American Rotary AUL - UL Smart Phase Converter

AUL UL-Listed Series – Rotary Phase Converters

The AUL UL-Listed Series is engineered for applications where safety compliance is just as important as performance. Every AUL model is certified by Underwriters Laboratories (UL), meaning it has passed rigorous electrical safety testing against strict, globally recognized standards.

This makes the AUL series ideal for commercial, institutional, and industrial environments where UL compliance is required or strongly preferred by inspectors, insurers, or facility standards.

All AUL models are floor-mounted and designed for indoor installation. Some assembly is required.

AUL-5 Rotary Phase Converter

The AUL-5 is the entry-level model in the UL-Listed series, designed for small three-phase machines in environments where UL certification is required. It provides dependable, compliant three-phase power for light-duty applications.

Best for:
Small motors, light shop equipment, basic three-phase machines in UL-required environments.

AUL-10 Rotary Phase Converter

The AUL-10 offers increased capacity while maintaining full UL compliance. It is well suited for slightly larger motors and more frequent use in commercial or light industrial settings.

Best for:
Light commercial equipment, small lathes and mills, pumps, and workshop machinery requiring UL listing.

AUL-15 Rotary Phase Converter

The AUL-15 supports medium-duty applications where safety certification and consistent power delivery are both critical. It provides improved headroom for startup current and smoother operation under load.

Best for:
Medium-duty shop equipment, compressors, pumps, and production machinery in regulated environments.

AUL-20 Rotary Phase Converter

The AUL-20 is designed for higher-capacity general use in facilities where UL listing is required. It delivers stable three-phase power for larger machines operating on a regular basis.

Best for:
Commercial and light industrial equipment, larger motors, continuous-use machinery.

AUL-25 Rotary Phase Converter

The AUL-25 provides additional margin for heavier loads while maintaining UL-certified safety standards. It is well suited for growing operations that require both increased capacity and regulatory compliance.

Best for:
Larger shop equipment, compressors, pumps, and medium-duty production environments.

AUL-30 Rotary Phase Converter

The AUL-30 is built for demanding commercial and industrial applications where equipment size and runtime increase, but UL compliance remains mandatory.

Best for:
Production machinery, larger motors, commercial facilities with safety and inspection requirements.

AUL-40 Rotary Phase Converter

The AUL-40 delivers higher capacity for facilities running larger three-phase machines while meeting UL safety standards. It is intended for environments where electrical safety and reliability are non-negotiable.

Best for:
Heavy commercial equipment, large motors, regulated industrial environments.

AUL-50 Rotary Phase Converter

The AUL-50 is designed for high-capacity applications requiring both stable power delivery and UL certification. It supports larger motors and more demanding operational cycles.

Best for:
Industrial machinery, large compressors, production systems in UL-regulated facilities.

AUL-60 Rotary Phase Converter

The AUL-60 supports high-horsepower loads while maintaining strict safety compliance. It is suited for facilities where equipment value, uptime, and regulatory approval are all critical.

Best for:
Industrial production equipment, large pumps, heavy-duty machinery.

AUL-75 Rotary Phase Converter

The AUL-75 is intended for higher-horsepower systems where UL listing is required for installation approval. It provides reliable power for demanding industrial applications.

Best for:
Large industrial machines, high-duty production environments, regulated facilities.

AUL-100 Rotary Phase Converter

The AUL-100 marks the transition into multi-unit paralleled systems. For models AUL-100 and above, multiple converters are paralleled through enclosed contactors to prevent back feeding and provide phase monitoring.

These enclosed contactors are already included in the price for AUL-100 and above.

Best for:
Large industrial facilities, high-horsepower equipment, UL-regulated installations.

AUL-120 / AUL-150 / AUL-200 / AUL-300 Rotary Phase Converters

These models are designed for the most demanding UL-required applications. Multiple units are safely paralleled using enclosed contactors to support very large motors while maintaining electrical safety and phase monitoring.

They are intended for large-scale industrial, institutional, and commercial facilities where compliance, safety, and uptime are critical.

Best for:
Heavy industrial plants, large production lines, institutional facilities, and mission-critical equipment requiring UL certification.