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Contactors and starters

Star-delta contactor combination

Eaton’s Moeller series star-delta contactor combinations are efficient and reliable devices for motor starting applications, offering significant benefits in terms of current reduction and torque control. Their widespread use across various industries underscores their versatility and effectiveness in managing the challenges associated with electric motor startups. Through proper installation, configuration, and maintenance, Eaton’s star-delta contactor combinations can ensure smooth, energy-efficient, and cost-effective motor operations for years to come.

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Core features

  • Torque Control: Limits the starting torque, reducing mechanical stress on the motor and connected machinery
  • Pre-wired: for quick and simple installation
  • Current Reduction: Reduces the starting current to approximately one-third of the Direct Online (DOL) starting current, minimizing electrical stress on the power supply and motor
Current Reduction
Reduces the starting current to approximately one-third of the Direct Online (DOL) starting current, minimizing electrical stress on the power supply and motor
Pre-wired
For quick and simple installation
Torque Control
Limits the starting torque, reducing mechanical stress on the motor and connected machinery

Eaton’s star delta contactor combinations are widely utilized in various industrial applications, including:

Production line beverage factory getty 496837097
  • Industrial machinery: Ideal for machines requiring a gradual increase in speed and torque, such as conveyors, compressors, and pumps.
  • HVAC Systems: Effective in starting large HVAC motors smoothly, ensuring prolonged service life and reliability.
  • Water and wastewater treatment: Ensures smooth operation of pumps and other machinery in water treatment facilities.
  • Textile and paper mills: Suitable for controlling the startup of motors in textile looms and paper production machinery, where precise torque control is critical.

Pre-wired configuration

The start delta contactor combinations are sold pre-wired offering many advantages:

  • Quick installation: The pre-wired units can be rapidly mounted and integrated into existing systems, reducing downtime during installation
  • Consistent quality: Factory wiring ensures consistent quality and reliability, reducing the risk of wiring errors that could lead to malfunctions or failures
  • Reduced on-site errors: Pre-wiring minimizes the possibility of human errors during installation, which can lead to unsafe conditions.
  • Lower installation costs: Thanks to the reduced labor time and on-site wiring requirements , overall installation costs are minimized
Eaton Moeller series Star-delta contactor combiner
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