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The numerous available options enable standard motors from Siemens to be used in every area of industry and every sector. They are suitable both for special environmental conditions such as those that predominate in the chemical or petrochemical industry as well as for most climatic requirements such as those of offshore applications. Their large range of line voltages enables them to be used all over the world.

The wide field of implementation includes the following applications:

  • Pumps
  • Fans
  • Compressors
  • Conveyor systems such as cranes, belts and lifting gear
  • High-bay warehouses
  • Packaging machines
  • Automation and drives


Standard motors from Siemens are characterized by their flexibility, ruggedness and energy efficiency. In general, all motors are suitable for converter-fed operation with line voltages of up to 460 V +10 %. The motors are designed to fulfill the requirements of the European and international markets with an output range from 0.09 to 315 kW.

Standard motors for use worldwide

IEC motors for the European and international market

The standard motors comply both electrically and mechanically with the applicable IEC/EN standards. For exporting to China, CCC certified motors (China Compulsory Certification) can be supplied.

IEC motors specially for the North American market

Motors are also available to the NEMA specification (National Electrical Manufacturers Association), with UL approval (Underwriters Laboratories Inc.) and CSA certification (Canadian Standard Association) for exporting to NAFTA states (USA, Canada and Mexico). The mechanical design of all motors is compliant only to IEC/EN, not to NEMA dimensions.

NEMA motors for the North American market

For further information about NEMA motors according to NEMA standard MG1: http://www.sea.siemens.com/motors

High efficiency energy-saving motors for a positive energy balance

Depending on requirements, energy-saving motors for a positive energy balance are available that are compliant with the legal requirements applicable in the European economic area in accordance with EU Directive 640/2009 as well as for the North American market in accordance with US federal law EISA (Energy Independence Security Act).

Minimum efficiency according to EU Directive 640/2009

The EU Directive defines the minimum efficiency for 2, 4 and 6-pole motors in the output range from 0.75 to 375 kW. The efficiency levels are grouped into 3 efficiency classes (IE = International Efficiency):

  • IE1 (Standard Efficiency)
  • IE2 (High Efficiency)
  • IE3 (Premium Efficiency)

IE1, IE2 and IE3 efficiencies, 4-pole 50 Hz

At a glance: EU Directive No. 640/2009 based on IEC 60034-30
  • The EU Directive is in force in all countries of the European Union. Losses are determined and therefore the efficiency is determined in accordance with IEC 60034-2-1:2007
  • The following are specified: 2, 4, 6-pole 50/60 Hz squirrelcage motors from 0.75 to 375 kW, for all voltages < 1000 V

Further information at: http://www.siemens.com/international-efficiency

Efficiency requirements according to EISA

The Energy Policy Act (EPAct) was superseded in December 2010 by the Energy Independence Security Act (EISA).

Since then, EISA has extended the legal minimum efficiency requirements.

The following motors must satisfy the NEMA Premium Efficient Level (NEMA MG Table 12-12):

  • 1 to 200 hp
  • 2, 4, 6-pole
  • 230 V, 460 V

Exception/expansion – The following motors must comply with the NEMA Energy Efficient Level (NEMA MG Table 12-11):

  • 201 to 500 hp
  • 2-pole, 4-pole, 6-pole and 8-pole
  • All voltages < 600 V except 230 V and 460 V
  • Footless motors (IM B5 and other flange types)
  • NEMA design C (increased starting torque)

For details, see NEMA MG1, Table 12-11 and Table 12-12.

The EISA act lays down that the nominal efficiency at full load and a "CC" number (Compliance Certification) must be included on the rating plate. The "CC" number is issued by the US Department of Energy (DOE). The following information is stamped on the rating plate of EISA motors which must be marked by law:

  • Nominal efficiency
  • Design Letter
  • Code Letter
  • CONT
  • CC No. CC 032A (Siemens) and NEMA MG1-12
Energy-saving motors from Siemens in accordance with IEC 60034-30 or EISA

The product range of energy-saving motors exclusively comprises motors in the EU efficiency classes IE1 "Standard Efficiency", IE2 "High Efficiency", and IE3 "Premium Efficiency". The procedure for determining the efficiency is based on IEC 60034-2-1:2007. With these energy-saving motors, a significant reduction in energy costs can be achieved.

IEC motors from Siemens for the North American market are CC certified and stamped with the number CC032A on the rating plate. Motors are offered with the CSA Energy Efficiency Verification Mark specially for the Canadian market.

Example of a rating plate

IE3 double rating plate

For further examples, see Part 0.1 of Catalog D 81.1  2012.

Standard motors with increased output and compact construction

Standard motors with increased output and compact construction can be used to advantage in confined spaces. For a slightly longer overall length, the output is at least as high as that of the next largest shaft height. These compact motors are also optimized for efficiency and therefore reduce the operating costs.

Standard motors with reduced output without external fan

Naturally cooled motors with surface cooling without external fan are suitable for the following operating conditions:

  • Types of duty with adequate cooling times (e.g. temporary duty for positioning drives)
  • Environmental conditions that demand compact installation space (e.g. in motors with a stopping function)
  • Conditions which make an external fan disadvantageous (e.g. simple cleaning in the food industry, textile industry).
Preferred and Express motors

The most popular basic versions of motor series 1LA9 and 1LG6, and the corresponding successor types 1LE1001 and 1LE1501 are available under special terms as so-called "Preferred motors". Most of the "Preferred motors" are also available with a shorter delivery time as so-called "Express motors".

The standard delivery time for Express motors is 1 to 2 days from the time of clarification of the order at the factory until dispatch from the factory. To determine the delivery date at the customer site, the appropriate shipping time must be added.

For further information and the complete range, see "Preferred and Express motors".

Spectrum of SIMOTICS SD 1LA/1LG/1LP/1PP Standard motors – Standard degree of protection IP55; optionally IP56 or IP65

Motor version

Motor type

Motor type – Frame size – Rated output at 50 Hz (values in kW) or 60 Hz (values in hp)














315 S/M/L

315 L
1LG6 318-.M,

1LG6 312-.M 1)





IE2 High Efficiency


1LG6 1) – 11 … 315 kW

IE3 Premium Efficiency


1LG6 1) – 75 … 315 kW

IE1 Standard Efficiency


1LA6 – 0.75 … 18.5 kW

1LG4 – 11 … 200 kW


1PP4 – 11 … 200 kW


1LP4 – 3,7 … 67 kW

NEMA Energy Efficient


1LG6 – 15 … 315 kW / 20 … 400 hp

NEMA Premium Efficient


1LG6 1)
200 … 315 kW /
250 … 400 hp



1LG4 – 4.5 … 175 kW

For converter-fed operation only


1LG6 – 11 … 200 kW

1) Order identically priced predecessor type for 1LG6...2AA../1LG6...2AB.. 2-pole motors or 1LG6...4AA.. 4-pole motors using the options for country certificates, marine certificates, explosion-proof version and IE3 version. For 1LG6318-.M.. and 1LG6312-. M.. motors, it is not possible to use the options for country certificates, marine certificates, explosion-proof version, brakes, brakes with encoder, low-noise versions and mounting of a separately driven fan, separately driven fan.


Standard motors from Siemens offer the user numerous advantages:

  • The motors are approved and certified for worldwide use and meet high quality standards (confirmed, for example, by CSA 1), UL 2), EXAM 3), PTB 4), CQC 5))
  • The ruggedness and lack of complexity of the components guarantee an extremely long service life
  • Complete product spectrum for energy-saving motors in accordance with IEC 60034-30
  • Extremely easy selection of energy-saving motors due to the efficiency classification (IE1/IE2/IE3)
  • Reduction in operating costs thanks to high degrees of efficiency with IE2/IE3
  • Higher motor service life thanks to lower winding temperature in IE2/IE3 motors with rated load and supply
  • Reduced environmental impact due to CO2 reduction
  • High overload reserves under continuous duty (SF 1.15 for motor series 1LA9/1LG6)
  • Suitable for universal applications worldwide
  • Standard motors with increased output and extremely compact construction
  • Shorter delivery times with Express motors
  • The module mounting concept supports rapid modification by the customer
  • A fast and comprehensive service is provided by factories and modification partners distributed throughout the world

1) Canadian Standard Association

2) Underwriters Laboratories Inc.

3) EXAM BBG Prüf und Zertifier GmbH (previously BVS = Bergbau Versuchsstrecke)

4) Physikalisch-Technische Bundesanstalt

5) China Quality Certification

Технические данные

Overview of technical specifications

This table lists the most important technical data. For more information and details, see Catalog D 81.1 · 2008 Part 0 "Introduction".

Type of motor

SIMOTICS GP/SD 1LA/1LG/1LP/1PP IEC Low-Voltage Motors

Connection types

Star connection/delta connection

You can establish the connection type to be used from the Order No. supplements for the required motor.

Number of poles

2, 4, 6, 8, pole-changing for constant and square-law load torque

Rated speed
(synchronous speed)

750 ... 3000 rpm

Rated output

0.09 ... 315 kW

Rated torque

0.25 ... 1700 Nm

Insulation of the stator winding according to EN 60034-1 (IEC 60034-1)

Temperature class 155 (F), used according to temperature class 130 (B) DURIGNIT IR 2000 insulation system

Degree of protection
according to EN 60034-5 (IEC 60034-5)

IP55 as standard

according to EN 60034-6 (IEC 60034-6)

  • Self-ventilated (1LA, 1LG motor series) frame sizes 63 to 315 (IC 411)
  • Naturally cooled (motor series 1LP) frame sizes 63 to 315 (IC 410)

Admissible coolant temperature and site altitude

–20 ... +40 °C as standard, site altitude up to 1000 m above sea level

See "Coolant temperature and site altitude" in Catalog D 81.1 · 2008 Part 0 "Introduction".

Standard voltages
according to EN 60038 (IEC 60038)

50 Hz: 230 V, 400 V, 500 V, 690 V
The voltage to be used can be found in the "Selection and ordering data" for the required motor.

Type of construction
according to EN 60034-7 (IEC 60034-7)

  • Without flange: IM B3, IM B6, IM B7, IM B8, IM V5 without protective cover, IM V6, IM V5 with protective cover
  • With flange: IM B5, IM V1 without protective cover, IM V1 with protective cover, IM V3, IM B35
  • With standard flange: IM B14, IM V19, IM V18 without protective cover, IM V18 with protective cover, IM B34
  • With special flange: IM B14, IM V19, IM V18 without protective cover, IM V18 with protective cover, IM B34

Paint finish
Suitability of paint finish for climate group according to IEC 60721, Teil 2-1

Standard: Color RAL 7030 stone gray

Climate group "worldwide" with special finish
Climate group "moderate" with standard finish

See "Paint finish" in Catalog D 81.1 · 2008 Part 0 "Introduction".

Vibration severity level
according to EN 60034-14 (IEC 60034-14)

Level A (normal, without special vibration requirements)
Level B (with special vibration requirements)
See "Balance and vibration quantity" in Catalog D 81.1 · 2008 Part 0 "Introduction".

Shaft extension
according to DIN 748 (IEC 60072)

Balance type: Half-key balancing
See "Balance and vibration quantity" in Catalog D 81.1 · 2008 Part 0 "Introduction".

Sound pressure level
according to DIN EN ISO 1680
(tolerance +3 dB)

The corresponding sound pressure level is listed in the selection and ordering data for the required motor.


The corresponding weight is listed in the selection and ordering data for the required motor.

Mechanical limit speeds

The corresponding limit speed for the required motor is listed in the table “Mechanical limit speeds nmax at maximum supply frequency fmax“.

Packaging weights and dimensions

See "Packaging weights and packaging dimensions" in Catalog D 81.1 · 2008 Part 0 "Introduction".

Rating plates

Fixed to the motor See "Examples of rating plate" in Catalog D 81.1 · 2008 Part 0 "Introduction".

Connection and connection box

See "Connection, circuit and connection boxes" in Catalog D 81.1 · 2008 Part 0 "Introduction".

Bearing designs

"Bearings" in Catalog D 81.1 · 2008 Part 0 "Introduction".

Cantilever forces

See "Admissible cantilever forces" in Catalog D 81.1 · 2008 Part 0 "Introduction".


See "Supplements to order numbers and special versions".

General note

All the data listed in the catalog is applicable for a 50 Hz line supply. With converter-fed operation, the reduction factors for constant torque and drives for fans, pumps and compressors must be observed. Noise values for motors operating with a converter at frequencies other than 50 Hz are available on request.

Mechanical limit speeds

When the motor is operated at its rated frequency, it is important to note that the maximum speeds are limited by the limits for the roller bearings, critical rotor speed and rigidity of the rotating parts.

Ventilation/noise generation (converter-fed operation)

The fan noise can increase at speeds that are higher than the rated speed of self-ventilated motors. To increase motor utilization at low speeds it is recommended that forced-ventilated motors are used.

Mechanical stress and grease lifetime (converter-fed operation)

High speeds that exceed the rated speed and the resulting increased vibrations alter the mechanical running smoothness and the bearings are subjected to increased mechanical stress. This reduces the grease lifetime and the bearing lifetime. More detailed information on request.