Shelly 50A Current Transformer for Pro EM-50 & EM Gen3 Energy Meters
The Shelly 50A Current Transformer is a precision split-core clamp designed for contactless energy monitoring with Shelly Pro EM-50 and Shelly EM Gen3 energy meters. With 1% accuracy and a 50A rated current capacity, this CT clamp enables you to track individual circuits, appliances, or solar generation sources without additional wiring. Perfect for smart home automation, energy audits, and building management systems across Australia.
Key Features
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High Accuracy: 1% measurement precision for reliable energy data
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Split-Core Design: Easy installation around existing cables without disconnection
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Direct Connector: Pre-wired with 60cm cable and connector for plug-and-play setup
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Wide Compatibility: Works with Shelly Pro EM, Pro 3EM (120A), EM Gen3, and EM Gen4 devices
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Compact Size: 23.5mm × 41.5mm × 26mm fits in tight distribution boards
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Professional Grade: Ferrite core construction with 3000VAC electrical strength
Perfect for Energy Monitoring
Whether you're monitoring solar panel output, tracking energy usage in specific rooms, or managing commercial electrical systems, the Shelly 50A CT provides accurate real-time data. The 11mm internal diameter accommodates most standard residential and light commercial cables. The split-core design means installation takes seconds - simply clamp it around the live wire and connect to your Shelly energy meter.
Smart Home Integration
When paired with Shelly EM Gen3 or Pro EM-50 energy meters, this current transformer unlocks powerful automation capabilities. Monitor consumption in real-time via the Shelly Smart Control app, integrate with Home Assistant, Google Home, or Alexa, and set up smart schedules based on energy usage patterns. Support for MQTT, WebSocket, and HTTP protocols ensures compatibility with virtually any smart home platform.
Technical Advantages
The transformer delivers a 16.67mA secondary current that's accurately proportional to the primary circuit load, with minimal impact on the monitored circuit. The ferrite core ensures stable performance across varying loads, with saturation current rated at ≥85A for brief overload protection. The 60cm cable length provides flexibility for mounting in distribution boards while maintaining signal integrity.
What's in the Box
- 1 × Shelly 50A Current Transformer with connector
- User manual
Full Specifications
| Rated Primary Current |
50A |
| Rated Secondary Current |
16.67mA |
| Saturation Current |
≥85A |
| Accuracy Class |
1% |
| Core Type |
Ferrite core |
| Electrical Strength |
3000VAC 1mA 60s |
| Internal Diameter |
11mm |
| Load Resistance |
20Ω |
| Cable Length |
60cm |
| Dimensions (W × H × D) |
23.5mm × 41.5mm × 26mm |
| Weight |
Approximately 220g |
| Compatibility |
Shelly Pro EM, Pro 3EM (120A), EM Gen3, EM Gen4 |
| Warranty |
3 years (Gen3 devices) |
Specifications are sourced from the manufacturer product page and may be updated.