# Shelly Pro 3EM-400A DIN-Rail Mountable Single Or Three-Phase Energy Meter With 3-Phase Current Transformers

## Shelly Pro 3EM-400A DIN-Rail Mountable Single Or Three-Phase Energy Meter With 3-Phase Current Transformers

The Shelly Pro 3EM-400A is the higher-current variant of Shelly's DIN-rail three-phase energy meter, shipping with three 400A split-core current transformers for monitoring larger incoming supplies such as commercial boards or main distribution feeds. Like the 120A model it reports per-phase voltage, current, active and apparent power plus accumulated energy in real time, with support for 4-quadrant (import/export) measurement for solar or battery installations. It connects over Wi-Fi, Bluetooth and LAN and supports Modbus TCP, MQTT and webhooks.

### Specifications

**SKU**

SHELLY PRO 3EM-400A

**Brand**

Shelly

**Category**

Smart Home

**Key Specs**

3-phase (or 1-phase) energy meter, DIN-rail mounted; Ships with 3x 400A split-core current transformers; Voltage measurement: 100-260V RMS per phase; Current measurement: 0-400A RMS per phase and neutral; Power supply: 110-240V AC, 50/60Hz; Power consumption: <3W; Accuracy class B, 1% (IEC 62053-21); Data logging: at least 45 days at 1-minute resolution; Dimensions: 94x19x69mm; Weight: 62g; Operating temp: -20°C to 40°C

## Details

- **Price:** 7539.0 ZAR
- **Vendor:** Shelly
- **Type:** Smart Home
- **Tags:** Nology, Shelly, Smart Home

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 7539.00 ZAR | In stock |

## Images

- Shelly Pro 3EM-400A DIN-Rail Mountable Single Or Three-Phase Energy Meter With 3-Phase Current Transformers

---

> Source: [Guards On Duty Shop & Security Guards ](https://guardsondutyshop.co.za/products/shelly-shelly-pro-3em-400a)
> Updated: 2026-07-07