Digital Phase Converter

We carry a number of different digital phase converter models. The model that we will recommend for you will varry depending on the equipment you are trying to run. The table below shows the converters that we stock.

Digital Phase Converters
Model PH330 PH355 PH380 PH3110 PH3160
Rated HP 10 20 30 40 60
Output KVA* 15 26 40 53 80
Input voltage
187 V to 260 V
Phase to phase voltage balance**
Better than 1%
Maximum steady state output 36 amps 64 amps 96 amps 130 amps 190 amps
Momentary overload current, 4 seconds 150 amps 280 amps 400 amps 560 amps 800 amps
Output voltage
Equal to single-phase input voltage
Standy-by power consumption 100 watts 240 watts 400 watts 480 watts 800 watts
97% typical
Type 1 indoor or 3R rain proof
Weight 75 lb. 115 lb. 180 lb. 260 lb. 380 lb.
Dimensions (H x W x D in.)
Type 1 indoor or 3R rain proof
Type 1 indoor 20 x 17 x 13 26 x 19 x 14 31 x 24 x 13 26 x 19 x 14 (x2) 31 x 24 x 13 (x2)
Type 3R rainproof 23 x 17 x 16 30 x 19 x 14 35 x 24 x 13 30 x 19 x 14 (x2) 35 x 24 x 13 (x2)
Product Specs (PDF) Electrical
Ease of Installation

The PH converter can accomodate a transformer connected directly to its output terminals (within code consideration), followed by a standard power distribution system. The installation is straightforward and easy.

Power for Multiple Motor Loads

Digital phase converters are an alternative to solid-state converters where more than one inductive motor load exists, or where the load is resistive in nature, or where variable frequency drives and/or similar controllers form part of the load. Digital converters are stocked in our Edmonton, Alberta, Canadian facility and CSA approved for Canada.


PhaseMAXX can safely power virtually any three-phase application within its rated capacity. It can power resistive and capacitive loads as well as motor or inductive loads. Its power quality makes it ideal for powering demanding loads such as CNC machine equipment, submersible pumps and other voltage sensitive applications rated either 50 or 60 Hz.

Suitability for On-demand Operation

The PH is especially well suited for on-demand applications such as refrigeration compressors and other cyclic loads. Because the PH has such low idle current (PH330 has 100w of stand-by power consumption), it is ideal for operation of 3-phase loads that are difficult to operate with a Rotary type converter.

Troubleshooting Made Easy

The PH contains three LED (Red, Green, Yellow) indicators that are either steady-state ON, or flashing depending on the fault. The manual supplied with the PH outlines fault conditions related to the state of LEDs and the required corrective action.

Power Quality

PhaseMAXX Power Products Group digital converters produce true sinusoidal three-phase output voltages balanced to within 1% under all load conditions. Because the output voltage is a sine wave with very low harmonic distortion, all types of three-phase equipment can be safely powered. Input current is true sinusoidal, near unity (0.99) power factor and does not produce harmonics which can pollute the power grid.

Automatic Power Restart

The PH includes a built-in 3-pole contactor that closes (5 - 8 seconds) after Utility power is applied. 3-phase power is only passed onto the converter's output once the 3-pole contactor closes. This feature is ideal for automatically re-starting 3-phase loads after a Utility power failure is corrected. The (5 - 8 second) delay also allows the connection of a 3-phase transformer to the converter's output terminals - without additional (power ON delay) switchgear.