Shelly 120A

Shelly 120A Current Transformer (CT 120A) is a split-core smart clamp designed to measure high currents up to 120 A when paired with compatible Shelly energy meters, such as the Shelly Pro 3EM.

Features

• Snap-on, screwless split-core design—for quick, tool-free installation
• Rated maximum primary current: 120 A
• Ferite core contained in a white plastic shell
• Ø 15 mm conductor aperture
• Connector: 2-pin MX3.0-2x1Y cable
• Includes high-voltage protection on the secondary winding

Main Applications

• Monitoring current in electrical circuits using Shelly Pro 3EM meters
• Non-intrusive measurement of current (CT clamps do not break the circuit)

Compatibility

• Works with Shelly Pro 3EM energy meter (120A version) via CT inputs
• Not compatible with EM Gen3, EM-50, or other non-Pro models