North America SP-20 Smart-Phase Digital Rotary Phase Converter

SP-20 Single Phase to Three Phase Rotary Phase Converter

The SP-20 is a high-capacity single-phase to three-phase rotary phase converter built for workshops and light industrial environments running larger single-motor equipment. It provides stable, dependable three-phase power from a standard single-phase electrical supply, without the complexity or cost of full industrial systems.

If you’re operating a three-phase machine in the 10 to 12 HP range and need consistent starting power and smooth operation, the SP-20 is designed to handle that workload confidently.

Designed for Higher Horsepower Single-Motor Loads

The SP-20 supports a single motor start horsepower of up to 12 HP, making it well suited for larger lathes, mills, compressors, pumps, and other demanding shop equipment that require stronger startup current and sustained power.

With a maximum capacity of 38 amps, it offers meaningful headroom for stable operation under load, while remaining focused on single-machine applications rather than multi-load industrial setups.

Efficient Power for Daily Shop Use

As power requirements increase, efficiency still matters. The SP-20 maintains idle power usage at approximately $0.14 per hour, keeping operating costs predictable in workshops where the converter may remain powered throughout the day.

This makes it a practical choice for growing operations that need more capability without unnecessary energy waste.

Clear Electrical Requirements

The SP-20 is designed to operate on a minimum 50-amp single-phase circuit, a common setup in well-equipped workshops and light industrial spaces.

At approximately 274 pounds, it reflects its increased capacity and durability, while remaining manageable for proper installation in a fixed shop environment.

Built for Shops That Have Leveled Up

The SP-20 is intended for users who have clearly outgrown smaller converters and now require stronger starting performance and greater electrical stability. It focuses on reliable operation, straightforward setup, and predictable performance, without overengineering.

This is a sensible step when equipment size increases but full industrial rotary systems would be unnecessary.

Key Specifications

• Model: SP-20

• Single motor start capacity: up to 12 HP

• Maximum capacity amperage: 38 amps

• Minimum single-phase circuit size: 50 amps

• Idle power usage: approximately $0.14 per hour

• Weight: approximately 274 lbs

Ideal For

• Established workshops and light industrial spaces

• Single three-phase machines up to 12 HP

• Larger lathes, mills, compressors, and pumps

• Fabrication, maintenance, and production environments

• Users needing more starting power and stability without oversizing

A Strong, Sensible Upgrade in Three-Phase Power

The SP-20 is built for operators who need more horsepower and consistency than mid-range converters can deliver, without moving into complex industrial systems. It provides dependable performance, sensible efficiency, and a setup that fits real-world shop demands.

Energy Systems Central supplies power solutions designed around how people actually work. The SP-20 reflects that approach, capable, reliable, and purpose-built for higher-horsepower single-machine applications.