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Magnetic Starters

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Magnetic Starters for Air Compressors & Motor Control

Shop magnetic starters and magnetic motor starters for air compressors, pumps, and general motor control applications. PneumaticPlus offers Eaton and WEG enclosed starters in 230V single-phase, 230V 3-phase, and 460V 3-phase configurations with overload protection for safer, more reliable motor operation.

A magnetic starter is a motor control device that uses a contactor and overload relay to start and stop an electric motor while helping protect it from overload conditions. These starters are commonly used on air compressors because they allow a pressure switch or other control signal to operate the starter coil, while the starter itself handles the heavier motor switching duty.

Our magnetic starter category includes enclosed models for common compressor motor voltages and horsepower ranges, including 5 HP, 7.5 HP, 10 HP, 15 HP, and 20 HP options. You can shop by brand, horsepower, or voltage to quickly find the correct starter for your application, whether you need a 230V single-phase model for a shop compressor or a 460V 3-phase starter for industrial equipment.

Why use a magnetic starter?

  • Helps protect motors with overload protection.
  • Reduces switching load on pressure switches and other control devices.
  • Improves control reliability for repeated motor cycling.
  • Supports safer motor starting and stopping in enclosed form factors.
  • Makes it easier to match starters by voltage, phase, and horsepower.

How to choose the right starter

  • Match the motor horsepower to the starter rating.
  • Confirm line voltage and whether the motor is single-phase or 3-phase.
  • Check the overload adjustment range against the motor full-load amperage.
  • Verify enclosure type and indoor/outdoor suitability.
  • Confirm control circuit requirements, including pressure switch compatibility where applicable.

If you are replacing a compressor magnetic starter, always verify the motor nameplate, wiring configuration, overload range, and supply voltage before ordering. Choosing the correct enclosed magnetic starter helps extend motor life, reduce nuisance failures, and keep your compressed air system operating reliably.

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