Shelly Split-Core Clamp (120 Amp)

The Shelly Split-Core Clamp (120 Amp) represents a sophisticated current monitoring solution designed specifically for integration with the Shelly Pro 3EM energy meter. This split-core current transformer enables non-invasive installation without requiring disconnection of existing electrical circuits, making it ideal for both retrofit applications and new installations where accurate energy monitoring is essential.

Engineered with user convenience and safety as primary considerations, the clamp features a snap-on, screwless mounting system that simplifies installation while maintaining secure positioning on conductors. The robust construction incorporates high-quality materials and comprehensive protection features, ensuring reliable performance in diverse electrical environments. Its compact dimensions allow for installation in confined spaces commonly found within electrical distribution boards and enclosures.

Technical Specifications

• Part Number: SHELLY-120A-CLAMP
• Rated Maximum Primary Current: 120 A
• Primary/Secondary Current Ratio: 3000:1
• Conductor Aperture: Ø15 mm / Ø0.6 in
• Physical Dimensions (HxWxD): 45x40x36 ±0.5 mm
• Weight: 75 ±1 g (with cable)
• Core Material: Ferrite
• Shell Material: Plastic
• Colour: White
• Electrical Strength: 3000 V AC, 60 seconds
• Ambient Temperature Range: -10 °C to 50 °C
• Humidity Range: 0% to 80% RH
• Maximum Altitude: 2000 m

Key Features

• Tool-Free Installation: The innovative snap-on design eliminates the need for tools during mounting, significantly reducing installation time and complexity.
• Secondary Winding Protection: Comprehensive high voltage protection safeguards the secondary winding, enhancing operational safety and device longevity.
• Standardised Connector: Features a 2-pin MX3.0-2x1Y connector specifically designed for seamless integration with the Shelly Pro 3EM energy meter.
• Secure Mounting System: Includes provisions for cable ties on both sides to ensure stable positioning and prevent accidental dislodgement during operation.
• Non-Invasive Measurement: Split-core construction allows for installation without interrupting power supply to monitored circuits.

Use Cases

This current transformer is primarily utilised for accurate energy consumption monitoring in commercial and industrial applications where precise measurement of electrical parameters is required. It serves as an essential component in energy management systems, enabling detailed analysis of power usage patterns across multiple circuits. The device is particularly valuable for load profiling, demand monitoring, and identifying opportunities for energy efficiency improvements in facilities with significant electrical consumption.