Morningstar ProStar PS-30: The Professional Choice for 30A Solar Regulation

The Morningstar ProStar PS-30 is the world’s leading mid-range PWM solar controller, delivering a robust 30 amps of charging and load current. With over 350,000 units installed in the harshest environments globally, the ProStar sets the standard for reliability in professional off-grid systems. Whether you are powering a remote cabin, a telecommunications tower, or a coastal navigation aid, the PS-30 provides the "legendary" performance required for long-term mission-critical service.

Engineered to thrive where others fail, the PS-30 features "Tropicalization"—including conformal coating on the internal circuitry and marine-rated terminals. It is one of the few controllers in its class approved for Hazardous Locations (Class 1 Division 2 and ATEX/IECEx Zone 2), making it essential for oil and gas fields and industrial sites. Its fanless design and massive anodized aluminum heat sink ensure full 30A operation even in ambient temperatures up to 60°C.

Key Professional Advantages:

• Unmatched Reliability: 100% solid-state design with an estimated 15-year service life. No cooling fans or mechanical relays to wear out or fail.
• High Power Density: Efficiently manages up to 500W of solar at 12V or 1000W at 24V, making it ideal for medium-sized off-grid arrays.
• Advanced Data Logging: Internal memory stores up to 256 days of detailed solar performance and load consumption data for system troubleshooting and optimization.
• Industrial Compliance: Certified for use in hazardous locations (C1D2, ATEX, IECEx) and meets FCC Class B specifications for low electronic noise at telecom sites.
• Intelligent Battery Care: 4-stage charging (Bulk, Absorption, Float, and Equalize) with temperature compensation extends battery life and maximizes capacity.
• Scalable Power: Multiple ProStar units can be wired in parallel to handle massive arrays up to 300 amps.

Technical Specifications:

Technical Tip: The PS-30 supports up to #6 AWG wire. For 30A systems, we strongly recommend using the "Battery Sense" terminals. This allows the controller to measure the exact battery voltage without being affected by the voltage drop in the main power cables, ensuring much more accurate charging.