Series of Electric Motors
Welcome to an introduction to the history of pioneering electric motors from Siemens! Although the 1LA7 series of electric motors is no longer produced and replaced by the more modern models of the 1LE series, it still remains an integral part of the industrial heritage.
Siemens 1LA7 series electric motors were once synonymous with reliability, performance and innovation. Designed with precision engineering and high efficiency in mind, these engines provided propulsion for a wide range of industrial applications.
Although the 1LA7 series is no longer available, Siemens continues to move forward with even more powerful and efficient 1LE series electric motors. As technology advances, the 1LE series offers even higher levels of efficiency, reliability and performance to meet the growing needs of industrial customers.
Although the 1LA7 series is no longer in production, Siemens still provides a wide range of industrial solutions to help you achieve your goals. Explore our range of modern 1LE series electric motors and discover how we can support your industrial growth and success.
Visit our Products to get more information about our latest electric motors and other industrial solutions from Siemens.
Three-phase low-voltage asynchronous short-circuit motors, with an aluminum frame.
Three-phase asynchronous motors are designed to drive industrial equipment, e.g. fans, pumps, machine tools, presses, etc.
They can be used for mild climates, in special designs and in other climatic conditions. Modified series and spec. design of engines.
| Specifications | |
|---|---|
| Series | Electric motor 1LA7 |
| Axial size | 56M – 160L |
| Performance | 0.06 kW – 18.5 kW |
| Number of poles | 2, 4, 6, 8 |
| Nominal voltage up to 3 kW | 230VD / 400VY, 50Hz // 460VY, 60Hz |
| Rated voltage above 3kW | 400VD / 690VY, 50Hz // 460VD, 60Hz |
| Frequency | 50 / 60 Hz |
| Cover | IP 55 |
| Face | IM B3, IM B5, IM B35 |
| Bone | aluminium |
- for ambient temperatures from -20 °C to +40 °C
- insulation class F
- altitude up to 1000 m
- for permanent load S1
- standard surface finish RAL 7030
Three-phase low-voltage asynchronous short-circuit motors, with an aluminum frame and with increased power.
Three-phase asynchronous motors are designed to drive industrial equipment, e.g. fans, pumps, machine tools, presses, etc. They can be used for mild climates, in special designs and in other climatic conditions. Modified series and spec. design of engines.
| Specifications | |
|---|---|
| Series designation | Electric motor 1LA9 |
| Size | 56M – 160L |
| Performance range | 0.14 kW – 24.5 kW |
| Number of poles | 2, 4 |
| Nominal voltage up to 3 kW | 230VD / 400VY, 50Hz // 460VY, 60Hz |
| Rated voltage above 3kW | 400VD / 690VY, 50Hz // 460VD, 60Hz |
| Frequency | 50 / 60 Hz |
| Cover | IP 55 |
| Face | IM B3, IM B5, IM B35 |
| Skeleton | aluminum |
- for an ambient temperature from -30°C to +40°C
- class F insulation
- altitude up to 1000 m
- for permanent load S1
- standard paint color RAL 7030
|
Specifications |
|
| Series designation | Electric motor 1LF7 |
| Size | 56M – 100L |
| Performance range | 0.12 kW – 3 kW |
| Number of poles | 2, 4 |
| Rated voltage | 1 f. 230V, 220V, 110V |
| Frequency | 50 Hz |
| Cover | IP 55 |
| Face | IM B3, IM B5, IM B35, IM B14 |
| Skeleton | aluminum |
- for an ambient temperature from -30°C to +40°C
- class F insulation
- altitude up to 1000 m
- for permanent load S1
- standard paint color RAL 7030
Three-phase low-voltage asynchronous short-circuit motors in a secured design, in an aluminum frame.
Version for an environment with a risk of explosion: guaranteed version EEx e II T1, T2 or T3, new 2G Ex eb (Gb).
Three-phase asynchronous motors in a secured design are intended for passive environments:
- fire hazard of flammable substances, fire hazard of flammable liquids
- explosion hazard of explosives described in ČSN 332310 and ČSN 332320
- 1MA7 motors can also be used in zone 2 areas
| Specifications | |
|---|---|
| Series designation | Electric motor 1MA7 |
| Size | 63M – 160L |
| Performance range | 0.18 kW – 13.5 kW |
| Number of poles | 2, 4, 6 |
| Nominal voltage up to 3 kW | 230VD / 400VY, 50Hz // 460VY, 60Hz |
| Rated voltage above 3kW | 400VD / 690VY, 50Hz // 460VD, 60Hz |
| Frequency | 50 / 60 Hz |
| Cover | IP 55 |
| Face | IM B3, IM B5, IM B35, IM B14 |
| Skeleton | aluminum |
- for an ambient temperature from -30°C to +40°C
- class F insulation
- altitude up to 1000 m
- standard paint color RAL 7030
Three-phase low-voltage asynchronous motors in short.
These are efficiency class IE1 motors made of gray cast iron with an axial height of 180 to 315 mm.
| Specifications | |
|---|---|
| Series designation | Electric motor 1LG4 |
| Size | 180M – 315L |
| Performance range | 11 kW – 200 kW |
| Number of poles | 2, 4, 6, 8 |
| Rated voltage | 400VD / 690VY, 50Hz // 460VD, 60Hz |
| Frequency | 50 / 60 Hz |
| Cover | IP 55 |
| Face | IM B3, IM B5, IM B35 |
| Skeleton | Gray cast iron |
- for ambient temperature from -20°C to + 40°C
- insulation class F
- altitude up to 1000 m
- for permanent load S1
- standard paint RAL 7030
Most common applications
Three-phase asynchronous motors are designed to drive industrial equipment, e.g. radial or axial fans, pumps, machine tools, presses, crushers, etc. They can be used for mild climate environments, in special designs and in other climatic conditions.
Power range depending on speed:
2-pole: 22 kW – 200 kW
4-pole: 18.5 kW – 200 kW
6-pole: 15 kW – 132 kW
8-pole: 11 kW – 110 kW
Three-phase low-voltage asynchronous motors in short.
These are motors made of gray cast iron with an axial height of 180 to 315 mm.
Energy-saving motors – “High efficiency” according to CEMEP.
| Specifications | |
|---|---|
| Series designation | Electric motor 1LG6 |
| Size | 180M – 315L |
| Performance range | 11 kW – 200 kW |
| Number of poles | 2, 4, 6, 8 |
| Rated voltage | 400VD / 690VY, 50Hz // 460VD, 60Hz |
| Frequency | 50 / 60 Hz |
| Cover | IP 55 |
| Face | IM B3, IM B5, IM B35 |
| Skeleton | Gray cast iron |
- for ambient temperature from -20°C to + 40°C
- insulation class F
- altitude up to 1000 m
- for permanent load S1
- standard paint RAL 7030
Most common applications
Three-phase asynchronous motors are designed to drive industrial equipment, e.g. radial or axial fans, pumps, machine tools, presses, crushers, etc. They can be used for mild climate environments, in special designs and in other climatic conditions.
Power range depending on speed:
2-pole: 22 kW – 200 kW
4-pole: 18.5 kW – 200 kW
6-pole: 15 kW – 132 kW
8-pole: 11 kW – 110 kW
Electric motors 1LA8 N-compact – Asynchronous low-voltage motors with short-circuit armature
| Specifications | |
|---|---|
| Series designation | Electric motor 1LA8 |
| Size | 315 – 450 mm |
| Performance range | 160 kW – 1000 kW |
| Number of poles | 2, 4, 6, 8 |
| Rated voltage | 400V D /690V Y, 500V D, 690 VD |
| Frequency | 50 / 60 Hz |
| Cover | IP 55 |
| Face | IM B3, IM B5, IM B35, IM V1 |
| Skeleton | Gray cast iron |
- for ambient temperature from -20°C to + 40°C
- insulation class F
- altitude up to 1000 m
- for permanent load S1
- standard paint RAL 7030
Most common applications
- pumps and fans
- extruders, mills
- compressors, vacuums
- bucket excavators
- belt conveyors
- technological equipment (presses, paper machines, shredders and others)
Currently replaced by the SIMOTICS SD 1LE5 series.
