Shelly Pro EM-50
VAT included · price in ZAR
Shelly appRuns in the free Shelly Smart Control app. It does not appear in the SmartKwam app.
This device is wired into your mains or DB board and must be fitted by a registered electrician.
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Two circuits measured, right on the DIN rail.
What it does
Shelly Pro EM-50 clips onto the DIN rail in your DB board and measures two circuits on a single-phase supply through split-core clamps. Two 50 A clamps come in the box. It reads in both directions, which makes it well suited to tracking grid import alongside solar or inverter production.
It connects over Wi-Fi or a wired Ethernet cable, keeps at least 60 days of one-minute data on board, and reports active and apparent power, energy and power factor to the Shelly Smart Control app. A real-time clock keeps timestamps correct if the internet drops, and you can export the history as CSV or JSON for your own records.
A galvanically isolated relay rated 2 A at 240 V can drive a contactor, so your electrician can set it up to shed a geyser or pool pump when demand rises. The relay only signals the contactor, which your electrician sizes for the load it switches. A short press of the button on the front also toggles it by hand.
What you need
Needs DIN rail space and a live and neutral supply in the DB board. Both 50 A clamps are included.
Install
This device is wired into your mains or DB board and must be fitted by a registered electrician.
Mounted on the DIN rail in the DB board, with the clamps clipped around the conductors being measured. A registered electrician must fit it. Shelly's official guide, linked on this page, shows the wiring.
Features
- Two-channel single-phase energy meter for DIN rail mounting.
- Two 50 A current transformer clamps included.
- Bidirectional, four-quadrant measurement for solar and inverter setups.
- Isolated relay output, 2 A at 240 V AC, for contactor control.
- Wi-Fi, Ethernet (RJ45) and Bluetooth.
- Stores at least 60 days of one-minute data on the device.
- Scripting, webhooks, MQTT, HTTP and WebSocket for integrations.
Specs
- Size
- 19 × 94 × 69 mm (W × H × D)
- Weight
- 63 g
- Mounting
- DIN rail
- Model
- SPEM-002CEBEU50
- Power supply
- 100 to 260 V AC, 50/60 Hz
- Own consumption
- Under 3 W
- Current range
- 0 to 50 A per channel, via clamp
- Current accuracy
- ±1% (5 to 50 A), ±2% (0 to 5 A)
- Active energy accuracy
- Class B
- Relay output
- 2 A at 240 V AC, isolated dry contact
- Connectivity
- Wi-Fi 802.11 b/g/n, Ethernet RJ45, Bluetooth 4.2
- Operating temperature
- -20 to 40 °C
- Mounting
- DIN rail
In the box
- 1 × Shelly Pro EM-50
- 2 × Shelly 50 A current transformer clamp
Warranty
5-year manufacturer warranty.
Wiring guide and downloads
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R 2,289.00