Arcol's HS Series of aluminium housed power resistors are designed for direct heatsink mounting with thermal compound to achieve maximum performance. A special encapsulation material and process allow for high insulation levels with minimal thermal resistnace at the element. Arcol aluminium power resistors have a resistance range of R005 to 100KΩ, up to 600W, a tolerance from 0.5%, and high power-to-volume ratio.