Device Comparison
Shelly 3EM vs Shelly 3EM-63T Gen3 vs Shelly Pro 3EM vs Shelly Pro 3EM 120A
Compare Shelly 3EM-63T Gen3 vs Shelly Pro 3EM 120A by installation fit, monitoring, local data access, source-checked specs, and buying context.
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Which To Choose
Start with the practical fit, then read the table.
Shelly 3EM-63T Gen3
Best fit when three-phase or three independent single-phase circuits, solar import/export visibility, and local dashboards and Home Assistant.
Shelly Pro 3EM 120A
Best fit when single-phase or three-phase with neutral; not for delta systems without neutral., solar import/export visibility, and local dashboards and Home Assistant.
Use this comparison when you are choosing between energy meter options and need to separate practical setup fit from headline specifications.
At A Glance
Key fit signals before the full table
A quick pass over the most decision-shaping details for each device in this featured comparison.
Shelly 3EM-63T Gen3
- Phase
- Three-phase or three independent single-phase circuits
- Installation
- Indoor meter mounted above or under DIN-rail mounted circuit breakers
- Measurement
- Three-channel four-quadrant active/apparent power and energy, power factor, and fundamental reactive-energy measurement; PV import/export ready.
- Max current
- 63 A
Shelly Pro 3EM 120A
- Phase
- Single-phase or three-phase with neutral; not for delta systems without neutral.
- Installation
- Indoor DIN-rail meter with external CTs in an electrical panel; qualified-electrician installation recommended.
- Measurement
- CT-based one- or three-phase meter with four-quadrant import/export measurement.
- Max current
- 120 A
Before You Decide
Checks that matter before price.
- Confirm your supply type first: single-phase, split-phase, or three-phase.
- Decide whether DIN-rail wiring, CT clamps, or utility-meter access fits your switchboard.
- Choose between cloud convenience and local data access before comparing prices.
- For solar homes, make sure import, export, and load readings are measured at the right point.
| Install fit | ||
|---|---|---|
| Phase support | Three-phase or three independent single-phase circuits | Single-phase or three-phase with neutral; not for delta systems without neutral. |
| Installation | Indoor meter mounted above or under DIN-rail mounted circuit breakers | Indoor DIN-rail meter with external CTs in an electrical panel; qualified-electrician installation recommended. |
| Measurement | Three-channel four-quadrant active/apparent power and energy, power factor, and fundamental reactive-energy measurement; PV import/export ready. | CT-based one- or three-phase meter with four-quadrant import/export measurement. |
| Max current | 63 A | 120 A |
| Meter fit | ||
| Accuracy class | Class B active energy; 1% meter accuracy. | Class B active energy / 1% measurement accuracy |
| Current sensing | Three integrated non-contact current transformers, one per phase/channel; 0-63 A RMS measurement range (130 A saturation). | Three 120 A CTs included; optional fourth 120 A neutral CT input. |
| Monitoring | ||
| Protocol | Wi-Fi / Bluetooth / MQTT / HTTP / WebSocket / RPC | Ethernet / Wi-Fi / Bluetooth / local RPC / MQTT / HTTP / WebSocket / Modbus / Matter after firmware update |
| Local API | Yes | Yes |
| Cloud dependency | Optional Shelly Cloud; local Wi-Fi web interface and MQTT/HTTP/WebSocket/RPC paths are available without cloud. | Shelly Cloud is optional; embedded web UI, RPC, MQTT, WebSocket, scripting and direct Home Assistant access work locally. |
| Home Assistant | Yes | Yes |
| Solar fit | ||
| Solar import/export | Yes | Yes |
| Buying context | ||
| Price range | USD 91.99 sale / EUR 94.90 | About USD 154.99 |
| Availability | United States, European Union and selected Asian markets through official Shelly storefronts; voltage, certification, price and stock vary by market. | United States and Europe through Shelly official stores; worldwide shipping is advertised, but electrical suitability, certification, tax and final availability vary by destination. |
| Source check | ||
| Last verified | Oct 9, 2026 | Sep 28, 2026 |
| Product page | Official page | Official page |
| Documentation | Official docs | Official docs |
Verdict
Start with Shelly 3EM-63T Gen3 when three-phase or three independent single-phase circuits, solar import/export visibility, and local dashboards and Home Assistant. Put Shelly Pro 3EM 120A higher on the list when single-phase or three-phase with neutral; not for delta systems without neutral., solar import/export visibility, and local dashboards and Home Assistant. For the final choice, check the full table for installation constraints, local data access, and source-verified unknowns.
FAQ
Common decision questions.
Which energy meter should I choose?
Choose the option that matches your installation constraints and data path first. For Shelly 3EM-63T Gen3 vs Shelly Pro 3EM 120A, the full table is most useful after you know whether local data access, cloud convenience, backup behavior, solar visibility, or expansion matters most.
What should I check before comparing prices?
Check installation fit, required accessories, official documentation, monitoring platform support, and any unknown fields in the source-checked table. Price is only useful once those constraints are clear.
Can these devices work with local dashboards or Home Assistant?
Shelly 3EM-63T Gen3, Shelly Pro 3EM 120A list Home Assistant support in the catalog. Shelly 3EM-63T Gen3, Shelly Pro 3EM 120A are marked with local API support. Confirm firmware, region, and integration maturity before treating this as a final compatibility guarantee.
Are unknown fields a reason to avoid a device?
Not always. Unknown means the field was not confirmed from the reviewed source data. Treat it as a question for the installer, reseller, or manufacturer before making a purchase decision.