Model Documentation

DualZone Series Phase Converters

The DualZone Series provides two independent output zones from a single converter — letting you power separate machines or circuits with individual disconnects, all from one unit. Built with a NEMA 4 weatherproof enclosure for outdoor, barn, and washdown environments.

Dual Output Zones NEMA 4 Weatherproof Outdoor Rated Washdown Safe 230V Single Phase In 230V Three Phase Out Lifetime Warranty
Best For

Two machines. One converter.

The DualZone is designed for situations where you need to run two separate pieces of equipment from a single phase converter but want independent shutoffs — or where you have equipment in two different physical locations in the same shop.

  • Barns and agricultural buildings — outdoor-rated, moisture-resistant
  • Outdoor pump stations — NEMA 4 handles direct weather exposure
  • Food processing facilities — washdown-safe enclosure
  • Shops with separate machine zones — welding area + machining area
  • Two-bay garage shops — independent disconnects for each bay
  • Agricultural facilities — barn equipment + outdoor irrigation

Dual Output Zones Explained

Each DualZone unit provides two separate three-phase output terminals with independent contactors. You can turn one zone off without affecting the other. This is useful when:

  • You want to lock out one machine for maintenance without shutting down the converter
  • One machine has a problem and you need to isolate it while continuing to run the other
  • You want to run different machinery in different parts of a building
  • Electrical code requires individual disconnects for each piece of equipment

NEMA 4 vs Standard Enclosures

NEMA 4 means the enclosure is rated for:

  • Dust-tight — no dust ingress under any conditions
  • Watertight — can withstand hose-directed water (washdown)
  • Rain-tight — suitable for direct outdoor installation (covered)
  • Corrosion-resistant steel construction

All Phoenix converters use NEMA 4 enclosures as standard. The DualZone is notable for adding dual output zone capability to this already-rugged platform.

Key Features

  • Two independent output zones — individual contactors and terminals
  • NEMA 4 steel enclosure — weatherproof, washdown-safe
  • 230V single-phase input → 230V three-phase output
  • TEFC cast-iron idler motor
  • Lifetime transferable warranty
  • Made in Phoenix, Arizona
Sizing

Sizing the DualZone

Size for the total combined load of both zones. Use the largest machine's full multiplier plus a reduced factor for the second machine.

Example: Farm Building

Zone A: 10 HP irrigation pump (very hard load)

10 × 2.5 = 25 HP base

Zone B: 5 HP grain auger (medium load)

5 × 0.75 = 3.75 HP added

Total: 28.75 HP → Choose 30 HP DualZone

Example: Machine Shop

Zone A: 15 HP lathe (medium load)

15 × 1.5 = 22.5 HP base

Zone B: 10 HP mill (hard load)

10 × 1.0 = 10 HP added

Total: 32.5 HP → Choose 40 HP DualZone

All Models

DualZone Series

ModelHPInputOutputZonesEnclosureWarranty
DualZone-5 5 HP 230V 1Ø 230V 3Ø Dual NEMA 4 Lifetime
DualZone-10 10 HP 230V 1Ø 230V 3Ø Dual NEMA 4 Lifetime
DualZone-15 15 HP 230V 1Ø 230V 3Ø Dual NEMA 4 Lifetime
DualZone-20 20 HP 230V 1Ø 230V 3Ø Dual NEMA 4 Lifetime
DualZone-30 30 HP 230V 1Ø 230V 3Ø Dual NEMA 4 Lifetime
DualZone-40 40 HP 230V 1Ø 230V 3Ø Dual NEMA 4 Lifetime
DualZone-50 50 HP 230V 1Ø 230V 3Ø Dual NEMA 4 Lifetime
DualZone-60 60 HP 230V 1Ø 230V 3Ø Dual NEMA 4 Lifetime

Call (800) 417-6568 for DualZone pricing and custom configurations.

DualZone

DualZone Models

Model HP Input Output Enclosure Warranty Buy
GP20NL 20 HP 230V 1Ø 230V 3Ø NEMA 4 Lifetime Buy →
GP25NL 25 HP 230V 1Ø 230V 3Ø NEMA 4 Lifetime Buy →
GP30NL 30 HP 230V 1Ø 230V 3Ø NEMA 4 Lifetime Buy →
GP40NL 40 HP 230V 1Ø 230V 3Ø NEMA 4 Lifetime Buy →
GP50NL 50 HP 230V 1Ø 230V 3Ø NEMA 4 Lifetime Buy →