The designation 1LA8 453-6PS50-Z450 is ambiguous. Available base-model data identifies , while -Z denotes special options; the specific option code 450 is not confirmed. Do not treat the base-model electrical data as final until Siemens verifies the complete order code and serial number.
Available Base-Motor Data
| Motor type | Low-voltage squirrel-cage motor |
| Application | Special rotor for SIMOVERT MASTERDRIVES operation |
| Protection | IP55 |
| Thermal specification | Temperature class F; 6 PTC thermistors |
| Poles and rating | 6-pole, 630 kW, 50 Hz mains |
| Frame size | 450 |
| Electrical marking | 3 AC, 50 Hz, 500 V D |
| Mounting | IM B3 |
The base listing marks the connection as D, consistent with delta. However, a special -Z option can change electrical data, so verify the actual nameplate before selecting voltage, connection, protection, or drive settings.
Resolve the Voltage Conflict
The evidence contains two incompatible 50 Hz statements: the base listing specifies 500 V D, while a separate winding statement gives a 380–420 V range at 50 Hz and 440–480 V at 60 Hz. The latter ranges are not tied conclusively to the complete 1LA8 453-6PS50-Z450 order code. Do not energize or configure the motor from those ranges alone.
Use the motor nameplate and Siemens serial-number records as the controlling sources. Also confirm whether “450” is an option suffix or a mistaken repetition of frame size 450.
Obtain the Required Winding Information
- Record the complete type designation exactly as stamped on the nameplate, including every character following -Z.
- Record the motor serial number and all nameplate voltage, frequency, connection, current, and duty markings.
- Submit the type code and serial number through an official Siemens support or authorized service channel and request the order-specific electrical data and option decoding.
- If the request concerns repair data such as wire gauge, conductors per slot, coil pitch, or a winding diagram, use a Siemens-authorized service center; the evidence indicates that manufacturers do not disclose these internal winding details.
- Before operation, verify that the documented voltage, frequency, and delta/star connection match both the nameplate and the supply or drive configuration.
FAQ
The available base data states 3 AC, 50 Hz, 500 V D, and the supplied winding information identifies delta. Confirm the actual nameplate because a -Z special option may change the electrical data.
What does -Z450 mean on a Siemens 1LA8 motor?
-Z indicates special options, but option 450 is not identified in the available evidence. Because 450 is also listed as the motor size, Siemens must verify the complete code using the serial number.
Can I get the wire gauge and coil pitch for a 1LA8 motor?
The evidence indicates that internal data such as wire gauge, conductors per slot, pitch, and winding diagrams is not disclosed. For a failed motor, request repair through a Siemens-authorized service center using the complete type code and serial number.