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Siemens 1LA9

Series: 1LA9

Source: https://press.siemens.com/at/de/pressemitteilung/siemens-ste

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The Siemens 1LA9 is a three-phase induction motor. The rated output is 7.5 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 132 M in foot-mounted form. The protection class is IP55. The efficiency is 90.3 per cent at full load, 90.5 per cent at 75 per cent load and 89 per cent at half load. The motor weighs 60 kg. At full load it delivers 49 Nm. The mounting arrangement to IEC 60034-7 is V18. The motor is built in Germany. The data is based on the Australian MEPS registration under standard AS/NZS 1359.5:2000 (Legacy); measured to IEEE 112-B(USA). Rated output across the Siemens range ranges from 0.75 to 200 kW; the 1LA9 sits at the bottom of that range with 7.5 kW. Its immediate neighbours are the 7.6807.0 below it with 5.5 kW and the 1PC30051BA500UA0 above it with 9 kW. 570 Siemens models across 2 series are on record. The model is listed under Electric motors. 25 verified figures from 1 source are on file.

Siemens 1LA9 – aluminium standard motors in frame sizes 80 to 200: 1.1 to 37 kW, type code 1LA9 xxx-xKAxx

1LA9 is the aluminium series from Siemens' 1LA family – the standard motor of the small and medium frame sizes for pumps, fans, compressors and general machine building, listed for years in every catalogue and fitted in many OEM machines. The type code follows Siemens' order-number logic: 1LA for the aluminium family, the 9 for the execution with increased output per frame size, then the three-digit number for frame size and length (083 = frame 80, 090/096 = 90, 106/107 = 100, 113/114 = 112, 130/131/133 = 132, 163/164/166 = 160, 183/186 = 180, 206/207 = 200), the digit after the hyphen for the number of poles, KA for the winding, and the final positions for mounting and options.

Read on 3 more paragraphs

The register lists 60 versions from frame size 80 to 200 with rated outputs from 1.1 to 37 kW, two-, four- and six-pole, rated voltage 415 V. Full-load efficiencies lie between 82 and 94 %, protection is IP55 throughout, mounting IM B3 or IM B5. The recorded weights of 12 to 214 kg show the lightweight construction: a 1LA9 in frame 132 weighs clearly less than a cast-iron motor of the same output. Manufacturing locations per registration: Czechia and Germany.

The special feature of the 9 execution is the higher output utilisation: in many frame sizes the 1LA9 delivers one power step more than the base type 1LA7 at the same shaft height – an advantage when the installation space is fixed.

When replacing, interchangeability via shaft height, flange and shaft end applies as with all IEC motors; the efficiency class of the 1LA9 is mostly IE1 or IE2, and the successor 1LE1 in IE3 usually has the same connection dimensions.

Sources: Kennwerte der Modelle Siemens 1LA9 (MEPS-Registrierungen), Siemens Niederspannungsmotoren (Hersteller)

Technical data

Engine

Rated output7.5 kWcorrect

Dimensions and weights

Weight60 kgcorrect

Electrical data

Rated voltage415 Vcorrect
Number of poles4correct
Protection classIP55correct
Frame size132 M (foot)correct
Mounting (IEC 60034-7)V18correct
Efficiency at full load90.3 %correct
Efficiency at 75 % load90.5 %correct
Efficiency at half load89 %correct

Origin and approval

Country of manufactureGermanycorrect

Other data

Standard appliedAS/NZS 1359.5:2000 (Legacy)correct
Test methodIEEE 112-B(USA)correct

Frequently asked questions

How much power does the Siemens 1LA9 have?

The Siemens 1LA9 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.

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This page carries 25 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

1LA9 083–2KA..

1LA9 083–2KA10

1LA9 090–2KA..

1LA9 090–2KA10

1LA9 090–4KA..

1LA9 090–4KA10

1LA9 096–2KA..

1LA9 096–2KA10

1LA9 096–4KA..

1LA9 096–4KA10

1LA9 096–6KA..

1LA9 096–6KA10

Sources: [1]

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