The Victron AC Current Sensor is a single-phase current monitoring accessory for use with Victron GX devices. It measures AC current up to 40A and feeds live data into the GX system, giving accurate consumption or generation readings without needing a dedicated energy meter.

Key features

• Maximum current, 40A, single phase
• Compatibility, Victron GX devices including Cerbo GX and Color Control GX
• Sensor type, clamp-style, fits around a single conductor without breaking the circuit
• Connection, plugs directly into the GX device AC sensor input
• Weight, 83g

How it works

The sensor uses a current transformer clamp. It fits around a single live conductor and outputs a signal proportional to the current flowing through it. The GX device reads this signal and shows real-time wattage and energy data locally and in the VRM portal. No additional shunt or meter is needed for basic current monitoring.

It is a factory-terminated unit with a fixed cable and connector, designed to plug directly into compatible Victron GX hardware. Check your GX device documentation to confirm an AC sensor input is free before ordering multiple units.

Applications

• Monitoring AC load consumption on a single-phase circuit within a Victron system
• Measuring generator output current feeding a Victron inverter/charger
• Tracking grid import or export on a sub-circuit not covered by the main energy meter
• Off-grid and hybrid solar installations needing circuit-level current data
• Light commercial installations with a monitored load circuit up to 40A

Installation notes

The sensor clamps around a single conductor only. Do not clamp around a twin-and-earth or multicore cable, as this gives an incorrect or zero reading. Installation should be carried out by a qualified electrician, complying with UK wiring regulations and any applicable G98 or G99 requirements. Confirm GX device firmware is up to date for full compatibility.

What's in the box

• 1x Victron AC Current Sensor, single phase, 40A maximum