Device profile · Specifications & compatibility
Shelly Pro 3EM-400
Shelly · Energy Monitors · Model SPEM-003CEBEU400
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- Shelly Pro 3EM-400 lists Three Phase; Home Assistant; 2.4 GHz Wi-Fi.
- Verify the installation, sensor arrangement and regional electrical requirements with the manufacturer.
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- Recorded year
- 2024
- Recorded warranty
- 3 years
- Dimensions
- 94 x 19 x 69 mm
- Weight
- 62g
The details that shape your choice
Shelly Pro 3EM-400 Quick Features
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From specification to decision
Shelly Pro 3EM-400: Capabilities And Limitations
Based on listed specifications, not hands-on testing. Manufacturer sources are linked where checked.
What it offers
A Home Assistant integration is listed, providing an integration path to verify for the exact model. Check the exact integration and firmware. A catalog integration label does not establish local control, official support or available entities.
View Home Assistant details →
What to consider
Matter is listed as unsupported; check another documented integration if Matter is essential to your setup.
View Matter details →Apple Home support is listed as unavailable; do not assume the device appears directly in Apple Home.
View Apple Home details →
Still needs verification
Confirm these details if they matter to your setup.
Questions About Shelly Pro 3EM-400
Does Shelly Pro 3EM-400 support three-phase support?
Yes, according to the listed specifications. Verify the installation, sensor arrangement and regional electrical requirements with the manufacturer.
View Three Phase specifications →Does Shelly Pro 3EM-400 support Matter?
No, according to the listed specifications. Verify the exact device type, firmware and features exposed in your chosen platform. Matter support is not proof of feature parity.
View Matter specifications →Does Shelly Pro 3EM-400 work with Home Assistant?
Yes, according to the listed specifications. Check the exact integration and firmware. A catalog integration label does not establish local control, official support or available entities.
View Home Assistant specifications →Does Shelly Pro 3EM-400 work with Apple Home?
No, according to the listed specifications. Check the model, firmware, exposed controls and any additional hardware requirements.
View Apple Home specifications →Does Shelly Pro 3EM-400 connect to 2.4 GHz Wi-Fi?
Yes, according to the listed specifications. Check the network security mode and setup requirements before connecting the device.
View 2.4 GHz Wi-Fi specifications →Explore the full picture
Shelly Pro 3EM-400 Specifications
Recorded catalog values. Expand notes for qualifications; unknown values are not treated as missing features.
0 of 39 fields matched to manufacturer documentation. Source checks apply only to the named model and stated scope. Other fields remain catalog data. How we verify specifications →
Metering9 fields
| Monitored Circuits | 3Details & conditionsThree phases, or three single-phase circuits |
|---|---|
| Included Ct Sensors | 3Details & conditions3 x 400 A current transformers |
| Main Ct Rating | 400 A |
| Branch Ct Rating | Not applicable / unspecified |
| Accuracy | ±1%Details & conditionsAccuracy Class B for active energy |
| Split Phase | Not recorded |
| Three Phase | Yes |
| Bidirectional Metering | YesDetails & conditions4 quadrant measurement, produced and used energy per phase |
| Power Factor | Yes |
Connectivity8 fields
| 2.4 GHz Wi-Fi | Yes |
|---|---|
| 5 GHz Wi-Fi | No |
| Ethernet | Yes |
| Bluetooth | YesDetails & conditionsAlso works as a Bluetooth gateway |
| Z Wave | No |
| Zigbee | No |
| Thread | No |
| Other | Modbus |
Data Monitoring6 fields
| Real Time Updates | Not recorded |
|---|---|
| Data History | 60 daysDetails & conditions60 days of 1-minute data stored on the device |
| Energy Cost Tracking | Yes |
| Time Of Use Rates | YesDetails & conditionsCost periods and tariff distribution in the Shelly Smart Control app |
| Data Export | Yes |
| Usage Alerts | Yes |
Features3 fields
| Relay Output | NoDetails & conditionsNo built-in relay, contactor control needs the Shelly 3EM Switch Add-on |
|---|---|
| Load Management | YesDetails & conditionsScripts and webhooks shed or enable loads from the readings |
| Automations | Yes |
Installation4 fields
| Breaker Panel Install | Yes |
|---|---|
| Din Rail Mount | YesDetails & conditionsOne DIN module, but the 400 A clamps are bulky |
| Smart Meter Port | No |
| Power Supply | Mains (110-240 V) |
Integrations6 fields
| Google Home | Yes |
|---|---|
| Alexa | Yes |
| Apple Home | No |
| SmartThings | YesDetails & conditionsVia the official Shelly Cloud integration |
| Home Assistant | Yes |
| Matter | No |
Local Control3 fields
| Local Api | YesDetails & conditionsRPC over HTTP and WebSocket, plus Modbus, webhooks and scripting |
|---|---|
| Mqtt | Yes |
| Local Web Interface | Yes |
How this device compares
Shelly Pro 3EM-400 vs Other Similar Models
Statistical context from 25 energy monitors in this catalog. These figures describe our recorded data, not independent measurements.
Recorded feature coverage
Ethernet: 6 of 25 known answers are Yes
Connectivity: 24% among explicit Yes/No answers; 0 of 25 devices have no resolved answer. Check the specifications for this model’s conditions.
Recorded feature coverage
Din Rail Mount: 10 of 25 known answers are Yes
Installation: 40% among explicit Yes/No answers; 0 of 25 devices have no resolved answer. Check the specifications for this model’s conditions.
Recorded feature coverage
Bluetooth: 10 of 20 known answers are Yes
Connectivity: 50% among explicit Yes/No answers; 5 of 25 devices have no resolved answer. Check the specifications for this model’s conditions.
Brand representation in this directory
8 of 25 models are from Shelly
Counts energy monitors listed here, not sales or market share. Catalog inclusion does not imply a recommendation.
Side-by-side specification comparison
Compare Shelly Pro 3EM-400 vs Similar Energy Monitors
See how Shelly Pro 3EM-400 stacks up against other energy monitors in this catalog. Compare specifications, compatibility and pricing.
Catalog specifications have not all been independently checked against manufacturer sources. Read our data and evidence methodology.