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Siemens 1LA91331BD91

Series: 1LA9

The photo shows the 1LA9 130–2KA10 from the same series. Source: kleinanzeigen.de

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The Siemens 1LA91331BD91 is a three-phase induction motor. The rated output is 15 kW. The motor is two-pole, which at 50 Hz gives a synchronous speed of 3,000 rpm. The rated voltage is 400 V. The housing is frame size 132 M in foot-mounted form. The protection class is IP55. The efficiency is 91.9 per cent at full load, 92.2 per cent at 75 per cent load and 91.9 per cent at half load. The motor weighs 66 kg. At full load it delivers 48 Nm. The mounting arrangement to IEC 60034-7 is B5. The motor is built in Germany. The values are recorded in the Australian MEPS registration under the GEMS Determination 2012; measured to IEC 60034-2-1 (Edition 2.0). Rated output across the Siemens range ranges from 0.75 to 200 kW; the 1LA91331BD91 sits at the bottom of that range with 15 kW. Its immediate neighbours are the 1AV2167B below it with 13.8 kW and the 1AV2204B above it with 18.2 kW. 569 Siemens models across 4 series are on record.

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: SpecCodex register, model data: Siemens 1LA9 (MEPS-Registrierungen), Siemens Niederspannungsmotoren (manufacturer)

Technical data

Engine

Engine familyElectric Motorscorrect
Engine familiesElectric Motorscorrect
Rated output15 kWcorrect

Dimensions and weights

Weight66 kgcorrect

Electrical data

Rated voltage400 Vcorrect
Number of poles2correct
Protection classIP55correct
Frame size132 M (foot)correct
Mounting (IEC 60034-7)B5correct
Efficiency at full load91.9 %correct
Efficiency at 75 % load92.2 %correct
Efficiency at half load91.9 %correct

Origin and approval

Country of manufactureGermanycorrect

Other data

Standard appliedGreenhouse and Energy Minimum Standards (Three Phase Electric Motors) Determination 2012correct
Test methodIEC 60034-2-1 (Edition 2.0)correct

Frequently asked questions

How much power does the Siemens 1LA91331BD91 have?

The Siemens 1LA91331BD91 delivers 15 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 28 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

1 LA9 209-2

1LA9

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

Sources: Energy Rating — Australian government equipment register (retrieved August 2026) · How we check the data

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