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As soon as the range of motors and options is complete, it will be possible to use the 1LE1/1PC1 motors from Siemens in all areas and sectors of industry due to their numerous options. 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
  • Manufacturing industry
  • General machine construction

Motors with a cast-iron housing are particularly suitable for the following severe duty applications:

  • Petrochemical industry
  • Pharmaceuticals
  • Chemical industry
  • Printing industry
  • Process industry


Increasing energy costs have resulted in greater emphasis on the power consumption of drive systems. It is extremely important to utilize the full potential for minimizing energy consumption here to secure competitiveness today and in the future. The environment will also profit from reduced energy consumption.

This is the reason that already today we are developing a new generation of low-voltage motors. Innovative rotors create the perfect conditions for motors with a high degree of efficiency. IE1 and IE2 motors with the same output have the same dimensions. The new motors for IE2 (High Efficiency) offer considerable energy savings and protect our environment. We also consider environmental sustainability during production to preserve resources. Potting compounds and coatings are, for example, solvent-free.

The modular mounting concept provides total flexibility: Each motor is based on a uniform concept for all markets worldwide. Our motors are manufactured in accordance with the latest ecological concepts and are launched on the market step by step.

The new 1LE1 motor family is therefore one of the most compact in the world, because it is manufactured using innovative technology. For an optimized design, a compound of highly conductive materials is used in the rotor. This results in minimum rotor losses and an excellent starting and switching response.

The design of the 1LE1 motors ensures maximum flexibility and minimum installation costs. Users benefit from integral eyebolts, screw-on feet, reinforced bearing plates with optimum mechanical properties and easily accessible connection boxes. Encoders, brakes and separately driven fans can also be added without any problems. Smaller inventories make stockkeeping easier, so motor suppliers can respond to customer requirements more quickly.

The 1LE1/1PC1 motor family comprises two main series:

  • For SIMOTICS GP general purpose applications: Motors with an aluminum housing
    SIMOTICS GP 1LE1/1PC1 motors with an aluminum housing are suitable for a wide range of standard drive tasks in the industrial environment. Thanks to their particular low weight, they are predestined for applications in pumps, fans and compressors. But they also reliably fulfill their tasks in conveyor systems and lifting gear.

Brief overview


Output and voltage range:

0.55 ... 22 kW
for all commonly used voltages

Frame sizes and types of construction:

80 ... 160
in all common types of construction

Rated speed:

750 ... 3600 rpm

Number of poles:

2, 4, 6, 8

Efficiency classes:

  • IE2 (High Efficiency)
  • IE3 (Premium Efficiency)
  • NEE (NEMA Energy Efficient according to NEMA MG, Table 12-11)
  • NPE (NEMA Premium Efficient according to NEMA MG, Table 12-12)

  • For SIMOTICS SD severe duty applications: Motors with cast-iron housing
    SIMOTICS SD 1LE1 motors with a cast-iron housing are extremely rugged and are therefore the first choice for applications under harsh environmental conditions. They master dust or vibration in mills and mixers as well as the corrosive atmosphere in the petrochemical industry. Their design supports optimized heat dissipation and offers the same handling as the general purpose variants.

Brief overview


Output and voltage range:

0.75 ... 200 kW
for all commonly used voltages

Frame sizes and types of construction:

100 ... 315
in all common types of construction

Rated speed:

750 ... 3600 rpm

Number of poles:

2, 4, 6, 8

Efficiency classes:

  • IE1 (Standard Efficiency)
  • IE2 (High Efficiency)
  • IE3 (Premium Efficiency)
  • NEE (NEMA Energy Efficient according to NEMA MG, Table 12-11)
  • NPE (NEMA Premium Efficient according to NEMA MG, Table 12-12)

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 three efficiency classes (IE = International Efficiency):

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

IE1 to 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 motors, 50/60 Hz squirrel-cage motors from 0.75 to 375 kW, for all voltages below 1000 V

For further information, see: 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).

With effect from December 2010, EISA has extended the legal minimum efficiency requirements and the following motors must fulfill the NEMA Premium Efficient Level:

  • 1 to 200 hp
  • 2, 4 and 6-pole
  • 230 V, 460 V, motors with feet

In addition, the following motors, for example, must fulfill the NEMA Energy Efficient Level:

  • 201 to 500 hp
  • 8-pole
  • All voltages < 600 V except 230 V and 460 V
  • Flange-mounting motors without feet (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.

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

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

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

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
Motors with increased output and compact construction (1LE1)

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. They are offered in IE1 and IE2 and therefore reduce the operating costs.

Motors without fan cover and without external fan (1LE1 with order code F90)

Forced-air cooled motors with surface cooling without fan cover and without external fan are mainly used for driving fans.

Motors with reduced output without fan cover and without external fan (1PC1)

Naturally cooled motors with surface cooling without fan cover and 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)

Requirements 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 1LE1 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.

The complete range is covered by Price List D 81.1 P • October 2012 "0.2 Preferred and Express motors".

Spectrum of SIMOTICS SD 1LE1 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

IE2 High Efficiency


1LE1501 Basic Line – 0.75 … 200 kW


1LE1601 Performance Line – 0.75 … 200 kW

IE3 Premium Efficiency


1LE1503 Basic Line – 1.5 … 200 kW


1LE1603 Performance Line – 1.5 … 200 kW

NEMA Energy Efficient


1LE1521 Eagle Line Basic – 1.5 … 200 kW/2 … 250 hp


1LE1621 Eagle Line Performance – 1.5 … 200 kW/2 … 250 hp

NEMA Premium Efficient


1LE1523 Eagle Line Basic – 2.2 … 200 kW/3 … 250 hp


1LE1623 Eagle Line Performance – 2.2 … 200 kW/3 … 250 hp


There is considerable potential in the new 1LE1/1PC1 series of low-voltage motors. As a consistent further development of existing motors, the 1LE1/1PC1 motors offer numerous advantages.

Greater efficiency

Innovative rotor technology and manufacturing technology has been implemented for the IE1, IE2 and IE3 high efficiency motor variants. The energy-efficient motors are therefore considerably more compact.

The energy saving potential and lifecycle costs of the new motors can be calculated with the SinaSave software. The SinaSave program can be downloaded from the Internet using the following link: http://www.siemens.com/sinasave

The 1LE1 motors also impress customers with their extremely long life and their weight-optimized design has a positive effect on the stability of the equipment unit.

A wider range of applications

The motors are certified for worldwide use and satisfy high standards of quality (confirmed, for example, by CSA 1), UL 2), CQC 3)).

1) Canadian Standard Association

2) Underwriters Laboratories Inc.

3) China Quality Certification

Improved design

The optimized housing in modern EMC design has an attractive appearance and enhances functionality. The rotatable, accessible connection boxes, integral eyebolts, screw-on feet and reinforced bearing plates ensure this.

Greater output

For the same shaft height, the high-performance motors offer one complete rated output level more. We are also consistently implementing energy efficiency improvements here too. The motors are offered (based on the categories of IEC 60034-30) in various efficiency classes.

More flexibility

The optimized design of the motors makes installation easier in general. Encoders, brakes and separately driven fans can be retrofitted easily. Connection boxes and feet for flexible mounting can be selected. Smaller inventories make stockkeeping easier and motor suppliers can respond to customer requirements more quickly. Optimized manufacturing processes support fast availability. All motors up to 460 V can be operated either directly on the line or converter-fed.

For SIMOTICS SD severe duty applications: Motors with cast-iron housing

The right motor for various challenges

The following lines are available for severe duty applications:

  • Basic Line: rugged, reliable motors for machine construction
  • Performance Line: motors for the process industry with reinforced bearings and a rugged coating – for requirements that extend beyond the Basic Line
  • “Eagle Line“: motors for exporting to NAFTA; they fulfill the requirements of UL and CSA and are supplied with the electrical values stamped on the rating plate in accordance with EISA requirements

Comparison: Basic Line versus Performance Line


Basic Line

Performance Line

Bearing size

(63 from shaft height 280 upwards)



(standard from shaft height 280 upwards)

Standard from shaft height 160 upwards (optional for shaft height 100 to 132)

Paint system

Standard coating,
corrosion class C2 1)

Special coating,
corrosion class C3 1)


Drain plugs

T drains

Rating plate



Motor protection



Fan cover




12 months

36 months

1) C2 and C3 are corrosion classes according to DIN EN ISO 12944. The corrosion protection must be selected in accordance with the expected corrosiveness of the environment at the installation location as well as the required service life. Five corrosion classes are defined in the above-mentioned standard, ranging from a non-corrosive indoor atmosphere (C1) to a highly corrosive industrial or marine environment (C5 I and C5 M).

Compact design

The size of a motor is often an important aspect in the case of machines. For this reason, the 1LE1 motors in IE2 and IE3 are no longer than their predecessors in the 1LG series in IE2.

Another highlight: Some of the IE3 motors fit in the same housing as the IE2 motors. The efficiency classes naturally do not differ with regard to shaft height, so that the mechanical interface to the equipment unit remains the same. This also supports a largely problem-free efficiency upgrade to IE3 – without the need to adapt the mechanical design of a machine.

Greater output

In severe duty applications, increased output motors can also be the right solution if sufficient space is not available for a standard motor. Because these motors offer the same output in the next smallest frame size.

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 Section 0 "Introduction".

Type of motor

SIMOTICS GP/SD 1LE1/1PC1 IEC Low-Voltage Motors

Connection types

Star connection/delta connection
You can establish the connection type to be used from the Article No. supplements for the required motor.

Number of poles

2, 4, 6, 8

Frame sizes

80 M ... 315 L

Rated output

0.55 ... 200 kW (1LE1 motor series)/0.3 ...  9 kW (1PC1 motor series)


50 Hz and 60 Hz


Self-ventilated 1LE1 energy-saving motors with:

  • IE1 (Standard Efficiency)
  • IE2 (High Efficiency)
  • IE3 (Premium Efficiency)
  • NEE (NEMA Energy Efficient, according to NEMA MG, Table 12-11)
  • NPE (NEMA Premium Efficient, according to NEMA MG, Table 12-12)

Self-ventilated 1LE1 motors with increased output and:

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

Forced-air cooled 1LE1 motors without external fan and fan cover with:

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

Naturally cooled 1PC1 motors without external fan and fan cover with:

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


IEC 60034-30 IE1, IE2, IE3: 2, 4 and 6-pole
US Energy Independence Security Act EISA: 2, 4, 6 and 8-pole

Rated speed (synchronous speed)

750 ... 3000 rpm

Rated torque

9.9 ... 1546 Nm (1LE1 motor series)

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

Temperature class 155 (F), utilized acc. to temperature class 130 (B) (also for motors with increased output)
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 (1LE1 motor series) frame size 80 M to 315 L (IC 411)
  • Forced-air cooled (1LE1 motor series with order code F90) frame size 80 M to 160 L (IC 416)
  • Naturally cooled (1PC1 motor series) frame size 100 L to 160 L (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 Section 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 B°3, IM B6, IM B7, IM B8, IM V5 without protective cover, IM V6, IM V5 with protective cover
  • With flange: IM B5, IM V1, IM V3, IM B35
  • With standard flange and special flange (next larger flange): IM B14, IM V19, IM V18, IM B34

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

Standard: color RAL 7030 stone gray
See under "Paint finish" in Catalog D 81.1 • 2008 Section 0 "Introduction".

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

Level A (normal – without special vibration requirements)
Optionally: level B (with special vibration requirements)

See "Balance and vibration quantity" in Catalog D 81.1 • 2008 Section 0 "Introduction"

Shaft extension
according to DIN 748 (IEC 60072)

Balance type: half-key balancing as standard

See "Balance and vibration quantity" in Catalog D 81.1 • 2008 Section 0 "Introduction".

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

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


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

Modular mounting concept

Rotary pulse encoder, brake, separately driven fan or prepared for mountings.

Consistent series concept

  • Cast housing feet, screwed-on feet available as an option and retrofittable
  • Connection box obliquely partitioned and rotatable through 4 × 90°
  • Bearings at DE and NDE are of identical design, reinforced bearings available as an option


See "Supplements to article numbers and special versions"

Дальнейшая информация

For further information, please get in touch with your local Siemens contact.

At: http://www.siemens.com/automation/partner
to find out about certain technologies through Siemens contact partners worldwide.

Wherever possible, you will find a local contact partner for:

  • Technical support
  • Spare parts/repairs
  • Service
  • Training
  • Marketing & Sales
  • Technical consultation/engineering

You start by selecting a:

  • country
  • product or
  • sector.

By further specifying the remaining criteria you will find exactly the right contact partner with his/her respective expertise.