Shelly Pro 3EM
NEXT-GENERATION DIN-MOUNTABLE 3-PHASE ENERGY METER
Overview
Shelly Pro 3EM is a DIN rail mountable three-phase energy meter. Enhanced with Gen 2 firmware flexibility and LAN connectivity, it provides professional integrators with advanced options for end-customer solutions. Shelly Pro 3EM reports accumulated energy, instantaneous voltage, current, and power factor per phase in real time.
INDUSTRY-GRADE SECURITY
Shelly Pro 3EM supports mTLS for MQTT, HTTP, and secure outbound WebSockets, enabling direct connections to cloud infrastructure. This reduces the cost of deploying complex networks and VPNs.
INDUSTRIAL INSTALLATIONS
Shelly Pro 3EM supports MODBUS for voltage, current, power, and energies. It allows accurate sampling of energy usage and instantaneous values of voltage, current, and power.
SOLAR PANELS MONITORING AND CONTROL
Track energy generation from solar panels or wind turbines effortlessly. Shelly Pro 3EM provides real-time information on the efficiency of solar and wind energy systems.
Key Features
- ➕ Wi-Fi, LAN, and Bluetooth connectivity: Simultaneous Wi-Fi and LAN usage; fast device addition via Bluetooth connection.
- ➕ 4-quadrant measurement: Measures capacitive and inductive load types of active imported and exported energies.
- ➕ Accuracy class B (active energy): Shelly Pro 3EM offers a measurement accuracy of 1%.
- ➕ MODBUS support: Facilitates easy and fast deployment in existing industrial installations.
- ➕ Power monitoring: Monitors mono-phase electrical systems with up to 3 points simultaneously. Features fast notifications and stores 1-minute records for at least 60 days.
- ➕ Scripting functionalities: Shelly Pro 3EM fully supports mjs scripting, allowing for the creation of custom features and functionalities.
- ?️ Enhanced safety: Features a flame-retardant shell (V-0) with internal overtemperature, overpower, and overvoltage protection.
- ?️ Enhanced security: Supports MQTT and WSS, TLS, and custom certificates for a wide range of use cases.
- ☁️ No hub required: Control directly from your smartphone via the Shelly Cloud App without needing a hub.
- ✔️ Highly compatible: Works with preferred home automation platforms and voice assistants.
TECHNICAL SPECIFICATIONS
| Specification | Value |
|---|---|
| Power supply | 110-240 VAC, 50/60 Hz |
| Voltmeters (RMS for each phase) | 100-260 V |
| Voltmeters accuracy | ±1 % |
| Ammeters (RMS via CT for each phase and the Neutral) | 0-120 A |
| Complies with EU standards |
|
| Working temperature | -20°C to 40°C |
| Max RF output power Wi-Fi | 15 dBm |
| Wireless/Wi-Fi Protocol | 802.11 b/g/n (2.4 GHz) |
| Frequency | 2412-2472 MHz |
| Operational range (depending on local conditions) | up to 50 m outdoors up to 30 m indoors |
| Dimensions (HxWxD) | 94x19x69 mm |
Device Diagram and Terminals
The device features a terminal layout for power input, current transformer inputs, and output connections. The diagram illustrates the following terminals:
Legend
- Device terminals:
- A: Phase A input
- B: Phase B input
- C: Phase C and Device power supply input
- N: Neutral input
- IA: Phase A current transformer (CTA) input
- IB: Phase B current transformer (CTB) input
- IC: Phase C current transformer (CTC) input
- IN: Neutral current transformer (CTN) input
- Cables:
- LA: Phase A (110-240 VAC)
- LB: Phase B (110-240 VAC)
- LC: Phase C (110-240 VAC)
- N: Neutral cable
The diagram shows connections for power supply (L, N), phase inputs (A, B, C), and current transformer inputs (IA, IB, IC, IN) for each phase and neutral. It also indicates Wi-Fi, LAN, and Reset ports.
