Data from Amazon and official Shelly site.
2026 verdict
For most buyers in 2026, Shelly Pro EM-50 is the safer pick over Shelly Pro 3EM 3CT63 because of price, rating, and relay output. It separates itself most clearly on price, rating, and relay output, while still looking better on its broader overall balance. Shelly Pro 3EM 3CT63 is the better fit only for buyers who prioritize warranty and metering above everything else here. For most setups, Shelly Pro EM-50 is the smarter buy.
| Feature | Shelly Pro 3EM 3CT63 | Shelly Pro EM-50 | Winner |
|---|---|---|---|
| Price | $150.99 | $119.99 | Shelly Pro EM-50 |
| Rating | 4.4 | 4.6 | Shelly Pro EM-50 |
| Warranty | 5 years | 3 years | Shelly Pro 3EM 3CT63 |
| Metering | Three-Phase Support, Solar Net Metering, Power Factor Readings | Solar Net Metering, Power Factor Readings | Shelly Pro 3EM 3CT63 |
| Relay Output | NO | YES | Shelly Pro EM-50 |
| Breaker Panel Install | YES | YES | Tie |
| Smart Meter Port | NO | NO | Tie |
| Connectivity | 2.4 GHz WiFi, Ethernet, Bluetooth, Other | 2.4 GHz WiFi, Ethernet, Bluetooth, Other | Tie |
| Integrations | Google Home, Alexa, Home Assistant | Google Home, Alexa, Home Assistant | Tie |
| Data & Monitoring | Energy Cost Tracking, Time-of-Use Rates, Data Export, Usage Alerts | Energy Cost Tracking, Time-of-Use Rates, Data Export, Usage Alerts | Tie |
| Local Control | Local API, MQTT, Local Web Interface | Local API, MQTT, Local Web Interface | Tie |
| Load Management | YES | YES | Tie |
$150.99
- + Warranty: 5 years
- + Metering: Three-Phase Support, Solar Net Metering, Power Factor Readings
- - Price: $150.99 vs $119.99
- - Rating: 4.4 vs 4.6
Winner
$119.99
- + Price: $119.99
- + Rating: 4.6
- + Relay Output: YES
- - Warranty: 3 years vs 5 years
- - Metering: Solar Net Metering, Power Factor Readings vs Three-Phase Support, Solar Net Metering, Power Factor Readings
Frequently Asked Questions
Which is better overall: Shelly Pro 3EM 3CT63 or Shelly Pro EM-50?
Shelly Pro EM-50 has the stronger overall profile in this comparison, especially for price, rating, and relay output.
What is the biggest difference between Shelly Pro 3EM 3CT63 and Shelly Pro EM-50?
Price is one of the clearest differences: Shelly Pro 3EM 3CT63 lists $150.99, while Shelly Pro EM-50 lists $119.99.
Which one looks better on price?
Shelly Pro 3EM 3CT63 is listed at $150.99, while Shelly Pro EM-50 is listed at $119.99. Shelly Pro EM-50 (better spec).
Who should buy Shelly Pro 3EM 3CT63?
Choose Shelly Pro 3EM 3CT63 if your priority is warranty and metering and that matters more than price.
Who should buy Shelly Pro EM-50?
Choose Shelly Pro EM-50 if your priority is price and rating and that matters more than warranty.
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