Electric Motor Voltage Types
Selecting the correct motor voltage ensures reliable performance, safety, and compatibility with your facility’s electrical system.
Electric motors are available in a range of single-phase, three-phase low voltage, and medium-voltage configurations — each designed for specific loads, distances, and industrial environments.
This guide outlines each voltage category, explains common use cases, and connects you directly to our stocked models across multiple horsepower, enclosure, and mounting types.
Single-Phase Motors (120 V / 240 V)
Single-phase electric motors are ideal for residential, commercial, and light industrial applications where three-phase power isn’t available.
They typically power smaller equipment such as fans, pumps, compressors, and conveyors.
Specification Range / Detail
Voltage 120 V or 240 V AC
Horsepower Range Fractional – 5 HP
Speed Options 1200 / 1800 / 3600 RPM
Enclosures ODP, TEFC
Mounting Types Foot / C-Face / Rigid Base
Common Brands US Electric, Worldwide Electric
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Three-Phase Low-Voltage Motors (208 – 575 V)
Three-phase low-voltage motors are the workhorses of industrial equipment — balancing efficiency, torque, and reliability.
They’re used in manufacturing, material handling, HVAC systems, and processing facilities where three-phase power is standard.
Specification Range / Detail
Voltage Options 208 V, 230 V, 460 V, 575 V
Horsepower Range 1 – 500 HP
Speed Options 900 / 1200 / 1800 / 3600 RPM
Enclosures ODP, TEFC, TEXP
Mounting Types Foot, C-Face, Vertical
Common Brands Brook Crompton, US Electric, Worldwide Electric
Canadian facilities frequently use 575 V systems for longer cable runs and higher efficiency, while 460 V remains the North American standard for heavy-duty industrial use.
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Medium-Voltage Motors (2300 – 6600 V)
Medium-voltage motors are engineered for large-scale industrial systems, delivering thousands of horsepower at optimized current draw.
They’re used in refineries, paper mills, mines, and power-generation facilities that require long-distance distribution or high-load startup control.
Specification Range / Detail
Voltage Range 2300 V – 6600 V
Horsepower Range 200 – 5000 HP+
Designs Custom TEFC / WPI / Explosion-Proof
Mounting Types Horizontal Foot, Vertical Flange
Control Compatibility VFD / Soft-Start Systems
Brands Brook Crompton, WEG, U.S. Electric
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How to Select the Correct Voltage
Choosing the right voltage depends on power availability, distance from supply, and load type.
Facility Supply 120/240 V → Single-phase; 208/460/575 V → Three-phase
Motor Size Below 5 HP → Single-phase; Above 5 HP → Three-phase
Cable Distance Long runs → Higher voltage (460 V or 575 V)
Industrial Load Compressors, Pumps, Conveyors → Three-phase
Heavy Infrastructure Refineries, Utilities → Medium Voltage
Request a Quote or Spec Sheet
Need guidance selecting the proper voltage configuration for your application?
Our specialists can help determine motor size, supply compatibility, and enclosure type for your project.
Request a Quote or Request Spec Sheet to receive detailed data, pricing, and lead times for your chosen voltage class.