What documentation is available?

NEMA Standard

NEMA PE

NEMA Premium Efficiency Three-Phase Induction Motor (Design B)

Built to the NEMA standard — ANSI/NEMA MG 00001, the publication long known as MG 1 — for the North American market: frames 143T through 586/7T, 60 Hz, at NEMA Premium efficiency.

NEMA MG 1Design B60 Hz

Request a Quote Download Datasheet

NEMA Premium efficiency three-phase induction motor

A single-speed, totally enclosed fan-cooled, continuous-duty low-voltage squirrel-cage induction motor designed and built to the American NEMA standard, Design B. NEMA classifies polyphase motors by torque and slip as Design A, B, BE, C, CE and D; this series covers the A and B designs, while high-slip oil-well pump duty is served by the separate NEMA D series.

Mounting arrangements are the NEMA equivalents of the IEC forms: T (B3), TC (B34), TD (B35) and TCRD/TDRD (V18 or V1). Shaft extensions are T (standard) or TS (short); frames 250T and above are supplied with grease inlet and drain.

For the 100–250 HP band LEADGO also builds the SPE variant of this series at IE4 efficiency, in frames 405T to 586/7T, developed for the United States requirement that motors in that power band reach IE4 from June 2027. The 2024 edition of the NEMA standard added a Super Premium efficiency level of its own, in clause 12.62 and Table 12-23, which is the North American reference point for this variant. SPE is an efficiency upgrade within this product line, not a separate series — it shares the frame and mounting dimensions.

Core specifications

Parameter	Value
Frame size	NEMA T-frames 143T – 586/7T
Power range	Up to 350 HP (260 kW)
Design	NEMA Design B (A designs also built)
Efficiency	NEMA Premium · SPE variant at IE4 for 100–250 HP
Voltage	230/460 V · 460 V · 575 V
Frequency	60 Hz
Service factor	1.0 / 1.15 / 1.25
Protection degree	IP54 (IP55)
Insulation class	Class F
Mounting	T (B3) · TC (B34) · TD (B35) · TCRD / TDRD (V18 or V1)
Ambient / altitude	−15 to 40 °C · up to 3,300 ft
Certification	CSA Master Contract 259277 — safety 70058439, hazardous location 70181418
Hazardous location	Class I, Division 2, Groups A, B, C, D · T3A / T3C / T3
Efficiency verification	CSA C390-10 · US DOE 10 CFR Part 431, Subpart B

Standards and certification

ANSI/NEMA MG 00001 (MG 1)
CSA Master Contract 259277
CSA C390-10
10 CFR Part 431, Subpart B

Typical applications

General machinery drives across the North American market
Any specification written to NEMA frame and 60 Hz supply
The 100–250 HP band facing the 2027 US IE4 requirement (SPE variant)

Selection guide

Motors carrying the CSA certification number are built at 230/460 V, 460 V or 575 V, all at 60 Hz. Other voltages can be built but fall outside that certification.

A motor supplied with a terminal board cannot carry the CSA mark unless it is separately CSA-certified with the board fitted. Frame 440 and above requires a shaft grounding ring before a variable-frequency nameplate can be applied. Tell us the site requirement and we will confirm what the nameplate can state.

From 1 June 2027 motors rated 100–250 HP must meet IE4 to enter the United States. The SPE variant of this series covers that band in frames 405T to 586/7T and shares mounting dimensions with the standard PE frames.

FAQ

Datasheets, dimension drawings and certification copies are issued on request — tell us the rating and we will send the documents for that specific model.

Downloads

DatasheetPDF · 1.4 MBDownload

Installation & maintenance manualInstallation, commissioning and servicingRequest

CertificationCertificates and test reportsRequest

Certificates and test reports are issued against the specific model and rating rather than the series, so we send the ones that apply to your order. Tell us the rating and the market and we will send them.