3.7 kW 4 pole three-phase motors

10 motors are registered for supply in Australia at 3.7 kW 4 pole, from 6 different brands. A 4 pole motor runs at a synchronous speed of 1,500 rpm on a 50 Hz supply. Registration means the motor may be supplied here. It is not a statement that it fits your application.

4 frame sizes · 15 recorded voltages · 31 mounting arrangements

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Frame sizes at this rating

IEC: 112M

The number is the shaft centre height in millimetres and the letter is the frame length. It fixes how high the shaft sits and where the foot holes are, so a 132M from one manufacturer mounts like a 132M from another.

NEMA: 184T, 184TC

A different, dimensionally unrelated frame system — the NEMA number is the shaft centre height in quarter inches, not millimetres. A NEMA frame is never a substitute for an IEC one.

Standard unclear: 182

Recorded in a form that does not place them confidently against either system — a NEMA-style suffix without the word NEMA, or a dual-frame designation such as 213/5T. Check the standard against the manufacturer's drawing before treating any of these as a centre height in millimetres.

Synchronous speed

1,500 rpm — 1500 rpm at 50 Hz, from 4 poles.

Full-load speed is lower than this by the motor's slip, and slip is not recorded in the register. Read it from the nameplate of the motor you are replacing.

Efficiency spread

Full-load efficiency across these registrations runs from 86.30% to 90.40%.

Over a motor's working life, running cost usually dwarfs purchase price, so this spread is worth more attention than it normally gets.

Every 3.7 kW 4 pole motor registered for supply in Australia, by brand. Enclosure and mounting are often recorded for a registration family rather than one model — see the note below the table.
Brand	Model	Frame	Enclosure	Full-load efficiency	Made in
BALDOR	06C101X875G3	184T	IP44	88.00%	United States of America
BALDOR	06J522X340G1	not stated	IP55	88.30%	United States of America
BALDOR	M36K190Q032G1	184TC	IP55	90.40%	United States of America
HD Hyundai Electric	HL-XE 112M	112M	IP55	86.30%	Vietnam
Ingersoll-Rand	FF112M-4-3.7	112M	IP55	89.82%	China
TECO	3.7kW-4 pole-D112M-AESV3S-AESU3S-AEEV3N-AEUV3N	112M	IP55, IP56, IP65, IP66	89.10%	China
Toshiba International	NEMAB5HP	112M	IP00, IP01, IP02, IP10, IP11, IP12, IP13, IP14, IP15, IP20, IP21, IP22, IP23, IP24, IP25, IP30, IP31, IP32, IP33, IP34, IP35, IP40, IP41, IP42, IP43, IP44, IP45, IP46, IP47, IP48, IP50, IP51, IP52, IP53, IP54, IP55, IP56, IP57, IP58, IP65, IP66	89.00%	Taiwan, China, United States of America
WEG	3.7kW 4P 112 W22 IE3	112M	IP55	87.87%	Brazil
WEG	3.7kW 4P 182/4 W22 IE2	182	IP56	88.42%	Brazil, China
WEG	3.7kW 4P 182/4T 415V 50Hz NEMA W22 IE3 (Incl. W22M, Ex-db, Ex-db eb, Ex-eb, Ex-ec, Ex-tb, Ex-tc)	182	IP55	88.94%	China, Brazil

What this page establishes, and what it does not

Established: every motor listed is registered for supply in Australia at 3.7 kW 4 pole, and the frame, enclosure and efficiency shown are what its registration states.
Established: a 4 pole motor has a synchronous speed of 1,500 rpm at 50 Hz. That is arithmetic, not a measurement.
Read carefully: a registration often covers a family of motors rather than one part number. 3 of these registrations list several voltages and 4 list several mounting arrangements — meaning a compliant variant exists in that family, not that the model shown is that variant.
Not established: that any motor here bolts into your application. Shaft diameter, shaft length and keyway are not in the register, and neither is terminal box position.
Not established: that a motor is currently available, or at what price. The register records permission to supply, not stock.
Not in this dataset: full-load speed, starting current, duty rating, and suitability for inverter operation.

Replacing a motor?

What each figure on the nameplate means, which of them decide whether a replacement fits, and which you have to confirm off the drawing.

Read the guide →

Match against your specification

Add voltage, frame, mounting and enclosure to narrow these 10 registrations to the ones that meet your requirement.

Open the finder →

Known limitations

What the register omits, where family registrations blur model detail, and the checks you always have to make yourself.

Understand the gaps →