This braking resistor is part of the R RJ Oh servo inverter series and is designed to safely dissipate braking energy in servo drives and inverters. It supports power ratings from 200W up to 500W, making it suitable for a range of deceleration requirements. The unit features an aluminum shell that provides efficient heat dissipation and robust mechanical durability. The specification includes a variant noted as 300W 40 RJ, representing one available configuration in this family. Key benefits Protects servo drives and motors during rapid deceleration by absorbing braking energy Improves braking stability and reliability of the drive system Compact, rugged aluminum shell design for durable operation and effective heat dissipation Multiple wattage options (200W, 250W, 300W, 400W, 500W) to fit different drive sizes and energy needs Simple integration with compatible servo inverters and braking circuits Key attributes Functionality: braking resistor for servo inverters Compatibility: suitable for use with servo drives and inverters that require braking energy dissipation Power options: 200W, 250W, 300W, 400W, 500W Model variant: includes a configuration described as 300W 40 RJ Material: aluminum shell for heat dissipation and durability Performance: designed to deliver stable braking resistance across the selectable wattage configurations Size and physical characteristics Aluminum shell construction for lightweight yet sturdy housing Designed for reliable operation in braking applications within servo drive assemblies Footprint and mounting compatible with standard braking resistor installations in drive panels (specific dimensions are aligned with series variants) Typical applications CNC machine tool axes braking, where controlled deceleration is critical to positioning accuracy Robotic arms and automated handling systems that require reliable energy dissipation during stops Packaging and printing equipment with frequent deceleration cycles where braking energy must be managed Any servo drive or inverter braking circuit that calls for a dedicated resistor to absorb deceleration energy How to choose and use Select wattage in the 200W–500W range to match the braking energy needs of your drive and deceleration profile The 300W 40 RJ variant is a referenced configuration within this series Install in the drive panel with appropriate mounting and ensure adequate cooling for the aluminum shell Use as part of a compatible braking circuit designed for servo inverter applications to protect drive electronics and improve stopping performance Notes This description reflects the product range and features as indicated by the title including the 200W, 250W, 300W, 400W, 500W options and the 300W 40 RJ variant All details are provided to align with the original product brand, specifications, model, and features without modification or omission