# Shelly Pro 3EM-3CT63

*Shelly / SPEM-003CEBEU63*

> The Shelly Pro 3EM-3CT63 is a DIN-rail single or three-phase energy meter that comes with a combined three-phase current transformer. The transformer mounts over a circuit breaker and measures up to 63 A. It suits Home Assistant users through an integration (local Wi-Fi control).

- Canonical page: https://smarthomecanon.com/devices/shelly-pro-3em-3ct63
- Last checked: 2026-10-20

## Key facts

| Fact | Value |
| --- | --- |
| Brand | [Shelly](https://smarthomecanon.com/brands/shelly) |
| Category | Energy meter |
| Model numbers | SPEM-003CEBEU63 |
| Status | Current[^1][^2] |
| Generation | Pro[^3] |
| Model code | SPEM-003CEBEU63[^4] |
| Measurement | Single-phase or three-phase, up to 63 A[^4] |
| Current sensing | Combined three-phase current transformer (3CT63)[^4] |
| Relay output | None; contactor control through the Pro 3EM Switch Add-on[^4] |
| Mounting | DIN rail[^4] |
| Radio | Ethernet, Wi-Fi, Bluetooth 4.2[^4] |
| Matter | unknown |
| Local API | HTTP API, MQTT and webhooks[^4][^5] |

## Integration paths

**How the Shelly Pro 3EM-3CT63 connects**

| Path | Requires | Local | Features lost |
| --- | --- | --- | --- |
| [Wi-Fi local](https://smarthomecanon.com/protocols/wifi-local) | withheld | withheld | unknown |
| [Wi-Fi cloud](https://smarthomecanon.com/protocols/wifi-cloud) | Vendor cloud account[^4] | No[^4] | unknown |

**Platform support for the Shelly Pro 3EM-3CT63**

| Path | Platform | Support | Integration |
| --- | --- | --- | --- |
| Wi-Fi local | [Home Assistant](https://smarthomecanon.com/platforms/home-assistant) | withheld | Shelly |
| Wi-Fi local | [Homey](https://smarthomecanon.com/platforms/homey) | withheld | cloud.shelly |

## Related pages

- [Shelly energy meters](https://smarthomecanon.com/lines/shelly-energy-meters) (line)
- [Shelly](https://smarthomecanon.com/brands/shelly) (brand)
- [Wi-Fi with local control](https://smarthomecanon.com/protocols/wifi-local) (protocol)
- [Wi-Fi through a cloud service](https://smarthomecanon.com/protocols/wifi-cloud) (protocol)
- [Home Assistant](https://smarthomecanon.com/platforms/home-assistant) (platform)
- [Homey](https://smarthomecanon.com/platforms/homey) (platform)

## Sources

[^1]: Shelly Pro 3EM 3CT 63 - Shelly Europe shop. https://www.shelly.com/products/shelly-pro-3em-3ct63 (manufacturer, checked 2026-10-13)
[^2]: Shelly Europe shop catalog (Shopify product feed, pages 1-4). https://www.shelly.com/products.json?limit=250&page=1 (manufacturer, checked 2026-10-13)
[^3]: Shelly Pro devices - Shelly Knowledge Base. https://kb.shelly.cloud/knowledge-base/shelly-pro-devices (manufacturer, checked 2026-10-13)
[^4]: Shelly Pro 3EM 3CT63 - Shelly Knowledge Base. https://kb.shelly.cloud/knowledge-base/shelly-pro-3em-3ct63 (manufacturer, checked 2026-10-13)
[^5]: Shelly Technical Documentation. https://shelly-api-docs.shelly.cloud/ (manufacturer, checked 2026-10-13)