Mitsubishi M80 AC Reactor DH-AL-7.5K

DH-AL-7.5K is a Mitsubishi Electric AC reactor (line reactor) used in CNC power supply systems.

Description

• Manufacturer: Mitsubishi Electric
• Series: DH-AL series (400V class)
• Model: DH-AL-7.5K
• Type: AC Reactor (input reactor for CNC drive system)
• Rated Capacity: 7.5 kW class

Purpose / Function

The DH-AL-7.5K is not a drive or inverter. It is a supporting electrical component installed in front of CNC power supply units.

It is used to:

• Reduce harmonic distortion in the power line
• Limit inrush current during power ON
• Protect rectifier/converter units (like MDS-DH/MDS-EH CV units)
• Improve overall power quality and system stability
• Reduce electrical noise and stress on components

Where it is used

It is typically paired with Mitsubishi CNC power supply units such as:

• MDS-DH-CV series (400V CNC systems)
• MDS-EH-CV series (older MELDAS CNC systems)

Matching Power Range

• 7.5 kW class power supply systems
• Used in smaller CNC spindle/servo configurations
• In the same family, higher sizes include 11K, 18.5K, 30K, 37K, etc.

What it looks like in system terms

AC Supply → DH-AL-7.5K (reactor) → MDS Power Supply (CV unit) → DC Bus → Servo/Spindle Drives

Key point

• • It does not generate power
  • It is a protection + filtering component for CNC drive input side