SMA SI4548-US-10 Sunny Island Off-grid Inverter/Charger
SMA SI4548-US-10 Sunny Island Off-grid Inverter/Charger

SMA SI4548-US-10 Sunny Island Off-grid Inverter/Charger
SMA SI4548-US-10 Sunny Island Off-grid Inverter/Charger
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We offer multiple secure payment options for your convenience

SMA SI4548-US-10 Sunny Island Off-Grid Inverter/Charger
The SMA SI4548-US-10 Sunny Island Inverter/Charger is a cornerstone of off-grid solar power systems, offering exceptional efficiency and intelligent battery management for robust off-grid energy independence.
- Maximum efficiency of 96% and CEC efficiency of 94.5% for peak energy conversion.
- Intelligent battery management system extends the life and performance of battery storage.
- Easy commissioning via the “Quick Configuration Guide” streamlines setup.
- OptiCool™ active temperature management system ensures durability and consistent performance.
- Flexible design supports systems from 4.5 to 100 kW, suitable for a range of applications.
Technology and Overview
With a focus on efficiency and reliability, this inverter employs state-of-the-art technology for off-grid and on-grid situations, including a sophisticated battery management system and innovative cooling for enhanced longevity.
Installation and Compatibility Overview
The SMA SI4548-US-10 offers a user-friendly installation process, supporting various battery types and scalable for different system sizes, delivering a versatile solution for off-grid power needs.
Benefits and Applications Overview
Optimized for cost-saving and environmental impact, the Sunny Island Inverter/Charger is ideal for rural electrification, remote homes, and backup power, promoting sustainable and reliable energy access.
Specifications
Specification | Value |
Model No. | SI4548-US-10 |
Rated grid voltage / AC voltage range | 120 V/105 V – 132 V |
Rated frequency / frequency range (adjustable) | 60 Hz/55 Hz ... 65 Hz |
AC power (at 25 °C / at 40 °C) for 3 hours | 5000 W/4000 W |
Rated power (@ Unom, fnom / 25 °C / @ cos ? = 1) | 4500 W |
AC power at 25 °C for 30 min / 1 min / 3 s | 5300 W / 8400 W / 11000 W |
Rated current / max. output current (peak) | 37.5 A/180 A for approx. 60 ms |
Total harmonic factor output voltage / power factor with rated power | 3 % / -1 … +1 |
Rated input voltage / AC input voltage range | 120 V/80 V – 150 V |
Rated input frequency / allowable input frequency range | 60 Hz/54 Hz ... 66 Hz |
Max. AC input current / adjustable | 56 A/0 A … 56 A |
Max. AC input power | 6.7 kW |
Rated input voltage / DC voltage range | 48 V/41 V – 63 V |
Max. battery charging current / DC rated charging current | 100 A / 85 A |
Battery type / battery capacity range | Lead, NiCd/100 Ah … 10000 Ah |
Charge control | IUoU charge procedure with automatic full charge and equalization charge |
Max. efficiency / CEC efficiency | 96 % / 94.5 % |
Self-consumption without load / standby | 25 W/4 W |
DC reverse polarity protection / DC fuse | Standard feature |
AC short-circuit / AC overload | Standard feature |
Overtemperature / battery deep discharge | Standard feature |
Dimensions (W / H / D) | 467 / 612 / 235 mm (18.4 / 24.1 / 9.3 inch) |
Weight | 63 kg / 139 lb |
Operating temperature range | -25 °C … +60 °C / -13 °F … +122 °F |
Operation and display / multi-function relay | Internal / 2 |
Degree of protection (according to IEC 60529) | indoors (NEMA 1) |
Three-phase systems / parallel connection | Standard feature |
Integrated bypass / multicluster operation | Not Available / Standard feature |
State of charge calculation / full charge / equalization charge | Standard feature |
Integrated soft start / generator support | Standard feature |
Battery temperature sensor / data cable | Standard feature |
Warranty | 5 years |
Battery cable / battery fuse | Optional |
Interface (RS 485 / Multicluster PB) | Optional |
Extended generator start “GenMan” | Optional |
Load-shedding protection / battery current measurement | Optional |