The Aluminum Housed Resistors Chassis or AHR / AHRN is ideally used for machine and equipment industries. It has a compact and durable design with the ability to tolerate strong vibrations.
Also, This resistor is low-temperature with a better heat conduction. It is also suited as a loading resistor, braking resistors, resistive load simulation and capacitor discharge with higher power application.
The resistor series are made out of Nickel Copper or Nickel Chromium wire on ceramic core suited into an anodized heat sink, which uses an increase temperature molding compound. A Housed Resistor is available in Low Inductance AHRN and Precision Resistance Tolerance types.
It can support up to 500W power.
For more details, please visit following link.
http://www.mf-powerresistor.com/alum_Chassis.htm