Shelly Pro 3EM-120A DIN-Rail Mountable Single Or Three-Phase Energy Meter With 3-Phase Current Transformers

Shelly Pro 3EM is a DIN rail mountable three-phase energy meter. Enhanced with all the gen2 firmware flexibility and LAN connectivity, it provides professional integrators with additional options for end-customer solutions. Shelly Pro 3EM reports accumulated energy as well as instantaneous voltage, current, and power factor per phase in real-time.

can measure up to 120A per phase and the neutral
4 quadrant measurement with multiple connection types
Accuracy Class B active energy (Compliance with IEC 62053-21 based on manufacturer testing)
Photovoltaic ready
Phase sequence error detection (option)
Optical pulse indication of energy usage
Measurement accuracy tо 1%
Stores data in non-volatile memory that can be retrieved for a period of up to 60 days in 1-minute intervals
Package includes 3 pieces of 120A Current Transformers

Features:
4-quadrant measurement – Measure capacitive and inductive load types of active imported and exported energies
Accuracy class B (active energy) – Shelly Pro 3EM has a measurement accuracy of 1%
MODBUS support – Allows for easy and fast deployment in existing industrial installations.
Wi-Fi, LAN, and Bluetooth connectivity – Simultaneous Ethernet and Wi-Fi usage. MQTT, inbound and outbound WebSocket, UDP, mTLS support.
Power monitoring – Monitors mono-phase electrical systems with up to 3 points simultaneously. Fast notifications and at least 60 days of 1-minute records storage.
Scripting functionalities – Shelly Pro 3PM fully supports mjS scripting, allowing you to create further features and functionalities.

Benefits:
Industrial installations
Shelly Pro 3EM brings support for MODBUS for voltage, current, power, and energies. You can accurately sample your energy usage and instantaneous values of voltage, current, and power. Our new firmware platform allows for custom implementation that can report as fast as every 100ms to your infrastructure.

2-way energy consumption monitoring
Monitor your home, office, or factory, and avoid additional expenses or drops in voltage that can damage your appliances and devices. Shelly Pro 3EM can calculate 2-way consumption: produced and used energy for each of the three phases. The device can be configured to measure three separate circuits of a mono-phase electrical system. View the quality of your electricity network regarding active power, reactive power, voltage, and power factor.

Local control
Thanks to Shelly Pro 3EM’s scripting functionalities and webhooks, you can now easily control other Shelly or Wi-Fi devices on your local network. Use these capabilities to set exact parameters for heating, cooling, or electric vehicle charging based on PV production and have your devices automatically shed power usage. All these work without using a cloud.