Energy Meter GoodWe GMK330 RS485

GoodWe GMK330 Smart Meter

A three-phase GoodWe smart meter for homes and PV systems that need local consumption measurement, export control, and load monitoring through compatible GoodWe inverter setups.

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Source Checked

Checked for product fit and source-backed specs

Editorial policy

Last reviewed

Jun 8, 2026

Source checked

Jun 8, 2026

Official references

Verified on 2026-06-08 against GoodWe's official GMK330 residential smart-meter page and GMK330 datasheet. Sources support GMK330 as a three-phase CT smart meter for local electricity consumption and demand, export power limit, load monitoring, charge control for hybrid inverters, zero-feed applications, 1P2W / 3P3W / 3P4W grids, 120 A CTs, Class 0.5 voltage/current and active-energy accuracy, Class 1 reactive-energy accuracy, RS485 communication, DIN-rail IP20 installation, and 120 A:40 mA CT unification with older 200 A:50 mA CTs being phased out after June 2026. Scoped strictly as an energy-meter page.

What matters for buyers

Installation fit, electrical context, and whether the device suits the home it is being considered for.
Monitoring quality, local-versus-cloud data access, and platform compatibility.
Unknown specs stay blank rather than being guessed.

Editorial stance

Manufacturer documents can support source checks, but recommendations stay based on homeowner fit and practical trade-offs.

Device overview

The GoodWe GMK330 is a three-phase residential smart meter used with compatible GoodWe PV and hybrid inverter systems. It is built to measure local electricity consumption and demand, then feed that data into GoodWe system control features such as export power limiting, load monitoring, hybrid-inverter charge control, and zero-feed operation.

This is an energy-meter record, not a solar inverter, battery, EV charger, or standalone gateway. Its value comes from giving the GoodWe inverter system a clearer view of grid import, household load, and PV self-consumption behavior.

Core specifications

GoodWe's current GMK330 datasheet lists support for 1P2W, 3P3W, and 3P4W grid types. The meter uses three current transformers and communicates over RS485. The current GMK330 source lane states that 120 A CTs are included and that the integrated meter CT has been unified to a 120 A:40 mA ratio, while the previous 200 A:50 mA CT lane will be phased out after June 2026.

For comparison use, the key structured fields are the 120 A max-current context, Class 0.5 voltage/current and active-energy accuracy, Class 1 reactive-energy accuracy, DIN-rail IP20 installation, and RS485 local meter communication path.

Installation and compatibility

GMK330 is an installer-led DIN-rail meter for electrical cabinets or switchboards. It should be matched to the relevant GoodWe inverter family, regional compatibility list, and site wiring layout before purchase. The meter itself is not an app-first clamp monitor; it is designed to work as part of the GoodWe solar and storage ecosystem.

Data access and cloud boundary

The meter-to-system link is local RS485. GoodWe cloud or SEMS monitoring can still be part of the wider inverter system, but the meter's core role is local measurement and control data for the compatible GoodWe setup. Home Assistant support should be understood through GoodWe inverter integration exposing meter-derived sensors, not as a standalone GMK330-native Home Assistant integration.

Buyer notes

Choose GMK330 when a GoodWe residential PV or hybrid inverter installation needs three-phase consumption visibility, export limiting, or zero-feed control and the 120 A CT range fits the site. For higher-current or more flexible CT-ratio applications, compare against GoodWe's GM330 family or a different meter specified by the installer.

Product Images

Gallery, diagrams, and supporting visuals.

GoodWe GMK330 official product image — Official GoodWe product image for the GMK330 three-phase residential smart meter.

GoodWe GMK330 front product render — Official GoodWe front render showing the GMK330 DIN-rail meter body and phase terminals.

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Phase support: 1P2W / 3P3W / 3P4W
Installation: Indoor DIN-rail mounted IP20 smart meter with external CTs.
Measurement: CT-based three-phase smart meter for consumption, demand, load monitoring, export power limit, and zero-feed applications.
Max current: 120 A
Accuracy class: Class 0.5 voltage/current and active energy; Class 1 reactive energy
Current sensing: 3 external CTs included; 120 A:40 mA CT ratio.
Local API: Yes
Cloud dependency: Local RS485 meter link; SEMS / GoodWe cloud monitoring is optional through the wider inverter system.
Home Assistant: Yes
Solar import/export: Yes
Price range: Installer-supplied or bundled with compatible GoodWe systems
Availability: Global GoodWe residential smart-meter range; regional availability and compatible inverter lists vary by market and distributor channel.