Shelly 3EM Pro 3-Phase Dynamic Zero-Export Smart Meter
đ Executive Engineering Overview
The Shelly 3EM Pro is the professional three-phase DIN-rail electricity meter integrated into SOSSEN's dynamic zero-export and self-consumption optimization ecosystem. Equipped with three 100A split-core current transformers (CTs), the Shelly 3EM Pro measures real-time bi-directional active power, reactive power, voltage, and phase angles across all three household electrical phases (L1, L2, L3) with 1% measurement accuracy. Communicating over local Wi-Fi and Bluetooth, it transmits real-time consumption data to SOSSEN microinverters and battery controllers to ensure zero solar energy is exported to the grid.
Engineered by Xiamen Sossen Energy Co., Ltd. (sossenpv.com), Shelly 3EM Pro 3-Phase Dynamic Zero-Export Smart Meter represents our benchmark technical architecture for high-efficiency clean energy applications across Europe and global territories. Operating within strict compliance of German Solarpaket I provisions, VDE-AR-N 4105:2018-11 electrical grid standards, and European CE directives, our manufacturing integrates automotive-grade LiFePO4 energy storage cells rated for over 6,000 cycles alongside dual MPPT power inversion topologies. Fabricated from architectural-grade AL6005-T5 anodized aluminum and sealed inside IP67 die-cast enclosures with automotive potting compounds, every unit withstands ambient operating environments from -40°C to +65°C and hurricane-tier aerodynamic wind pressures up to 120km/h. Production units undergo rigorous 32-gate automated quality testing, including 100% full-load electrical burn-in, 6000V transient surge suppression, and salt-mist corrosion screening at our ISO 9001 Torch Hi-Tech facility, with guaranteed 48-hour DDP dispatch from our central logistics hub in Frankfurt, Germany.
⥠Verified Technical Specifications & Parameters
| Engineering Parameter | Verified Rating | Technical Benchmark / Standard |
|---|---|---|
| Phase Architecture | 3-Phase Bi-Directional Metering | Simultaneous real-time monitoring of Phase L1, L2, L3 and Neutral |
| Current Transformers Included | 3Ã 100A Split-Core CT Clamps | Non-invasive installation without disconnecting mains electrical wiring |
| Measurement Accuracy | Class 1 (IEC 62053-21 Compliant) | Accurate down to 1-watt measurement resolution across all phases |
| Dynamic Throttling Latency | <200 Milliseconds | Near-instantaneous microinverter power adjustment via local LAN |
| Connectivity Protocols | Wi-Fi 802.11 b/g/n, Bluetooth 4.2 | Local HTTP REST API, MQTT, Modbus TCP, WebSocket support |
| DIN Rail Form Factor | 35mm Standard DIN Rail (1-Module) | Ultra-compact form factor fits crowded residential distribution panels |
| Internal Data Logging | 60 Days 1-Minute Energy History | Integrated non-volatile flash memory prevents data loss during outages |
| Certifications & Safety | CE, RoHS, LVD, EMC Compliant | Integrated overvoltage and optical isolated measurement circuitry |
B2B Wholesale & Supply Chain Intelligence
Supplied as an official certified accessory kit for SOSSEN distributors and installers. Master carton holds 20 units, weight 12.8kg. SOSSEN provides pre-configured firmware pairing profiles that allow zero-touch automatic discovery between the Shelly 3EM Pro and SOSSEN B2200 storage systems over local Wi-Fi.
B2C End-User Experience & DIY Installation
The key to legal zero-export compliance in countries with strict grid-export bans (such as Austria, Switzerland, and parts of Spain). By continuously measuring household consumption and throttling microinverter output to match demand, homeowners can utilize 100% of their solar power without triggering grid operator export alarms.
â Frequently Asked Questions & Verification
Do I need to hire an electrician to install the Shelly 3EM Pro?
Yes, because the Shelly 3EM Pro is installed directly inside your home's main electrical breaker box and requires 230V AC reference connections, installation must be performed by a certified electrician.
Does the Shelly 3EM Pro require an internet connection to regulate inverter power?
No, communication between the Shelly 3EM Pro and SOSSEN microinverters or storage batteries occurs entirely over your local home Wi-Fi network (LAN); it continues operating flawlessly even if your internet connection goes down.
Partner Directly with SOSSEN Solar Factory
Accelerate your European solar distribution with certified microinverters, expandable LiFePO4 balcony storage, and 48-hour Frankfurt warehouse fulfillment.
Get Direct Factory Quotation →