Overview
The Fuji Electric 6RI75G-120B is a silicon-based 3-phase bridge rectifier module designed for high-reliability industrial power conversion applications. Manufactured by Fuji Electric, this rectifier integrates six diode elements configured as a bridge circuit for efficient full-wave rectification. The module is rated for 75A continuous current with a 1200V peak reverse voltage, making it suitable for motor drives, inverters, servo amplifiers, and uninterruptible power supplies.
Key Features
- 75A continuous current rating with 1200V peak reverse repetitive voltage
- 3-phase bridge rectifier configuration with isolated mounting
- Silicon diode elements coated with zinc oxide for temperature and humidity resistance
- Compact chassis-mount design for space-efficient installation
- Maximum peak forward voltage of 3V for low conduction loss
- Japanese-manufactured quality and durability
Technical Specifications
- Part Number: 6RI75G-120B
- Manufacturer: Fuji Electric
- Rectifier Type: 3-Phase Bridge
- Current Rating: 75A (continuous)
- Peak Reverse Voltage: 1200V
- Peak Forward Voltage: 3V (maximum)
- Diode Elements: 6 Silicon
- Mounting: Chassis-mount with isolated terminals
- Operating Temperature: Up to 150°C
- Configuration: 3-phase full-wave bridge
- Terminals: 5-pin
Typical Applications
- AC to DC inverters for three-phase motor drives
- Power supply units for DC servo motors
- Uninterruptible power supply (UPS) systems
- Industrial battery charger power supplies
- General-purpose DC power conversion modules
- AC and DC servo drive amplifiers
Compatibility & Replacements
Compatible With
- Three-phase industrial power distribution systems (380–480V AC)
- Motor drive and inverter circuits requiring 75A rectification
- Industrial servo and stepper motor control systems
- UPS and backup power systems
- Thermal design incorporating isolated mounting fins
Replaces / Drop-In Replacement For
- Other Fuji Electric 6RI75G series rectifiers with compatible voltage and current ratings
- Verify compatibility with your original equipment manufacturer (OEM) specifications before ordering to ensure proper gate trigger voltage, forward voltage, and thermal requirements match your application
Works With
- Industrial drive systems (ABB, Siemens, Mitsubishi, FANUC, Yaskawa)
- Three-phase rectification circuits (480V, 415V, 380V)
- Isolated mounting plate systems (no chassis ground required)
- Heat sink and thermal management assemblies
