Triple Phase Maintained Door Controller

The LeesTech DC3M is a robust three-phase maintained-UP / dead-man-DOWN door controller designed for industrial roller doors, sliding doors, and commercial gate systems.
Built for reliability and safety, it features integrated UP and DOWN contactors, an overload relay, and dedicated terminal connections for the motor, power supply, and limit switches.
Its IP65-rated plastic enclosure ensures long-term durability in warehouses, factories, and outdoor installations, making the DC3M ideal for heavy-duty industrial applications where safety and dependability are paramount.

• Maintained UP operation — press once to open; stops automatically at the limit switch or when STOP is pressed.

• Dead-man DOWN control — requires constant pressure to close for safe manual supervision.

• Built-in overload relay for motor protection and fault prevention.

• Integrated UP / DOWN contactors for reliable direction control.

• IP65-rated enclosure — dust-tight and water-resistant for industrial environments.

• Clearly labeled terminals for simple connection of supply, motor, and limit switches.

• Designed for 400 V AC 50 Hz three-phase motors up to 2.2 kW.

• Fully compatible with LeesTech safety accessories, such as key switches, beam sensors, and transmitters.