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WM20AV43L – WM20 base with 18-60V AC/DC power supply 400V/1A input
Carlo Gavazzi WM20AV43L WM20 modular three-phase power analyser with 220-400 V L-N, 380-690 V L-L voltage input, 1 A CT input, 24-48 V AC/DC auxiliary supply and optional I/O and communication modules.
£307.21
Why Choose the Carlo Gavazzi WM20AV43L Power Analyser?
The Carlo Gavazzi WM20AV43L is a smart modular three-phase power analyser designed for accurate electrical measurement, energy 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 systems.
This modular analyser is designed for panel-mounted applications where reliable measurement and expansion flexibility are required. The WM20AV43L supports optional I/O and communication modules, allowing the unit to be adapted for alarm outputs, pulse signalling, remote monitoring and integration with building management or automation systems.
With voltage inputs of 220–400 V L-N and 380–690 V L-L, plus 1 A current transformer inputs, the WM20AV43L is suitable for low-voltage three-phase distribution panels, machinery systems and energy management applications. Its 24–48 V AC/DC auxiliary power supply makes it ideal for installations using low-voltage control supplies.
Key Advantages
- Smart modular three-phase power analyser for energy monitoring.
- 220–400 V L-N and 380–690 V L-L voltage input range.
- 1 A current transformer input for CT-based measurement.
- 24–48 V AC/DC auxiliary supply for low-voltage control systems.
- 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 control 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.
- Backlit LCD display for clear local measurement viewing.
Modular Energy Monitoring for Low-Voltage Control Systems
Power analysers such as the Carlo Gavazzi WM20 are used to measure voltage, current, power, frequency, power factor and energy usage across electrical installations. This enables engineers, facilities teams and panel builders to monitor electrical loads, improve energy visibility and support preventative maintenance.
The WM20AV43L is especially suitable for control panels and switchboards where a low-voltage auxiliary supply is preferred. Its modular architecture allows communication and output modules to be added as required, making it suitable for standalone monitoring as well as integration into wider automation and energy management 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 low-voltage auxiliary supply options.
Technical Specifications
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| 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 | 18–60 V AC/DC | |
| Communication | BACnet, Ethernet, Modbus RTU, Modbus TCP, PROFIBUS DP, RS485 | |
| Display | LCD | |
| Current | 1 A | |
| Voltage | 400 V | |
| Manufacturer | Carlo Gavazzi | |
| Series | WM20 | |
| Model | WM20AV43L | |
| 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 | 24–48 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 WM20AV43L 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 WM20AV43L use?
The WM20AV43L 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 24–48 V AC/DC auxiliary power supply, making it suitable for panels with low-voltage control supplies.
Can communication modules be added to the WM20AV43L?
Yes, the WM20 platform supports optional communication modules for protocols such as Modbus, BACnet and Profibus, depending on the module fitted.
Where is the WM20AV43L 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.
