18-pulse drive motor control centers

18-pulse drive motor control centers

480 V
  • 50 - 100 HP

  • Short-circuit rating 65 kA

  • NEMA 1 base enclosure and optional NEMA 12

18-pulse drive MCCs

Siemens tiastar motor control centers with integrated 18-pulse ac drives technology offer a simple, clean power motor control solution. With a modular, open-architecture design, tiastar MCCs are rugged, time-proven, and have many features and options to meet the needs of water/wastewater applications. Engineered with integrated components to reduced line harmonics, tiastar MCCs do more than simply meet IEEE 519 requirements, they offer high-level operating efficiency while reducing energy consumption and downtime.

  • Increase service life of process equipment with active management of assets including motors and pumps 
  • Improve power quality and operating efficiency result in energy savings
  • Process control flexibility to increase overall operational performance.


Watch the videos below to learn more about the Siemens tiastar low-voltage motor control center family and the SIERS retractable stabs option.


  • 18-pulse drive integrated into tiastar motor control centers line-up

  • Compliance to IEEE 519

  • 18-pulse diode converter bridge

  • High efficiency (low losses) results in energy savings

  • Integrated clean power patented phase-shifting transformer.

Modular design:

  • Electrical equipment and harmonic mitigation in one package

  • Wide range of options

  • Based on SINAMICS G120 platform

  • Common horizontal bus

  • Eliminate remote mounting of individual components

  • Easy integration with smart MCC.

  • Municipal – Water and effluent treatment facilities, pump and lift stations
  • Oil and gas – Pipeline pumps
  • Power utilities – Pumps, fans, and blowers
  • Compressors – HVAC chiller plants
  • Conveyors – Mining and other large conveying systems
  • Other applications – Irrigation systems, blowers, etc. 
Technical data
Rating at 480 V
50-200 HP
Short-circuit current rating
65 kA
Base NEMA 1
Optional NEMA 12
Horsepower rating
50-60 HP
40” W x 20” D x 90” H
75-300 HP
50” W x 20” D x 90” H

Mailing address

Siemens Industry, Inc.

7000 Siemens Road

Wendell, North Carolina 27591

United States