Description
The Mitsubishi D-AL-37K is an AC line reactor (input reactor) used in MDS-E / MDS-D CNC drive systems, installed between the AC power supply and the converter (CV) unit.
It is a power quality and protection component, not a drive or motor.
š§ Key Specifications (D-AL-37K)
| Specification | Value |
|---|---|
| Type | AC Reactor (Line Reactor) |
| Series | Mitsubishi CNC MDS systems |
| Rated Capacity | 37 kW |
| Rated Current | 133 A |
| Rated Voltage | 200ā240 V AC |
| Frequency | 50/60 Hz |
| Function | Harmonic suppression + inrush current limiting |
| Cooling Method | Natural air cooling |
| Installation | Series connection with CV unit input |
š Official Mitsubishi CNC specification tables confirm that D-AL-37K is the 37 kW class reactor paired with MDS-E-CV-370 converter units.
āļø What it does
The D-AL-37K is installed in CNC drive cabinets to:
- Reduce harmonic distortion sent back to the power grid
- Limit inrush current during power ON
- Protect the CV (converter) unit from electrical stress
- Improve power factor and system stability
- Smooth incoming 3-phase AC supply
š Typical matching unit
Used with:
- MDS-E-CV-370 (37 kW converter unit)
š Features
- Passive coil design (no electronics, very reliable)
- Improves CNC system power quality
- Reduces electrical noise (EMI)
- Extends converter unit lifespan
- Maintenance-free operation
š Applications
- CNC machining centers
- CNC turning machines
- Mitsubishi MELDAS CNC drive systems
- Servo + spindle drive cabinets (MDS-E series)