17,368 Products Indexed
AC Induction Motors — Specifications & Crossover Database
Search 16,000+ AC induction motors from ABB, Baldor-Reliance, WEG, Siemens, Nidec, Marathon, Leeson, Toshiba, and TECO. Filter by horsepower, voltage, NEMA frame size, enclosure type, and efficiency class. Find replacements and crossovers instantly.
Key Specification Fields
Horsepower (HP)
Output power rating from 1/4 HP fractional through 500+ HP integral
Voltage
230V, 460V, or 575V for three-phase; 115V or 230V for single-phase
Phase
Single-phase for light commercial; three-phase for industrial applications
NEMA Frame Size
Standardized mounting dimensions — 56C through 449T — interchangeable across manufacturers
Enclosure Type
TEFC (outdoor/dirty), ODP (indoor/clean), TENV, Washdown (IP55/IP65), Explosion Proof
Duty Type
General Purpose, Severe Duty, Washdown, Explosion Proof, or Pump Duty
Efficiency Class
NEMA Premium Efficient or IE3 / IE2 for energy-regulated environments
RPM
Synchronous speed: 3600, 1800, 1200, or 900 RPM (2, 4, 6, or 8 pole)
Common Applications
- Pumps and compressors
- Fans and blowers
- Conveyors and material handling
- Mixers and agitators
- Machine tool spindles
- HVAC equipment
Frequently Asked Questions
What is the difference between TEFC and ODP motors?
TEFC (Totally Enclosed Fan Cooled) motors have a sealed housing suitable for outdoor, dirty, or wet environments. ODP (Open Drip Proof) motors have ventilation openings that allow air through the windings — they run cooler and more efficiently in clean, dry indoor environments but cannot be exposed to water or contaminants.
What does the NEMA frame size mean?
NEMA frame sizes standardize motor mounting dimensions across manufacturers. The first two digits of the frame number divided by 16 give the shaft centerline height in inches. For example, a 256T frame has a shaft centerline 256 ÷ 16 = 16 inches above the base. The 'T' suffix indicates a modern T-frame design. Any 256T motor from ABB, WEG, or Marathon will mount in the same footprint.
How do I find a crossover replacement motor?
Use SpecBase's Crossover Tool at /crossover. Enter the model number of the motor you need to replace and the tool will find equivalent motors from other manufacturers matched by HP, voltage, frame size, and enclosure type — ranked by compatibility score.
What is a Severe Duty motor?
Severe Duty motors are designed for harsh industrial environments: heavy moisture, corrosive atmospheres, frequent starts, or high ambient temperatures. They typically feature Class F or H insulation, TEFC or IP55+ enclosures, stainless steel or epoxy-coated hardware, and reinforced shaft seals. Common brands include Baldor-Reliance ECP, Marathon Black Max, and WEG W22 Severe Duty.