Shelly Split-Core Clamp (50 Amp)

The Shelly Split-Core Clamp (50 Amp) is a compact current-transformer accessory designed to enable accurate current measurement of existing circuits without rewiring. Its split-core design allows it to clamp around a conductor — live or neutral — so you can monitor current flow safely and non-intrusively. The clamp is intended for use with compatible energy-monitoring modules from the same ecosystem to provide real-time data on power consumption.

This accessory is particularly useful in installations where you want to monitor energy usage on specific circuits — for instance lighting, kitchen appliances, HVAC circuits or other heavy loads — without interrupting service. By pairing with a suitable energy-metering module, it becomes a vital part of a smart-home energy-management setup, offering insight into usage patterns, helping to identify inefficient devices, or enabling automation based on consumption thresholds.

Key Features

• 50 Amp Current Monitoring: Measures up to 50 A on single-phase circuits — suitable for most household or small-commercial circuits.
• Split-Core Design for Easy Installation: Opens and clamps around a conductor without disconnecting wires, ideal for retrofits and existing installations.
• Non-intrusive Measurement: Provides contactless current sensing, eliminating the need to cut or rewire circuits.
• Compact Form Factor: Small size allows installation inside consumer units, distribution boards or junction boxes with limited space.
• Compatible with Energy-Monitoring Modules: Designed to interface with compatible modules to deliver real-time current and energy data for consumption tracking and automation.

Technical Specifications

• Maximum measurable current: 50 A (AC)
• Core type: Split-core current transformer
• Conductor aperture: Suitable for standard single-core conductors used in household wiring
• Intended application: Current measurement only (requires compatible energy-monitoring device to process readings)
• Installation: Clamp-style wrap around a single conductor — no need to disconnect or alter existing wiring

Use Cases

• Tracking energy usage of individual circuits – lighting, appliances, kitchen circuits or HVAC systems – to monitor consumption and identify high-usage devices
• Integrating into a smart-home energy-monitoring setup to log consumption for budgeting, efficiency analysis or environmental awareness
• Supporting automation based on current draw — for instance triggering alerts or controlling loads when consumption exceeds predefined thresholds
• Using in renovation or retrofit projects where measuring circuit consumption is needed without rewiring or downtime
• In smaller commercial or workshop environments to monitor power drawn by equipment or production lines for load-management or maintenance scheduling