SKU: 55244271785

North America SP-40 Smart-Phase Digital Rotary Phase Converte

Sale price$2857.05 Regular price$3174.50
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Description

North America SP-40 Smart-Phase Digital Rotary Phase ConverteSP 40 Single Phase to Three Phase Rotary Phase Converter The SP 40 is a high capacity single phase to three phase rotary phase converter built for workshops and light industrial environments running very large single motor equipment. It delivers stable, dependable three phase power from a single phase electrical supply, without pushing you into full scale industrial power systems. If youre operating a large three phase machine in the 20 to 25 HP range

SP-40 Single Phase to Three Phase Rotary Phase Converter

The SP-40 is a high-capacity single-phase to three-phase rotary phase converter built for workshops and light industrial environments running very large single-motor equipment. It delivers stable, dependable three-phase power from a single-phase electrical supply, without pushing you into full-scale industrial power systems.

If you’re operating a large three-phase machine in the 20 to 25 HP range and need strong starting performance with consistent operation under load, the SP-40 is designed to handle that level of demand with confidence.


Designed for Very Large Single-Motor Loads

The SP-40 supports a single motor start horsepower of up to 25 HP, making it a strong fit for large lathes, mills, compressors, pumps, and other high-demand shop equipment that require substantial starting current and stable power delivery.

With a maximum capacity of 72 amps, it provides the electrical headroom needed for smooth startups and reliable operation, while remaining focused on single-machine applications rather than multi-load industrial setups.


Efficient Power at High Capacity

At this level of output, efficiency still matters. The SP-40 has an idle power usage of approximately $0.28 per hour, helping keep operating costs predictable in shops where the converter may remain powered for extended periods.

It’s built to deliver serious capability without unnecessary energy waste.


Electrical Requirements That Match Serious Equipment

The SP-40 is designed to operate on a minimum 100-amp single-phase circuit, which is typical for well-equipped workshops and light industrial facilities running large machinery.

At approximately 387 pounds, it reflects the robust construction and capacity required to support higher-horsepower equipment and is best suited for permanent installation in a dedicated shop or plant environment.


Built for Shops Running Big, Demanding Machines

The SP-40 is intended for operators who have clearly outgrown mid-range converters and now require high starting torque, electrical stability, and dependable performance day after day.

It focuses on reliability and straightforward operation, without unnecessary complexity or overengineering.


Key Specifications

  • Model: SP-40

  • Single motor start capacity: up to 25 HP

  • Maximum capacity amperage: 72 amps

  • Minimum single-phase circuit size: 100 amps

  • Idle power usage: approximately $0.28 per hour

  • Weight: approximately 387 lbs


Ideal For

  • Established workshops and light industrial facilities

  • Single three-phase machines up to 25 HP

  • Large lathes, mills, compressors, and pumps

  • Fabrication, production, and maintenance environments

  • Users needing high starting power and long-term stability


High-Capacity Three-Phase Power Without Industrial Complexity

The SP-40 is built for operations that need serious horsepower from a single-phase supply without stepping into full industrial rotary systems. It delivers dependable performance, predictable efficiency, and a setup that aligns with real-world shop requirements.

Energy Systems Central supplies power solutions designed around how people actually work. The SP-40 reflects that approach, strong, reliable, and purpose-built for high-horsepower single-machine three-phase applications.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 55244271785

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Reviewed in the United States on February 8, 2026
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Reviewed in the United States on May 23, 2026
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Reviewed in the United States on April 28, 2025
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Randall P
Omaha, US
★★★★★ 4
Very well built.
Well build. Very solid for the price. I used #1 AWG cable. I don't like the pinch bolt connection. It tries to drill through the cable, and spreads the strands. Only about 2/3rds are pinched under the knurled bolt tip. I'll keep an eye on it, and if the connection heats up, I'll pull apart, straighten the strands, and tin the ends with solder so they don't crush much. See how that works. A concave, half circle piece under the pinch bolt would be better IMO. That would keep strands together as they crushed down.
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Reviewed in the United States on December 6, 2024
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Meeikal
Carnegie, US
★★★★★ 5
Solid choice for fuse holder
Size: 300A Fuse Holder
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Reviewed in the United States on January 14, 2026

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