SMA EMETER-US-50 Energy Meter

The SMA EMETER‑US‑50 is a compact, high-precision energy meter designed for U.S. residential and light commercial solar systems. Purpose-built for compatibility with Sunny Boy Smart Energy inverters, it measures bi-directional energy flow—tracking both consumption and export—allowing homeowners and installers to optimize self-consumption, implement export limiting, and monitor system performance in real time via SMA portals and apps. 

Comprehensive Overview of the SMA EMETER-US-50

• Precision Energy Monitoring: Tracks grid import and export with ±1% accuracy at 200 ms interval 

• Easy Installation: Pre-terminated wiring, two split-core CTs, and UL‑2808 approval for in-panel installation 

• Smart Connectivity: Supports Ethernet (SMA Speedwire) and RS-485 (Modbus RTU) protocols for inverter or network integration 

• Zero Export & Power Limiting: Enables dynamic control of grid feed-in to comply with local utility limits 

• Compact & Reliable: Only ~0.2 lb, indoor-rated (NEMA 1), low power draw (<2 W), and suitable for split-phase or three-phase systems 

• Trusted SMA Build: Covered by a 2-year warranty and certified to UL, FCC, CSA, and ICES standards 

Technical Specifications

Why Choose SMA EMETER-US-50?

• Ideal for homeowners implementing solar self-consumption and energy optimization

• Enables zero-export functionality and compliance with utility regulations

• Intuitive setup through SMA 360° Installer App and homeowner monitoring via SMA Energy App or Sunny Portal 

• Compact DIN-rail mounting with in-panel placement ensures clean, professional installations

• Built with industry-grade components, supporting up to 200 A current measuring and featuring multiple safety certifications

Document: Specification Sheet

Key Features and Benefits of the SMA EMETER-US-50

The SMA EMETER-US-50 is designed to deliver precise and reliable energy measurement for residential and commercial applications. This energy meter offers easy integration with existing systems, ensuring seamless data collection and management. It supports a wide range of voltages and currents, making it versatile for various energy monitoring needs. Users benefit from real-time data, enabling better energy usage optimization and cost savings. The device’s compact size and robust construction guarantee durability, making it a dependable choice for long-term energy monitoring.

Installation and Compatibility

The SMA EMETER-US-50 is engineered for straightforward installation, requiring minimal setup time for professional electricians and technicians. Its compatibility with popular communication protocols allows effortless connection to monitoring platforms and smart home systems. The meter supports both single-phase and three-phase systems, making it adaptable across diverse electrical infrastructures. Additionally, its user-friendly interface simplifies configuration and maintenance, minimizing operational downtime and enhancing overall system efficiency.

Performance and Accuracy

Accuracy is a core strength of the SMA EMETER-US-50, ensuring precise tracking of energy consumption and generation. The meter complies with international standards for metering accuracy, which guarantees dependable performance in various environments. Its advanced sensing technology offers consistent readings even under fluctuating load conditions. This accuracy helps users monitor energy consumption more effectively, identify inefficiencies, and implement targeted energy-saving strategies, ultimately improving energy management and reducing utility costs.