Wireless AC Current Meter – Single & Three-Phase Monitoring (20A to 500A)

The ALTA® Wireless AC Current Meter enables accurate, real-time monitoring of alternating current (AC RMS) in single-phase and three-phase systems. Using clip-on current transformers (CTs), this sensor non-invasively tracks energy usage without the need to disconnect wiring—ideal for industrial, commercial, and facility management applications.

Available in three CT sizes to suit a variety of loads:

• 0–20 Amp

• 0–150 Amp

• 0–500 Amp

This wireless current meter captures Minimum, Maximum, and Average Amp-RMS readings, along with accumulated Amp-hours, giving you valuable insight into load behavior, energy consumption, and operational health. Calibrated models offer ±1% accuracy, making them suitable for compliance and high-precision environments.

⚠️ Note: Requires a compatible Monnit gateway and may require software. Visit our Gateway & Software page or explore bundled kits for complete solutions.

Key Features:

• Real-time monitoring of AC RMS current

• Supports single-phase and three-phase systems

• Transformer sizes: 20A, 150A, 500A (clip-on)

• Measures Min, Max, and Avg current + Amp-hour accumulation

• Resolution: 0.1 – 0.3 Amp-RMS

• Accuracy: ±2% (uncalibrated), ±1% (calibrated)

• Configurable thresholds for condition-based alerts

• Wireless data transmission with long-range capability

Common Applications:

• Industrial energy usage tracking

• Load monitoring for HVAC, motors, and pumps

• Power diagnostics and submetering

• Predictive maintenance in factories and plants

• Utility and facility-wide current monitoring