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Hubbell Bulletin 4805 MAGNIFIER AC™ Magnet Controller

by Electric Controller and Manufacturing Company 

Bulletin 4805 MAGNIFIER AC™, patented high performance lifting magnet controller is used for DC magnets rated 15 to 300 Amperes. Typical applications include AC scrap, slab handling and coil handling cranes. The controller is rated for 0°C to 50°C ambient (enclosed) and is suitable for full or partial voltage magnets. The 4805 MAGNIFIER AC™ uses existing LIFT / DROP master switches or push button switches. The 4805 MAGNIFIER AC™ replaces transformer and rectifier, and DC magnet controller.

  • Patented AC solid-state magnet controller
  • Eliminates DC rectifier for reduced maintenance, weight and energy loss
  • Standard AC input voltage of 460VAC, 3ph, 50/60Hz
  • Voltage Boost for fastest available magnet charge and discharge
  • Voltage and current control for magnet lifts and drops
  • Voltage cutback included for scrap applications for cooler running magnets
  • Protection for the drive against cut cables and short circuits
  • Adjustable over voltage to 500VDC for magnified lifts without a DC rectifier
  • Voltage spikes reduced iin the magnet
  • Diagnostics and fault indicators with full text descriptions, time and date stamped
  • Three tier magnet over-temperature monitoring
  • Eliminates all contactor maintenance
  • Available for other line voltages (requires line transformer)