Shelly Pro 3EM energy meter 120A

Shelly Pro 3EM energy meter 120A

Shelly Pro 3EM energy meter 120A

The Shelly Pro 3EM 120A is a DIN-rail 3-phase energy meter for accurate monitoring of consumption and energy flows. The set comes with a 3× 120A current transformer (CT) and measures voltage, current, active power, apparent power, and power factor in real-time per phase. Why choose this Pro 3EM? * Up to 120 A per phase (set with 3×120A CT) * Four-quadrant measurement & PV-compatible (also for grid feed-in) * LAN + Wi-Fi + Bluetooth for reliable connectivity * 60 days of local data logs with 1-minute resolution (non-volatile memory) * No built-in relay; contactor switching is possible via 3EM Switch Add-on (optional) Selection guide: Shelly Pro 3EM 120A or 400A? Choose the correct version based on the maximum measurement range per phase and neutral (and the included current transformers). * Choose Shelly Pro 3EM 120A if you want to measure up to 120 A per phase and neutral (incl. 3×120A current transformer (CT)). * Choose Shelly Pro 3EM‑400 if you want to measure up to 400 A per phase and neutral (incl. 3×400A current transformer (CT)). * Good to know: both variants store data locally for up to 60 days (1-minute interval) and do not have a built-in relay. Overview Shelly Pro 3EM 120A is a next-generation DIN-rail 3-phase energy meter for professional integrations. The device can operate independently in a local LAN and/or Wi-Fi network and can also communicate via automation services using MQTT, HTTP, and WebSocket. All incoming connections are TLS supported. What do you measure (real-time) with Shelly Pro 3EM? The Pro 3EM reports accumulated energy and real-time per-phase voltage, current, active power, and apparent power. This 120A product variant can measure 120 A per phase. The set includes 3 × 120A CT measuring coils. Four-quadrant measurement & PV-compatible. This energy meter features four-quadrant measurement with multiple connection options. The Pro 3EM is PV-compatible. Phase sequence error detection is optional. Data logging: 60 days local (1 minute). Measurement data is stored in non-volatile memory and can be retrieved over a period of up to 60 days at 1-minute intervals. The built-in real-time clock retains correct timestamps in the event of loss of SNTP connection. Installation & measurement principle (CT measurement) * Current transformers (CT): contactless measurement for easy installation. * Channel calibration: a minimum load of 500 W per channel is required for this. * Zero load threshold: if the total load drops below 30 VA per channel, the power level is displayed, but no energy is added up and a notification appears in the web interface/app. Switching contactors (important to know) The Shelly Pro 3EM does not have a built-in relay. For contactor control, a 3EM Switch Add-on is available that can be connected to the Pro 3EM. Integration for Smart Building / Industry The Shelly Pro 3EM supports Modbus for voltage, current, power, and energy values, among others. Top Systems product data In the Top Systems range, this product is listed as Shelly Pro 3EM energy meter 120A with article MON000001117 and EAN 3800235268100. Top Systems article: MON000001117 • EAN 3800235268100 “

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