Low-voltage motor control centers

tiastar™ motor control centers

Siemens tiastar industrial motor control centers (MCC) combine time-proven designs and components with the latest in technological advances to meet most applications. No matter how customized your needs may be, you can be assured that you are getting a finished product that represents the state-of-the-art in low-voltage motor control technology.

Watch our tiastar motor control centers overview video here

tiastar MCC options

tiastar standard MCCs

Siemens tiastar standard MCCs are designed as self-contained modular units which meet UL and NEMA standards. They come with rear-mounted, self-aligning copper stabs that firmly grasp onto the bus. Brackets guide the placement of units, further assuring positive engagement with the bus. From 22 mm to 30 mm pilot devices, from direct starters to world-class drives, Siemens tiastar standard MCCs have features and options to meet many specific needs. Other options include SIERS integrated electrical-racking system via retractable stabs and Sm@rtGear power distribution solution.

UL 845 labeling as applicable
CSA C22.2 No. 254-05 labeling as applicable when specified
Heavy-duty construction with up to 100 kA bus bracing
Up to 600 V 50/60 Hz
NEMA wiring
Plug-in units (up to size 5 starters)
Door/unit-mounted pilot-device panel
High-density compact units available to reduce footprint.

Learn more about tiastar standard MCCs.

tiastar smart MCCs

Siemens smart MCCs are networked, NEMA compliant MCCs that can communicate. They incorporates intelligent devices at the unit level to control and monitor motor operation, energy consumption, and power quality. Smart MCCs rapidly communicate with programmable logic controllers (PLCs) or process control systems via a data network.

Smart MCCs are internally interconnected using communication protocols which incorporate intelligent devices such as SIMOCODE pro motor management systems, SIRIUS 3RW44 soft starters, SIMATIC PLCs, Siemens variable-frequency drives (VFDs), and other smart components. Sm@rtGear power distribution solution is also optionally available.

Reduces wiring connections
Improves operational diagnostics
Simplifies installation and troubleshooting.

Learn more about tiastar smart MCCs.

tiastar arc-resistant MCCs

Siemens type 2A arc-resistant, low-voltage motor control centers are tested in accordance to IEEE C37.20.7, which contains and channels internal arcing fault incident energy. They provide an additional degree of protection to the personnel performing normal operating duties in close proximity to the equipment while the equipment is operating under normal conditions. Type 2A accessibility means the MCCs protect the operator in front, back, and sides of the equipment.

Siemens tiastar arc-resistant MCCs showcase state-of-art overarching technology. This means one can get an arc-resistant MCC that can have various smart components with communications, and/or high-density compact units. Other options include SIERS integrated electrical-racking system via retractable stabs and Sm@rtGear power distribution solution.

Automatic shutters
Reinforced doors
Insulated bus bar
Bolted wireway
Internal venting system
Deflectors
Modified pull-box with pressure flap.

Learn more about tiastar arc-resistant MCCs.

18-pulse drive

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 the high-level operating efficiency while reducing energy consumption and downtime.

18-pulse drive integrated into tiastar MCCs line-up
Compliance to IEEE 519
18 pulse diode converter bridge
Integrated clean power patented phase-shifting transformer
Electrical equipment and harmonic mitigation in one package
Based on SINAMICS G120 platform
Easy integration with smart MCCs.

Learn more about 18-pulse drive technology.

Aftermarket and replacement

Siemens supports a full line of replacement components, renewal parts, and aftermarket units to maintain the value and use of existing tiastar and previous generation motor control centers.

Learn more about aftermarket and replacement components, parts, and units.

Standard catalog offering

The cataloged standard structures and units offering includes the most popular configurations and enables them to be ordered by standard part numbers. These standard catalog structures will include:

Fixed-mounted feeder circuit breaker
Blank section,
Mounting panel,
Main lug only
Main circuit breaker vertical sections.

The standard catalog units will include common plug-in:

Full-voltage, non-reversing (FVNR)
Feeder circuit breaker (FCB) units.

In addition, Siemens also offers other standard options, such as pilot-device kits.

Learn more about the motor control center standard catalog offering.

Click here to view supporting documentation, such as flyers, brochures, installation guides, instruction manuals, white papers, specifications, certifications, and wiring diagrams for tiastar low-voltage motor control centers.

Have a technical or application question? Check out Siemens TechTopics, which is a series of papers that discuss issues of interest to users or specifiers of electrical equipment. Click here to go to TechTopics.