Rotek RX 7.5 Kw 3 Phase 2 Pole
Series: RX
Not the right version? The data comes from vehicle registers holding many near-identical versions side by side. Photograph the data plate — we read make and type from it. Open the scanner e-mail address required
Rotek RX – register of three-phase induction motors: output and pole count spelt out in the model name, frame sizes 132 to 315, 3 to 160 kW, 2- to 8-pole, IP55, 400 V, made in China
The RX range covers the three-phase induction motors Rotek registers on the Australian energy-efficiency register (GEMS/MEPS). The model name itself carries the key technical data: RX is followed directly by the rated output in kilowatts and the pole count, for example RX 18.5 Kw 3 Phase 4 Pole Motor for a four-pole 18.5 kW motor or RX 110 Kw 3 Phase 2 Pole Motor for the two-pole 110 kW version. Every model name therefore immediately shows what the motor is designed for, without needing a separate type key.
Read on 3 more paragraphs
The register lists here 32 versions with 3 to 160 kW, two- to eight-pole, at a uniform mains voltage of 400 V. Full-load efficiencies range from 84.53 to 95.7% and at 75% load from 84.53 to 95.8%. Frame sizes run from 132 to 315 under IEC, all motors are recorded with protection rating IP55 and mounting code B3 (foot mount); manufacturing is exclusively in China, tested to AS/NZS 1359.5:2004 with test method B.
With this closed power band from a few kilowatts up to 160 kW, RX covers the classic range of IEC standard motors for pumps, fans, compressors and conveyors, offered in the Australian and New Zealand industrial market alongside established brands as a lower-cost alternative. The consistent B3 foot mount and uniform IP55 rating make the range a standard replacement motor for existing installations, without needing to check mounting dimensions or protection class.
When buying used, what matters is bearing condition and a checked insulation resistance of the winding, visible overheating marks on the terminal box and fan cover, and a legible nameplate with frame size, pole count and efficiency figure; anyone wanting to run the motor on a variable-speed drive should first check its suitability for speed control. Spares for the IP55 foot-mounted motors are usually available independent of manufacturer thanks to the IEC standard frame.
Sources: SpecCodex register, model data: Rotek RX
Technical data
Engine
| Rated output | 7.5 kWcorrect |
|---|
Electrical data
| Rated voltage | 400 Vcorrect |
|---|---|
| Number of poles | 2correct |
| Protection class | IP55correct |
| Frame size | 132 S (foot)correct |
| Mounting (IEC 60034-7) | B3correct |
| Efficiency at full load | 89.5 %correct |
| Efficiency at 75 % load | 89.5 %correct |
| Efficiency at half load | 86.5 %correct |
Origin and approval
| Country of manufacture | Chinacorrect |
|---|
Other data
| Standard applied | AS/NZS 1359.5:2004correct |
|---|---|
| Test method | AS 1359.102.1:1997correct |
Frequently asked questions
How much power does the Rotek RX 7.5 Kw 3 Phase 2 Pole have?
The Rotek RX 7.5 Kw 3 Phase 2 Pole delivers 7.5 kW.
What to check before buying
- Match the data plate against the order: frame size, mounting and rating have to agree.
- Check the ingress rating against the installation site — outdoors or in dust the demands differ.
- Hold the mounting form and dimensions against the existing seat before ordering.
- The pole count sets the speed — when replacing an older unit, compare this first.
- For used units, ask about winding condition and bearing play.
- Ask about parts availability for this series — the running costs hang on it.
A general list for this type of machine — no substitute for an inspection or an appraiser.
We do not sell machines. We ask the dealers who carry this model and come back with price and lead time.
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This page carries 23 individual figures for this model. They come from 1 recorded source; every figure can be traced there. What we cannot document is not here — we leave gaps open rather than estimate them.
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Other models in this series
RX 11 Kw 3 Phase 2 Pole Motor
RX 11 Kw 3 Phase 6 Pole Motor
RX 110 Kw 3 Phase 2 Pole Motor
RX 132 Kw 3 Phase 4 Pole Motor
RX 15 Kw 3 Phase 4 Pole Motor
RX 15 Kw 3 Phase 8 Pole Motor
RX 15 Kw 3 pHase 2 Pole Motor
RX 160 Kw 3 Phase 4 Pole Motor
RX 18.5 Kw 3 Phase 2 Pole Motor
RX 18.5 Kw 3 Phase 4 Pole Motor
RX 18.5 Kw 3 Phase 8 Pole Motor
RX 22 Kw 3 Phase 2 Pole Motor
Sources: Energy Rating — Australian government equipment register (retrieved August 2026) · How we check the data
Electric motor in 3D section
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