Finding a reliable 1 HP phase converter can unlock the use of three-phase machinery on single-phase power. This guide highlights five top products that excel in converting single-phase power to three-phase, or provide robust single-phase motor control for 1 HP systems. Each option prioritizes ease of use, compact design, and UL or safety certifications. Use the buying guide below to compare performance, connection simplicity, and protection features across these 1 HP and near-1 HP devices.
Summary of Selected Products
| Product | Brand | Type | Key Benefit |
|---|---|---|---|
| DPS 2HP My-PS-2 | DPS | Single to 3 Phase Converter | Runs 1 HP motors with single-phase input; compact and UL listed |
| DPS 1HP My-PS-1 | Myung Youn Electronics | Single to 3 Phase Converter | Simple connection; small size; 200-240V |
| XCFDP AC 220V/0.75kw | XCFDP | VFD (Single-Phase to Three-Phase) | 1 HP equivalent, 0-400 Hz, robust cooling and protection |
| ATO 2HP VFD | ATO | Single Phase to Single Phase VFD | 1.5 kW, versatile control with keypad and serial options |
| Phase-A-Matic R-1 | Selectum | Rotary Phase Converter | Reliable 1 HP rotary conversion, UL Certified |
All five options are suitable for 1 HP motor setups and offer varying approaches—from static converters to variable frequency drives and rotary phase converters. Consider your space, the type of motor you’re running, and whether you need true 3-phase output or simple phase-shifting for compatible machinery.
DPS 2HP My-PS-2: 1 HP Single to 3 Phase Converter
DPS offers a compact 2HP unit designed to run a 1 HP motor from single-phase input. The product claims straightforward connection between DPS and the motor, with a small, lightweight footprint that aids in tight workspace setups. It is UL listed, adding a level of safety compliance for American users. This converter concentrates on simplicity and reliable single to three-phase operation, making it a practical choice for light-duty workshop use.
DPS 1HP My-PS-1: 1 HP Converter For Single Phase To Three Phase
This 1 HP converter from DPS is designed for easy connection to a single-phase source and a three-phase motor. The model emphasizes a compact form factor and light weight, which simplifies installation in smaller shops. It’s marketed for simple motor compatibility, aiming to minimize setup complexity for users needing a quick 3-phase solution without a larger investment in equipment.
XCFDP VFD 0.75kW 1HP: Single-Phase To Three-Phase Drive
The XCFDP VFD provides a genuine 0.75 kW (1 HP) drive with single-phase input and three-phase output. It supports 50/60 Hz input and up to 400 Hz output, with a compact 4.57 x 3.98 x 6.38 inch enclosure. It emphasizes copper coil quality, protection features, and effective cooling for safer operation. This drive is ideal when precise speed control and motor protection are priorities in a 1 HP setup.
ATO 2HP VFD: 1-Phase Input To 1-Phase Output
The ATO 2HP VFD converts single-phase 220V input to single-phase output, offering 1.5 kW of drive power with a 1-phase control scheme. The drive is described as featuring multiple control modes and a keypad interface, enabling versatile speed regulation for connected motors. It provides a practical solution when true three-phase output is not required but motor speed control and efficiency improvements are desired for a 1 HP equivalent setup.
Phase-A-Matic R-1: 1 HP Rotary Phase Converter
The Phase-A-Matic R-1 Rotary Phase Converter provides true three-phase production from a single-phase source for 1 HP motors. It is UL certified, offering dependable performance for rotary conversions. Rotary converters are valued for handling varying load conditions and providing consistent three-phase power, making them a strong option when you need steady torque across a broad range of operations in a compact package.
Buying Guide: Key Purchase Considerations
- Motor type and required output: Decide between true three-phase output (rotary or VFD-based) and single-phase with phase-shifting. For consistent torque under varying loads, rotary converters or VFDs with 3-phase output are often preferred.
- Input power and voltage compatibility: Ensure the unit supports your available single-phase supply (commonly 120V or 240V in the US). Look for 200-240V input models if that matches your shop’s supply.
- Load suitability and motor ratings: Verify that the converter or drive can handle your motor’s nameplate HP, voltage, and current. For 1 HP motors, models labeled 1 HP or near-1 HP with adequate headroom are ideal.
- Protection and safety features: UL or CE certifications, overcurrent protection, short-circuit protection, and thermal protection help prevent motor damage and electrical hazards.
- Ease of installation and setup: Some devices emphasize plug-and-play connections with minimal wiring, while VFDs may require programming and parameter setup for speed control and ramping.
- Control options and speed range: If precise motor speed control is needed, a VFD with adjustable frequency (up to 0-400 Hz in some models) offers more control than basic phase converters.
- Footprint and weight: In small workshops, a compact, lightweight unit can simplify installation and relocation as needed.
- Multi-motor compatibility: Some single-to-three-phase converters are designed for one motor only; others support multiple motors with appropriate ratings. Check the product’s motor-per-device limit.
When evaluating these options, balance the need for true three-phase power, ease of use, space constraints, and potential energy efficiency gains. Each selection above offers distinct advantages for different kinds of 1 HP applications, from simple motor drives to more precise speed control solutions.