ABB Baldor-Reliance General Purpose Motors

Single and three phase NEMA motors, totally enclosed or open, including Super-E® NEMA Premium® models

Up to NEMA 449T Frame / 400 HP / 2, 4, 6, 8 Pole

ABB Baldor-Reliance general purpose motors are the everyday AC motors in the ABB Baldor-Reliance NEMA range, built for fans, pumps, conveyors, compressors and general machinery. Single phase models run from 1/12 to 15 HP and three phase models from 1/8 to 400 HP, in foot-mounted and C-face designs.

About ABB Baldor-Reliance general purpose motors

Baldor-Reliance general purpose motors are built in ABB’s US manufacturing facilities and are listed in the Baldor-Reliance 501 stock catalogue. They suit applications that don’t need hazardous location certification or a heavily customised design, and are designed for a long service life with little maintenance.

The range splits by supply and by enclosure:

Single phase: 1/12 to 15 HP. For sites or machines with only a single phase supply. Totally enclosed fan cooled (TEFC) models cover 1/12 to 15 HP in NEMA frames 42 to 256T; open drip proof (ODP) models cover 1/6 to 10 HP. Both come foot mounted or C-face.
Three phase, totally enclosed: 1/8 to 400 HP. The core of the range, in NEMA frames 42 to 449T with 2, 4, 6 and 8 pole speeds. Super-E® models deliver NEMA Premium® efficiency, and C-face versions run from 1/4 to 100 HP.
Three phase, open: 1/4 to 450 HP. Steel band open designs for clean, dry, indoor locations, in frames 48 to 449T.

Choose a totally enclosed motor where the motor is exposed to dust, moisture or washdown spray, and an open motor where the air is clean. For corrosive or heavily contaminated plant, a severe duty motor is the better fit; for hygienic food production, a washdown duty motor. Where efficiency beyond NEMA Premium® is required, see the SP4 Super Premium motors.

ABB Baldor-Reliance general purpose motor features and benefits

1/12 to 400 HP in NEMA frames 42 to 449T. Single phase to 15 HP, three phase to 400 HP totally enclosed (450 HP open).
Super-E® NEMA Premium® efficiency. Three phase Super-E models meet NEMA Premium® efficiency, and the range meets or exceeds US, Canadian and Mexican efficiency requirements.
Totally enclosed or open. TEFC for dust and moisture (IP44 standard, IP54 with drain fittings on 48-256T frames); open designs at IP22 for clean environments.
Cast iron or heavy gauge steel frames. Heavy gauge steel as standard, with cast iron frames on selected ratings.
Class F insulation, Class B temperature rise. Thermal headroom for higher ambient temperatures, overloads and voltage variation; 1.15 service factor on most ratings.
Suitable for inverter use. Three phase motors are rated for inverter duty to NEMA MG1 Part 31, for use with a variable speed drive.
Foot-mounted and C-face designs. C-face models have a locked drive-end bearing, so they can be mounted in any orientation.
50 Hz nameplate data. Super-E® three phase motors carry 50 Hz ratings on 2, 4 and 6 pole designs from 1 to 125 HP.
Manufacturer’s warranty. 36 months from manufacture on Super-E® motors; 18 months on other general purpose motors.

ABB Baldor-Reliance general purpose motor specifications

Specification	Single phase	Three phase
Standard	NEMA MG1	NEMA MG1
Power range	1/12-15 HP (TEFC); 1/6-10 HP (ODP)	1/8-400 HP (totally enclosed); 1/4-450 HP (open)
NEMA frame sizes	42-256T	42-449T (totally enclosed); 48-449T (open)
Poles / speed (60 Hz)	2, 4, 6 pole (3600, 1800, 1200 rpm)	2, 4, 6, 8 pole (3600, 1800, 1200, 900 rpm)
Voltage (60 Hz)	115/230 V, 115/208-230 V	200 V, 230/460 V, 460 V, 575 V; 2300/4000 V available
50 Hz data	See datasheet	On Super-E® nameplates, 2, 4 and 6 pole, 1-125 HP
Enclosure	TEFC or ODP	Totally enclosed (TEFC, some TENV) or open
Ingress protection	IP44 (TEFC); IP22 (ODP)	IP44 standard (IP54 with drain fittings, 48-256T); IP22 (open)
Frame material	Heavy gauge steel; cast iron on selected ratings	Heavy gauge steel; cast iron on selected ratings
Mounting	Foot mounted; C-face foot mounted; C-face footless	Foot mounted; C-face foot mounted (1/4-100 HP); C-face footless (1/4-30 HP)
Efficiency	Meets or exceeds US, Canadian and Mexican requirements	Super-E®: NEMA Premium®
Insulation	Class F, Class B rise	Class F, Class B rise at 1.0 SF
Service factor	See datasheet	1.15 on most ratings
Inverter duty	Not listed as inverter duty	NEMA MG1 Part 31
Bearings	Ball bearings	Ball bearings; roller bearings (-TR suffix) on selected ratings
Manufacturer's warranty	18 months from manufacture	36 months (Super-E®); 18 months (other models)

Downloads

For technical information, brochures and further product details, visit our downloads page.

ABB Baldor-Reliance general purpose motor FAQs

What is a general purpose motor?

A general purpose motor is a standard AC induction motor built to NEMA dimensions and performance ratings for everyday industrial duty: fans, pumps, conveyors, compressors and machine tools. It is designed for normal operating conditions rather than a specific hazard. Motors for corrosive plant, hygienic washdown or hazardous areas are built differently, as severe duty, washdown duty or explosion proof motors.

Should I choose a single phase or three phase motor?

It depends on the supply. Single phase motors run where only a single phase supply is available, typically up to 15 HP in this range. Three phase motors cover 1/8 to 400 HP, run more efficiently, and can be speed-controlled with a variable speed drive. If a three phase supply is available, a three phase motor is usually the better choice.

What is the difference between TEFC and ODP motors?

A totally enclosed fan cooled (TEFC) motor is sealed against the surrounding air and cooled by an external fan, so it suits dusty, damp or outdoor locations. An open drip proof (ODP) motor draws air through the windings to cool them. It gives more output in a smaller frame but should only be used in clean, dry, indoor locations.

What is a Baldor-Reliance Super-E® motor?

Super-E® is Baldor-Reliance’s name for its NEMA Premium® efficiency motors. In the general purpose range, Super-E® three phase motors combine NEMA Premium® efficiency with inverter duty capability and a 36-month manufacturer’s warranty. For higher efficiency still, the SP4 Super Premium range meets NEMA Super Premium® levels.

What is the difference between ABB and ABB Baldor-Reliance general purpose motors?

Both are ABB NEMA motors. ABB Baldor-Reliance general purpose motors come from Baldor Electric Company, acquired by ABB in 2011, and cover single and three phase from 1/12 to 400 HP. The ABB-branded GP100 and GP100A are three phase TEFC motors from the NEMA motor business ABB acquired in 2023. See ABB NEMA general purpose motors for that range.

Will a Baldor-Reliance general purpose motor run on a UK 50 Hz supply?

These are 60 Hz designs. Super-E® three phase motors carry 50 Hz ratings on the nameplate for 2, 4 and 6 pole motors from 1 to 125 HP. At 50 Hz, speed, output and voltage differ from the 60 Hz rating, so check the datasheet for the specific motor and supply.

Are brake motor versions available?

Yes. Baldor-Reliance builds brake motor versions of its general purpose motors. Contact us with the horsepower, frame, voltage and braking torque required.

How do I find a replacement for an existing Baldor motor?

Start with the motor nameplate. The catalogue number or spec number, horsepower, speed, frame, voltage, enclosure and mounting are usually enough to identify the current ABB Baldor-Reliance equivalent. Our guide to reading a NEMA motor nameplate explains each field.

Need a price on an ABB Baldor-Reliance general purpose motor?

Send us the catalogue number from the motor nameplate, or the horsepower, speed, frame, voltage and hazardous area classification (Class/Division or ATEX zone, gas group and temperature class), for a quote. Call 01924 411921 or email sales@betech.co.uk.