Here’s a concise breakdown of the product MR-RB6B-4 from Mitsubishi Electric:

 Product Summary: MR-RB6B-4

• Category: Motor & Motion Control

• Series: MELSERVO-J3

• Function: Optional Regenerative Brake Unit

• Power Capacity: 500 W

• Resistance: 20 Ohm

• Application: For use with 400V 3-phase systems

• Purpose: Absorbs excess regenerative energy during deceleration of servo motors to prevent overvoltage

• Manufacturer: Mitsubishi Electric

• Common Use Cases: CNC machines, industrial automation systems, high-speed servo operations

• Compatibility: Designed for Mitsubishi servo amplifiers (J3 Series and possibly others)