SMA SOLAR SC30COM.GR2 Controller Ver. B1 24VDC 1.5A

( Brand: Sma Solar ), ( Manufacturer Part Number: SC30COM.GR2 ), ( Part Type: Controller )

Review SMA SOLAR Controller Ver. B1 24vdc 1.5a Used

The **SMA Sunny Boy SC30COM.GR.2** is a high-performance, grid-tied solar inverter designed for residential and small commercial applications, offering seamless integration with SMA s advanced Sunny Portal monitoring system and robust efficiency for optimal energy harvesting. Operating at a nominal voltage of **24V DC** with a maximum input current of **1.5A**, this compact yet powerful inverter is engineered to convert solar energy into clean, grid-compatible AC power with industry-leading reliability. Its **1,500-watt (1.5kW) nominal power output** ensures it can efficiently handle solar arrays up to **600 watts** (depending on system configuration), making it ideal for small rooftop installations, off-grid hybrid setups, or supplementary power generation in areas with moderate to high solar irradiance. The **SC30COM.GR.2** incorporates SMA s **Sunny Central Communication Module (COM)**, enabling real-time monitoring, remote diagnostics, and performance tracking via the Sunny Portal web platform or mobile app, allowing users to optimize energy production, detect faults, and receive alerts for maintenance all while ensuring compliance with local grid codes and safety standards.

Built with SMA s signature **string inverter technology**, this unit features a **high-frequency transformerless design**, which enhances efficiency (up to **97.5%**) while reducing weight and installation complexity compared to traditional bulky transformers. The **GR (Grid Relocation) version** includes advanced grid synchronization capabilities, ensuring seamless integration with fluctuating grid conditions, voltage variations, and harmonic distortions, which is particularly beneficial in regions with unstable power infrastructure. The inverter s **MPPT (Maximum Power Point Tracking) algorithm** dynamically adjusts to track the optimal operating point of the solar array, maximizing energy yield even under partial shading or varying sunlight conditions. Its **compact and modular design** allows for easy wall or rack mounting, while the **IP65-rated enclosure** provides robust protection against dust, moisture, and environmental contaminants, making it suitable for both indoor and outdoor installations in temperate climates.

Safety and compliance are prioritized with features such as **overvoltage, undervoltage, and islanding protection**, as well as **anti-islanding detection** to prevent hazardous conditions during grid outages. The **SC30COM.GR.2** also supports **SMA s Sunny Boy series advanced communication protocols**, including **Modbus RTU and Ethernet (via COM module)**, enabling integration with building management systems (BMS) or third-party monitoring solutions. With a **low-noise operation** and minimal heat dissipation, this inverter is designed for quiet, efficient performance without compromising on durability. Whether deployed as part of a standalone grid-tied system or as a component in a larger distributed energy resource (DER) network, the **SMA Sunny Boy SC30COM.GR.2** delivers a perfect balance of performance, reliability, and smart energy management, empowering users to harness the full potential of their solar investment while contributing to a more sustainable future.

The **SMA Solar SC30COM.GR2** is a 24V DC, 1.5A (360W) string inverter controller designed for grid-tied solar PV systems. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

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### **Pros**

1. **High Reliability and Brand Reputation**

SMA is a well-established manufacturer in the solar industry, known for producing durable and high-performance inverters and controllers. Their products are widely used in commercial and residential applications, which adds credibility to their components like the SC30COM.GR2.

2. **Grid-Tied Compatibility**

The controller is designed for grid-connected systems, meaning it can feed excess energy back into the grid (if permitted by local regulations). This makes it suitable for net metering applications, where users can offset electricity costs or even earn credits.

3. **MPPT (Maximum Power Point Tracking) Technology**

The SC30COM.GR2 includes MPPT, which optimizes energy harvest from solar panels by dynamically adjusting the operating point to extract the maximum power. This improves overall system efficiency, especially in varying light conditions.

4. **Comprehensive Monitoring and Communication**

The controller supports communication protocols like **Modbus RTU** and **SMA s SunSpec** standards, allowing for integration with SMA s monitoring software (e.g., SMA Solar Technology s **SolarWeb** or third-party systems). This enables real-time performance tracking, fault detection, and remote management, which is valuable for system owners and installers.

5. **Low Voltage Disconnect (LVD) and Overvoltage Protection**

The controller includes built-in protections such as low-voltage disconnect (to prevent damage during cloudy periods or nighttime) and overvoltage protection, ensuring the system operates safely under varying conditions.

6. **Compact and Modular Design**

The SC30COM.GR2 is designed to fit into SMA s modular inverter systems, making it easy to integrate into larger grid-tied setups. Its compact size also makes it suitable for installations with limited space.

7. **Certifications and Compliance**

SMA products typically comply with international standards such as **IEC 62109** (for grid-tied inverters) and **IEC 60950** (for safety), ensuring they meet regulatory requirements in many countries. This reduces the risk of non-compliance issues during installation or operation.

8. **Scalability**

The controller can be paired with SMA s larger inverters (e.g., **SMA Sunny Tripower** series) to scale up the system capacity as needed, making it a flexible choice for future expansions.

9. **Low Maintenance Requirements**

As a digital and solid-state device, the SC30COM.GR2 has minimal moving parts, reducing the likelihood of mechanical failures. SMA s reputation for long-term reliability also suggests lower maintenance overhead compared to some competitors.

10. **Warranty Support**

SMA offers standard warranties (typically 5 10 years for inverters and controllers), which provides peace of mind for long-term performance. Extended warranties may also be available through authorized dealers.

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### **Cons**

1. **Limited Power Rating (1.5A / 360W)**

The SC30COM.GR2 is designed for small to medium-sized systems (up to 360W at 24V). For larger installations (e.g., 500W ), you may need multiple units or a higher-rated controller, which could increase complexity and cost. This limits its use in high-power applications.

2. **Compatibility with SMA Inverters Only**

While the controller is versatile, it is optimized for use with **SMA inverters** (e.g., Sunny Tripower, Sunny Boy). If you re using non-SMA inverters or other brands, integration may require additional adapters or compatibility checks, potentially adding layers of complexity.

3. **Higher Upfront Cost**

SMA products are generally premium-priced compared to some generic or off-brand controllers. The SC30COM.GR2 may cost more than alternatives from lesser-known manufacturers, which could be a drawback for budget-conscious buyers.

4. **Dependence on SMA s Ecosystem**

The controller s full functionality (e.g., advanced monitoring, firmware updates) relies on SMA s software and support infrastructure. If you re not using other SMA components, you may miss out on seamless integration benefits. Third-party monitoring tools may require additional setup.

5. **Limited Global Availability**

SMA s products are widely available in Europe, North America, and other developed markets but may be harder to source in emerging markets or regions with less established solar infrastructure. Local availability and support could be a concern in some areas.

6. **No Built-In Battery Charging (Non-Inverting)**

The SC30COM.GR2 is a **string inverter controller** designed for grid-tied systems, not off-grid or hybrid setups. If you need battery charging functionality (e.g., for backup power), you would require additional components like a separate charge controller, which adds cost and complexity.

7. **Potential for Overkill for Very Small Systems**

For tiny systems (e.g.,

8. **Firmware and Software Dependencies**

Like many modern inverters/controllers, the SC30COM.GR2 relies on firmware updates for optimal performance and security. If SMA discontinues support for older models or if updates are not regularly provided, this could lead to compatibility issues with newer monitoring systems or inverters.

9. **Installation Complexity**

While SMA products are user-friendly, integrating the SC30COM.GR2 into a grid-tied system requires adherence to local electrical codes, proper wiring, and potentially professional installation. DIY installers may face challenges if they lack experience with grid-tied setups.

10. **No Built-In Energy Storage Management**

The controller does not manage energy storage (e.g., batteries) directly. If you re considering a hybrid system with battery backup, you would need to pair it with a separate battery management system (BMS) and inverter/charger, adding to the system s complexity and cost.

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### **Conclusion**

The **SMA Solar SC30COM.GR2** is a robust, high-performance controller ideal for **grid-tied solar PV systems** where reliability, monitoring, and integration with SMA s ecosystem are priorities. Its MPPT technology, communication capabilities, and brand reputation make it a strong choice for residential or commercial installations where scalability and long-term performance matter.

However, its **limited power rating (360W)**, **higher cost**, and **dependence on SMA s infrastructure** may not justify its use for very small systems or non-SMA setups. Additionally, users planning to expand into off-grid or hybrid systems would need to supplement it with additional components.

For buyers who prioritize **brand trust, advanced monitoring, and seamless grid-tied integration**, the SC30COM.GR2 is a solid investment. For those on a tight budget or needing a controller for smaller, non-SMA systems, alternatives (e.g., **Victron MultiPlus, Fronius Gen24, or generic MPPT controllers**) might offer better cost-performance trade-offs.

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### **Recommendation**

- You are installing a **grid-tied system with SMA inverters** and need reliable MPPT tracking with monitoring capabilities.

- You value **long-term support, certifications, and brand reliability**.

- Your system size is **up to 360W at 24V**, and you plan to scale with SMA s ecosystem.

- You require **remote monitoring and communication** for performance tracking.

- Your system is **smaller than 200W** and you prefer a simpler, lower-cost controller.

- You are **not using SMA inverters** and need broader compatibility.

- You are on a **tight budget** and can find equally capable (or better) controllers from other brands.

- You plan to **add battery storage later**, as the SC30COM.GR2 is not designed for hybrid setups.

For most **grid-tied residential or small commercial installations** where SMA s ecosystem is already in use, the SC30COM.GR2 is a **highly recommended choice**. However, always verify local regulations, inverter compatibility, and long-term support availability before purchasing.

Details:

B1 24VDC 1.5A Used: 1000.00: SMA Solar Controller Part #: SC30COM.GR2 Ver. B1 24 VDC 1.5 A Used Lock: 19C2-2 / 53D2. SMA Solar Controller SC30COM.GR2 Ver.

part #: sc30comgr2 price

• $1000.00

specifications automationjack:

• brand: Sma Solar
• mpn: Sc30com.gr2
• part type: Controller

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offer automationjack:

• started: April 28, 2026
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