42 · 48 · 56
Frames 42–56
Compact and fractional-horsepower equipment, fans, pumps and OEM machinery.
AC motors · North American configurations
NEMA-Frame AC Motors
Single- and three-phase motor solutions across NEMA frames 42–215T, selected around horsepower, supply, speed, mounting, enclosure and equipment duty.
Core NEMA motor range
Frame & Output Selection
Indicative 60 Hz selection envelope for initial product routing. Final horsepower, speed, construction and certification follow application review.
143T · 145T · 182T · 184T
Frames 143T–184T
Core general and medium-duty industrial frames for pumps, conveyors, process equipment and air movement.
213T · 215T
Frames 213T–215T
Larger industrial equipment, pumps, fans and continuous-duty applications.
EnclosureODP, TEFC or TEAO subject to frame and duty
EfficiencyHigh-efficiency and NEMA Premium configurations by rating
DutyContinuous or intermittent; thermal duty confirmed by application
OptionsBrake, encoder, thermal protection and modified shaft
Project-specific requirements: Other NEMA frame sizes and modified mechanical or electrical arrangements can be considered where the application justifies a dedicated engineering review.
Representative 60 Hz selection data
NEMA Motor Technical Data
NEMA frame does not uniquely determine horsepower. Use the values below as representative catalogue envelopes before final motor and application review.
| NEMA frame | Class | Power envelope | Typical voltage | Poles | Typical full-load speed | Typical application |
|---|---|---|---|---|---|---|
| 42 | Fractional HP | ≈1/20–1/3 hp | 115/230 V 1-ph or 230/460 V 3-ph | 2 / 4 / 6 | ≈3,450 / 1,725 / 1,140 rpm | Fractional-horsepower machinery |
| 48 | Fractional HP | ≈1/8–1/2 hp | 115/230 V 1-ph or 230/460 V 3-ph | 2 / 4 / 6 | ≈3,450 / 1,725 / 1,140 rpm | Pumps, fans and light machinery |
| 56 | Fractional / integral | ≈1/4–3 hp | 115/230 V 1-ph or 230/460 V 3-ph | 2 / 4 / 6 | ≈3,450 / 1,725 / 1,140 rpm | General purpose, pump and fan |
| 143T | T-frame | ≈1–3 hp | 230/460 V 3-ph | 2 / 4 / 6 | ≈3,500 / 1,750 / 1,170 rpm | General industrial |
| 145T | T-frame | ≈1.5–3 hp | 230/460 V 3-ph | 2 / 4 / 6 | ≈3,500 / 1,750 / 1,170 rpm | General industrial |
| 182T | T-frame | ≈2–5 hp | 230/460 V 3-ph | 2 / 4 / 6 | ≈3,500 / 1,750 / 1,170 rpm | Conveyors, pumps and machinery |
| 184T | T-frame | ≈3–5 hp | 230/460 V 3-ph | 2 / 4 / 6 | ≈3,500 / 1,750 / 1,170 rpm | Conveyors, pumps and machinery |
| 213T | T-frame | ≈5–10 hp | 230/460 V 3-ph | 2 / 4 / 6 | ≈3,500 / 1,750 / 1,170 rpm | Industrial machinery |
| 215T | T-frame | ≈7.5–15 hp | 230/460 V 3-ph | 2 / 4 / 6 | ≈3,500 / 1,750 / 1,170 rpm | Higher-duty industrial machinery |
Selection basis: Standard frame assignments vary with speed, enclosure and motor design. Final horsepower, torque, full-load speed, voltage, efficiency and certification are stated on the quotation and selected-motor datasheet.
AC Motors IEC, NEMA and Matching InvertersDownload the combined representative technical data and inverter guidance.
Technical PDFRequest Technical Datasheet →Mechanical integration
Common Mounting Arrangements
Mounting availability is confirmed against the selected frame, enclosure and application.
Rigid Base
Foot-mounted construction for installation on machinery bases, skids and common industrial equipment.
C-Face
Face-mounted configuration for direct coupling to pumps, gear units and driven equipment.
Base with C-Face
Combined foot-and-face arrangement providing flexible installation and direct integration.
Application-Specific
Modified flange, shaft, base and interface arrangements for OEM equipment requirements.
Define the right configuration
Principal NEMA Selection Parameters
These inputs establish the appropriate frame, performance and construction route. Hover, focus or tap each item for the engineering implication.
Beyond the standard frame
Modified NEMA Motor Solutions
SDT can support changes to voltage, frequency, performance, shaft, mounting interface, enclosure, thermal design, protection and connection arrangements where the equipment requires a tailored solution.
Learn MoreNEMA motor enquiry
Share Your Application Requirements
Provide the horsepower, speed, supply, efficiency requirement, frame or envelope, mounting, enclosure, environment and duty for an initial engineering review.