SMA EMETER-US-50 Energy Meter
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Estimated Delivery:Dec 09 - Dec 13
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Free Shipping & Returns: On all orders over $75
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.
Key Benefits
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Precision Energy Monitoring: Tracks grid import and export with ±1% accuracy at 200 ms interval
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Easy Installation: Pre-terminated wiring, two split-core CTs, and UL‑2808 approval for in-panel installation
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Smart Connectivity: Supports Ethernet (SMA Speedwire) and RS-485 (Modbus RTU) protocols for inverter or network integration
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Zero Export & Power Limiting: Enables dynamic control of grid feed-in to comply with local utility limits
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Compact & Reliable: Only ~0.2 lb, indoor-rated (NEMA 1), low power draw (<2 W), and suitable for split-phase or three-phase systems
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Trusted SMA Build: Covered by a 2-year warranty and certified to UL, FCC, CSA, and ICES standards
Technical Specifications
| Specification | Details |
|---|---|
| Voltage Range | 120/240 V or 120/208 V split-phase or 240 V delta |
| Frequency | 50/60 Hz ±5% |
| Communication | Ethernet (10/100 Mbit/s, #24AWG), RS‑485 Modbus RTU |
| Data Protocols | SMA Speedwire, Modbus RTU |
| Accuracy / Sampling | ±1% accuracy, 200 ms recording interval |
| Current Transformers (CTs) | 2 clamp-on CTs, rated 200 A nominal / 300 A max, CAT IV |
| Mounting | Indoors; inside load centers or panelboards |
| LED Status Display | 3 LEDs for operational indication |
| Operating Temp Range | –25 °C to +55 °C (–13 °F to +131 °F) |
| Storage Temp Range | –25 °C to +70 °C (–13 °F to +158 °F) |
| Relative Humidity | Up to 75%; max 90% for 30 days |
| Altitude Rating | Up to 2000 m (6562 ft) |
| Dimensions (L×W×H) | ~3.46 × 1.38 × 2.56 in (88 × 35 × 65 mm) |
| Weight | ~0.2 lb (90 g) |
| Maximum Power Consumption | ≤ 2 W |
| Certifications | UL‑2808, CSA C22.2 No. 61010‑1/2‑030, FCC 15B, ICES‑003, TSCA |
| Warranty | 2-year limited factory warranty |
Why Choose SMA EMETER-US-50?
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Ideal for homeowners implementing solar self-consumption and energy optimization
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Enables zero-export functionality and compliance with utility regulations
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Intuitive setup through SMA 360° Installer App and homeowner monitoring via SMA Energy App or Sunny Portal
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Compact DIN-rail mounting with in-panel placement ensures clean, professional installations
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Built with industry-grade components, supporting up to 200 A current measuring and featuring multiple safety certifications
Document: Specification Sheet
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We want you to be 100% satisfied with your purchase. Items can be returned or exchanged within 30 days of delivery.
