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Siemens 1LA

Series: Other models

The Siemens 1LA is a three-phase induction motor. The rated output is 1.5 kW. The motor is four-pole, which at 50 Hz gives a synchronous speed of 1,500 rpm. The rated voltage is 415 V. The housing is frame size 90. The protection class is IP55. The efficiency is 78.6 per cent at full load, 79.1 per cent at 75 per cent load and 76.1 per cent at half load. The motor weighs 15.6 kg. At full load it delivers 10 Nm. Mounting arrangements to IEC 60034-7: B3, B5, B35, B14 and B34. The motor is built in Czechia. The data is based on the Australian MEPS registration under standard AS/NZS 1359.5:2000 (Legacy); measured to IEC 60034-2-1 (Edition 2.0). Rated output across the Siemens range ranges from 0.75 to 200 kW; the 1LA sits at the bottom of that range with 1.5 kW. Its immediate neighbours are the 1LA9 096–6KA10 below it with 1.1 kW and the 1AV3094A above it with 2.2 kW. 570 Siemens models across 2 series are on record. The model is listed under Electric motors. 24 verified figures from 1 source are on file.

Siemens – other models: the collective page of MEPS-registered IEC low-voltage motors outside the named ranges, manufactured in Germany and Czechia, frame sizes 80 to 315, 0.75 to 160 kW

This page gathers the Siemens three-phase motors the Australian energy-efficiency register could not assign to a named range. Siemens traditionally builds its low-voltage standard motors at plants in Germany and Czechia; the large-motors and drives business spun off on 1 October 2024 has since traded as Innomotics. The type logic of the recognisable motor families runs from the classic 1LA range – Siemens' long-standing standard low-voltage motor – through the successor 1LE1 range introduced around 2011 to the special versions marked 1PC and 1PP, whose exact classification cannot be reliably reconstructed from the dump.

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The register lists here 416 versions with 0.75 to 160 kW, two- to eight-pole, full-load efficiencies from 78.6 to 96.6% and at 75% load (407 motors) from 79.1 to 96.8%. Frame sizes run from 80 to 315, protection is almost exclusively IP55; Czechia (172) and Germany (154) are represented almost equally as manufacturing countries, plus combinations of both. Testing mostly followed the 2019 (254) and 2012 (94) GEMS determinations and AS/NZS 1359.5, with test method A for the majority; of 400 classified motors, 297 reach the 2005 High Efficiency Level (roughly IE2) and 23 the 2018 level (roughly IE3), 78 remain unclassified.

Siemens is one of the world's leading makers of industrial motors; the versions gathered here supplement the named IEC ranges with older frame sizes, special versions and explosion-protection variants for pumps, fans, compressors and conveying plant in the process industries.

When buying used, bearing condition and a checked insulation resistance of the winding, the condition of shaft, key and fan cover, a legible nameplate with range (1LA, 1LE1, 1PC, 1PP), frame size and efficiency class matter, and on the older 1LA models inverter suitability, which is not given on every version. Spares and service run, depending on year, through Siemens or, since 2024, the responsible Innomotics.

Sources: Kennwerte der Modelle Siemens (weitere Modelle, MEPS-Registrierungen), Siemens (Hersteller)

Technical data

Engine

Rated output1.5 kWcorrect

Dimensions and weights

Weight15.6 kgcorrect

Electrical data

Rated voltage415 Vcorrect
Number of poles4correct
Protection classIP55correct
Frame size90correct
Mounting (IEC 60034-7)B3, B5, B35, B14, B34correct
Efficiency at full load78.6 %correct
Efficiency at 75 % load79.1 %correct
Efficiency at half load76.1 %correct

Origin and approval

Country of manufactureCzechiacorrect

Other data

Standard appliedAS/NZS 1359.5:2000 (Legacy)correct
Test methodIEC 60034-2-1 (Edition 2.0)correct

Frequently asked questions

How much power does the Siemens 1LA have?

The Siemens 1LA delivers 1.5 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.

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This page carries 24 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

Sources: [1]

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