300w arcol power resistor aluminium clad hs series arcol hs300 1r j 1r 5 300w aluminium clad wirewound power resistor from the arcol hs series high quality and stability designed for heatsink mounting using thermal compound to achieve maximum performance manufactured in line with the requirements of iec115 and mil18546 suitable for pulse applications arcol hs300 1r j 300w aluminium clad resistor