Description
FANUC A06B-6120-H045 Power Supply Module (αi Series – PSM-45HVi)
The A06B-6120-H045 from FANUC is a high-capacity αi series power supply module (PSM-45HVi) used in CNC machine tools to generate and regulate DC bus power for servo and spindle amplifier systems.
Detailed Product Description (Website Ready)
The FANUC A06B-6120-H045 is a high-power CNC power supply module designed for the αi generation drive system. It converts 3-phase AC input (400–480V) into a stable DC bus voltage (~565–679V DC), which is then distributed to multiple servo and spindle amplifiers in the CNC machine.
This module is part of the PSM-45HVi class, typically used in large CNC machining centers and heavy-duty industrial automation systems, where multiple high-power axes and spindles require stable, high-capacity energy distribution.
It ensures smooth machine operation, high precision machining, and reliable performance even under continuous heavy load conditions.
Key Features & Benefits
PSM-45HVi High-Power Module
Designed for efficient conversion of industrial AC power into regulated DC supply for CNC servo and spindle systems.
Very High Power Capacity (~50 kW Class)
Suitable for large CNC machines and multi-axis systems requiring high energy output.
Stable DC Bus Output
Provides approximately 565–679V DC output, ensuring consistent drive performance across all axes.
400–480V Industrial Input
Operates on standard 3-phase industrial power supply for CNC machine compatibility.
Integrated Cooling System
Uses forced-air cooling for stable operation under continuous industrial load.
FANUC αi System Integration
Works seamlessly with FANUC servo and spindle amplifiers through shared DC bus architecture.
Technical Specifications (Typical)
- Model: A06B-6120-H045
- Series: FANUC αi (PSM-45HVi)
- Type: Power Supply Module
- Input Voltage: 400–480V AC (3-phase)
- Output Voltage: ~565–679V DC
- Power Rating: ~50 kW class
- System Use: Servo + spindle DC bus supply
- Cooling: Forced air cooling
- Application: CNC machining centers / heavy industrial automation
Applications
- Large CNC machining centers
- Heavy-duty milling and turning machines
- Multi-axis production systems
- High-power spindle machining systems
- Industrial automation lines
Important Notes
- This is a central DC power supply module, not a servo amplifier or spindle drive.
- It operates as part of a shared DC bus system feeding multiple drive units.
- Commonly supported through repair, exchange, or refurbishment services due to high-voltage industrial design.

