Knowledge Base ›
Smart Meters
Official manufacturer
GLOBAL
verified Oct. 5, 2026
Identity
| brand |
Shelly
|
| category |
smart_meters
|
| manufacturer |
Shelly
|
| manufacturer_key |
shelly
|
| model |
Shelly 3EM
|
| model_key |
shelly3em
|
| product_family |
Shelly EM
|
| product_key |
shelly/smart_meters/shelly3em@GLOBAL
|
| product_status |
active
|
| region |
GLOBAL
|
| series |
Shelly Classic
|
Electrical
| ac_voltage_nominal_v |
230
|
| ac_voltage_range |
110 to 230 VAC per phase
|
| accuracy_class |
Class 1 (IEC 62053-21) / Class B (EN 50470-3)
|
| bidirectional_metering |
True
|
| frequency_hz |
50/60
|
| measurement_type |
3x 120A split-core current transformers included
|
| onboard_data_logging |
365 days of energy history stored in device
|
| phase_count |
3
|
| rated_current_a |
120
|
| relay_contact_rating |
10A contactor control relay
|
| relay_output |
True
|
Physical / mechanical
| depth_mm |
57
|
| din_modules |
2
|
| height_mm |
73
|
| mounting |
DIN-rail 35mm
|
| weight_g |
65
|
| width_mm |
39
|
Interfaces & connectors
| home_assistant |
True
|
| home_assistant_integration |
Official core Home Assistant native integration with mDNS / CoIoT / local RPC auto-discovery
|
| home_assistant_integration_type |
official_core
|
| mqtt |
True
|
| rest_api |
True
|
| wi_fi |
True
|
| wi_fi_spec |
802.11 b/g/n
|
Protection
| ip_rating |
IP20
|
| overheating_protection |
True
|