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

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

The Shelly Pro 3EM-120A is a DIN-rail mountable three-phase (or single-phase) smart energy meter that ships with three 120A split-core current transformers for non-invasive monitoring of an entire distribution board. It measures accumulated energy plus instantaneous voltage, current, active and apparent power per phase in real time, supporting 4-quadrant measurement for imported and exported energy (e.g. solar). It connects via Wi-Fi, Bluetooth and LAN and supports Modbus TCP for integration into industrial or home energy-management systems.

### Specifications

**SKU**

SHELLY PRO 3EM-120A

**Brand**

Shelly

**Category**

Smart Home

**Key Specs**

3-phase (or 1-phase) energy meter, DIN-rail mounted; Ships with 3x 120A split-core current transformers; Measurement accuracy: 1%, Accuracy class B (active energy, IEC 62053-21); Connectivity: Wi-Fi, Bluetooth, LAN; Data logging: at least 45 days at 1-minute resolution (local); Protocols: Modbus TCP, MQTT, WebSocket (in/out), UDP, mTLS; 4-quadrant measurement (import/export)

## Details

- **Price:** 4109.0 ZAR
- **Vendor:** Shelly
- **Type:** Smart Home
- **Tags:** Nology, Shelly, Smart Home

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 4109.00 ZAR | In stock |

## Images

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

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> Source: [Guards On Duty Shop & Security Guards ](https://guardsondutyshop.co.za/products/shelly-shelly-pro-3em-120a)
> Updated: 2026-07-07