Class 6121 and Class 6131 Mill Duty DC Crane Control Panels

These mill duty DC crane control panels are used to operate DC series wound motors in both hoist and travel drive applications. This control meets AIST and NEMA standards, and have been developed and refined by EC&M over the last 100 years. These extremely rugged crane control panels use the Class 7004 Type M LINE-ARC contactor, Class 7001 Type K relays, and Class 7001 Type ST1 acceleration relays. The controllers can be derated for use in ambient up to 60°C.



  • Mill Duty Class 7004 Type M LINE-ARC® contactors & Class 7001 Type ST-1 static timer and Type K relays Relays

  • Reversing dynamic lowering control for hoist drives

  • Reversing plugging control for bridge and trolley drives

  • Panel modifications available

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