Morningstar ProStar PS-15: The Industry Standard for Mid-Range Solar Control

The Morningstar ProStar PS-15 has been the world’s leading mid-range PWM solar controller since 1995, with over 350,000 units installed in more than 100 countries. This 15-amp, 12V/24V dual-voltage controller is the perfect bridge between small residential units and large industrial systems, offering professional-grade reliability for off-grid homes, remote cabins, and telecommunications sites.

What defines the ProStar is its "Tropicalization"—a combination of conformal coating on the internal circuitry, stainless steel fasteners, and a massive anodized aluminum heat sink. This ensures the PS-15 thrives in high-temperature, high-humidity environments where lesser controllers fail. With an estimated 15-year service life, it is the definition of "set it and forget it" off-grid power.

Why the ProStar PS-15 Leads the Market:

• Advanced 4-Stage Charging:Patented algorithms for Bulk, Absorption, Float, and Equalize stages significantly extend battery life and increase system capacity.
• Extreme Durability: Rated for full current operation at ambient temperatures up to 60°C. No cooling fans required, eliminating a common point of failure.
• Low Noise Design: Meets FCC Class B specifications, making it ideal for systems with sensitive telecommunications or audio equipment.
• Comprehensive Protections: Fully protected against short-circuits, overloads, reverse polarity, and lightning transients with automatic recovery.
• Accurate Monitoring: Features 4-LED battery status indicators and self-diagnostics to alert you to any system faults immediately.
• Parallel Capability: Can be wired in parallel for systems requiring up to 300 amps of solar input.

Technical Specifications:

Technical Tip: The ProStar PS-15 is "Series PWM," which is much more efficient than cheaper "Shunt" controllers. For maximum accuracy, we recommend utilizing the dedicated battery voltage sense terminals, especially if the controller is mounted more than 5 meters from the battery bank.