Baldor-Reliance Super-E® NEMA Premium Efficiency Motors
The Baldor-Reliance Super-E® NEMA Premium Motor Series (featured model: EM3770T 7.5 HP 213T 4-pole) is North America's premier flagship general-purpose industrial motor line, engineered to deliver exceptional energy savings, low operating temperatures, and long service life. Designed to meet or exceed **NEMA Premium® efficiency standards (equivalent to IEC IE3 Premium Efficiency)**, these motors feature heavy-duty cast-iron frames (180T to 449T) or heavy-gauge steel frames (56 to 140T), precision-balanced rotors, and IP44/IP55 enclosure protection. Operating across **TEFC (Totally Enclosed Fan Cooled)** and **ODP (Open Drip Proof)** designs, Super-E motors incorporate Class H ISR® (Inverter Spike Resistant) copper winding insulation, making them fully rated for variable frequency drive operation with **ABB ACS580 and ACS880 drives**. Covering power ratings from 1/4 HP up to 500 HP across 2-pole, 4-pole, and 6-pole speeds, Baldor Super-E motors serve as the direct 1-to-1 mechanical replacement for industrial fans, centrifugal pumps, belt conveyors, air compressors, and general manufacturing equipment.
Technical Specifications
| Featured Model | EM3770T (Catalog No. EM3770T, 7.5 HP, 4-Pole 1770 RPM, 230/460V 60Hz, NEMA 213T Frame, TEFC Cast Iron) |
|---|---|
| Brand / Manufacturer | Baldor-Reliance (ABB Group) |
| Product Series | Super-E® NEMA Premium Efficiency General Purpose AC Motors (EM / CEM Prefix) |
| NEMA Frame Sizes Covered | NEMA 56, 143T, 145T, 182T, 184T, 213T, 215T, 254T, 256T, 284T, 286T, 324T, 326T, 364T, 365T, 405T, 444T, 445T, 449T |
| Energy Efficiency Class | NEMA Premium® Efficiency (Meets / Exceeds US DOE Energy Mandates; Equivalent to IEC IE3) |
| Rated Power Range | 1/4 HP to 500 HP (0.18 kW to 370 kW) |
| Mains Voltage Supply | Tri-Voltage 208-230/460V 60Hz, 460V, 575V Canadian Voltage (50Hz Multi-Rating Options) |
| Enclosure & Mounting | TEFC & ODP Enclosures; Rigid Foot Mount B3, C-Face Flange (CEM Models), Footless C-Face Mount |
Documentation & Resources
Baldor-Reliance Super-E Series Frame Size, Speed & Power Matrix
Full selection matrix for Baldor-Reliance Super-E NEMA Premium efficiency motors. Review frame sizes, 4-pole/2-pole ratings, full load currents, and standard catalog codes:
| Horsepower (HP) | 4-Pole Speed (RPM) | NEMA Frame Size | Rated Current (460V 4P) | Baldor Catalog Number (Foot) | Baldor Catalog Number (C-Face) |
|---|---|---|---|---|---|
| 1.5 HP | 1750 RPM | 145T | 2.2 A | EM3558T | CEM3558T |
| 2 HP | 1750 RPM | 145T | 2.9 A | EM3559T | CEM3559T |
| 3 HP | 1750 RPM | 182T | 4.2 A | EM3611T | CEM3611T |
| 5 HP | 1750 RPM | 184T | 6.7 A | EM3615T | CEM3615T |
| 7.5 HP | 1770 RPM | 213T | 9.6 A | EM3770T | CEM3770T |
| 10 HP | 1770 RPM | 215T | 13.0 A | EM3774T | CEM3774T |
| 15 HP | 1770 RPM | 254T | 19.0 A | EM2333T | CEM2333T |
| 20 HP - 30 HP | 1770 RPM | 256T - 286T | 25.0 A - 37.0 A | EM2334T / EM2515T | CEM2334T / CEM2515T |
| 40 HP - 500 HP | 1780 RPM | 324T - 449T | 49.0 A - 580.0 A | EM4103T / EM4400T | CEM4103T / CEM4400T |
Legacy NEMA Standard Motors to Baldor Super-E IE3 Upgrade Guide
Older standard efficiency NEMA motors (M3558T, M3615T, M3770T, or competing NEMA brands) can be directly upgraded to current Baldor Super-E NEMA Premium motors:
| Legacy NEMA Motor Code (Standard Eff.) | Legacy Power & Frame | Current Baldor Super-E Equivalent | Key Performance & Efficiency Upgrades |
|---|---|---|---|
| Baldor M3558T / M3559T | 1.5 HP / 2 HP (Frame 145T) | Baldor EM3558T / EM3559T 100% Drop-In | NEMA Premium efficiency, lower electrical power draw, Class H ISR VFD insulation. |
| Baldor M3615T | 5 HP (Frame 184T) | Baldor EM3615T 100% Drop-In | Identical shaft diameter and keyway, reduced operating heat, IP54/IP55 sealing. |
| Baldor M3770T | 7.5 HP (Frame 213T) | Baldor EM3770T 100% Drop-In | Matches standard B3 foot bolt hole centers, energy savings up to 12% annually. |
| Baldor M2333T / M2515T | 15 HP / 30 HP (Frame 254T/286T) | Baldor EM2333T / EM2515T 100% Drop-In | Direct drop-in replacement for industrial pumps, HVAC blowers, air compressors, and conveyors. |
Expert Technical Sourcing & System Integration Notes
When replacing older NEMA standard efficiency motors across industrial plants or OEM machinery, switching to current Baldor Super-E motors delivers immediate advantages: full compliance with US Department of Energy (DOE) energy regulations, reduced operating electricity costs, lower winding temperature rise, and complete physical interchangeability without altering mounting plates or coupling alignment. Simply provide us with your existing motor nameplate catalog number or specification number (e.g., EM3770T or 37A011X826G1), and our technical engineering team will deliver a 100% compliant replacement specification and proposal.
Core Benchmark Model Standard Configurations
- EM3558T (1.5 HP 145T Super-E)
- EM3559T (2 HP 145T Super-E)
- EM3611T (3 HP 182T Super-E)
- EM3615T (5 HP 184T Super-E)
- EM3770T (7.5 HP 213T Super-E)
- EM3774T (10 HP 215T Super-E)
- EM2333T (15 HP 254T Super-E)
- EM2334T (20 HP 256T Super-E)
- EM2513T (25 HP 284T Super-E)
- EM2515T (30 HP 286T Super-E)
- CEM3615T (5 HP 184TC C-Face)
- CEM3770T (7.5 HP 213TC C-Face)
- CEM3774T (10 HP 215TC C-Face)
- Baldor M3615T Motor Replacement
- Baldor M3770T Motor Replacement
- Baldor M2333T Motor Replacement
- Baldor Super-E NEMA 575V Motor
- Baldor Super-E ODP General Motor
- Baldor Super-E TEFC Cast Iron
- Baldor Super-E VFD ISR Duty
