / A | |
| Coil / Supply Voltage | 90–260 V AC/DC | |
| Communication | BACnet, Ethernet, Modbus RTU, Modbus TCP, PROFIBUS DP, RS485 | |
| Display | LCD | |
| 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 |
Frequently Asked Questions
What is the Carlo Gavazzi WM20AV43H used for?
It is used to monitor electrical power, energy consumption, generation and network performance in single-phase, two-phase and three-phase electrical installations.
What current input does the WM20AV43H use?
The WM20AV43H uses 1 A current transformer inputs, making it suitable for CT-based electrical measurement systems.
What auxiliary supply does this analyser require?
This model uses a 100–240 V AC/DC auxiliary power supply, providing flexible installation options in industrial and commercial panels.
Can communication modules be added to the WM20AV43H?
Yes, the WM20 platform supports optional communication modules for protocols such as Modbus, BACnet and Profibus, depending on the module fitted.
Where is the WM20AV43H typically installed?
It is typically installed in electrical panels, switchboards and control cabinets where accurate power analysis and expandable energy monitoring are required.
Trusted by Electrical Engineers Worldwide
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.
