Shelly 50A Current Clamp is a dedicated current transformer accessory for Shelly energy monitoring devices. It allows accurate, non-invasive measurement of AC current up to 50A, enabling precise tracking of energy consumption on monitored circuits.

Key Features

• Up to 50A current range – designed to measure AC loads up to 50 amps on a single monitored conductor.
• High accuracy – monitoring accuracy within approximately 1%, suitable for detailed energy analysis and optimisation.
• Compatible with Shelly meters – works with Shelly energy monitoring devices (such as the Shelly Pro EM series) as the sensing element for one measurement channel.
• Non-invasive measurement – clamp-on design allows installation around a live conductor without needing to disconnect wiring.
• Supports up to two circuits (with device) – when paired with a dual-channel Shelly meter, enables monitoring of two separate circuits using two clamps.

Application & Use

• Single-channel support – each 50A clamp provides measurement for one channel; two clamps are used for two-channel devices.
• Typical loads: ideal for monitoring circuits such as immersion heaters, EV chargers, heat pumps, or whole-house feeds up to 50A.
• Easy retrofit – can be added to existing installations with suitable Shelly meters for upgraded monitoring without major rewiring.

Installation Notes

• Install around a single live conductor only; do not clamp around cables containing both live and neutral as this will cancel the measured current.
• Ensure the clamp is fully closed and securely latched to maintain accuracy and safety.
• All work on electrical panels must be carried out by a competent person with power safely isolated where required.