HD Heavy Duty Power Resistors The Heavy Duty Resistor is mainly used for dynamic braking or where a pulse rated resistor is required. Power rating 200 - 750 watts 6 wattage sizes High short term capacity High element weight for value Good stability at high temperatures RoHS Compliant General Notes Ordering Procedure Power ratings Standard Resistor To specify standard: Series, Watts,Nominal Standard continuous ratings are from 200 watts to 750 watts. Value, Tolerance, e.g.: HD300 2R2 K For pulse ratings refer to the table below. Tolerance (Code) 5% (J) and 10% (K) Thermal cut-outs Cut-outs can be fitted to certain resistors which will operate a contact to disconnect the resistor to prevent overload damage. Resistance The minimum and maximum values shown below are those available within a range of standard resistance alloys. You may select any ohmic value between min and max values. Electrical Specifications Short Time (Seconds) Intermittent (Minutes) Ohmic Values Continuous Type 5 10 20 1/2 1 2 3 4 5 Min Max HD200 200 4000 3000 1800 1100 660 500 400 300 250 0.45 872 HD300 300 6000 4500 2700 1650 990 750 600 450 375 0.67 1294 HD400 400 8000 6000 3600 2200 1320 1000 800 600 500 0.90 1700 HD450 450 9000 6700 4000 2500 1500 1130 900 690 570 1.06 2100 HD600 600 12300 9200 5500 3200 1930 1460 1170 880 740 1.35 2600 HD750 750 14700 11000 6600 4000 2420 1830 1460 1100 920 1.60 3100 Operation once per hour Operating time in any 15 minute period With tapping band The power in watts to give a temperature rise of 300C in time stated ARCOL UK Limited, The information contained herein does not form part of Threemilestone Ind. Estate, a contract and is subject to change without notice. Arcol Truro, Cornwall, TR4 9LG, UK. operate a policy of continual product development, therefore, T +44 (0) 1872 277431 specifications may change. F +44 (0) 1872 222002 It is the responsibility of the customer to ensure that the E sales arcolresistors.com component selected from our range is suitable for the intended www.arcolresistors.com application. If in doubt please ask Arcol. Page 1 of 2 2/12.14HD Heavy Duty Power Resistors Dimensions (mm) B D C E H J K N L M Type B Max C Max D Max E max H Max J Max K max L max M Max N Max HD200 9.5 21.0 5.0 43.0 73.0 19.0 44.0 152.0 173.0 7 X 14 HD300 9.5 21.0 5.0 43.0 73.0 19.0 44.0 203.0 223.0 7 X 14 HD400 9.5 21.0 5.0 43.0 73.0 19.0 44.0 254.0 274.0 7 X 14 HD450 9.5 21.0 5.0 43.0 73.0 19.0 44.0 305.0 325.0 7 X 14 HD600 9.5 23.0 5.0 50.0 103.0 25.5 54.0 305.0 333.0 7 X 17 HD750 9.5 23.0 5.0 50.0 103.0 25.5 54.0 356.0 384.0 7 X 17 ARCOL UK Limited, The information contained herein does not form part of Threemilestone Ind. Estate, a contract and is subject to change without notice. Arcol Truro, Cornwall, TR4 9LG, UK. operate a policy of continual product development, therefore, T +44 (0) 1872 277431 specifications may change. F +44 (0) 1872 222002 It is the responsibility of the customer to ensure that the E sales arcolresistors.com component selected from our range is suitable for the intended www.arcolresistors.com application. If in doubt please ask Arcol. Page 2 of 2 2/12.14