1-866-9-ohmite ? intl 1-847-258-0300 ? fax 1-847-574-7522 ? www.ohmite.com ? info@ohmite.com 113 270 series vitreous enamel power series wattage ohms core code voltage std. terminal l12 12 0.1-51k d 565 57 l25 25 0.15-100k k 625 40 l50 50 0.38-260k k 1625 40 L100 100 0.23-101k m 2845 40 l175 175 0.13-101k p 3595 46 l225 225 0.16-129k p 4595 46 l500 500 0.38-218k s 4970 45 L1000 1000 0.69-392k s 8900 45 non-inductive versions available; other sizes available; also available in low cost centohm or silicone coating; consult ohmite. * maximum voltage is based on ohms law [v= p*r] as limited by the resistance value of specified product coating lead free vitreous enamel. large models (500 watts and up) are supplied in silicone ceramic. also available in low-cost centohm coating; consult factory. core tubular ceramic. terminals solder coated radial lug. rohs solder composition is 96% sn, 3.5% ag, 0.5% cu derating linearly from 100% @ +25c to 0% @ +350c. tolerance 5% 1 and over (j); 10% under 1 (k) power rating based on 25c free air rating. overload 10 times rated wattage for 5 seconds. temperature coefficient 1 to 20: 400 ppm/c; above 20: 260 ppm/c dielectric withstanding voltage 1000 vac: 12 to 100 watt rating. 3000 vac: 175 to 225 watt rating (measured from terminal to mounting bracket) max. amps use the formula p/r power limitations for high resistance values when resistance exceeds the resistance values listed, derate the power rating by 25% to improve reliability. no power derating necessary for ratings higher than 100w. power resistance rating value 12w 3,900 25w 12,000 50w 35,000 100w 75,000 mounting hardware see http://www.ohmite.com/techdata/lug-mounting.php select 270 type fixed resistors for applications requiring wattage ratings from 12 to 1000 watts. the 270 type resistors are equipped with lug termi - nals suitable for soldering or sturdy bolt connection. when secure mounting is required, the hollow core of these resistors permit fastening with spring-type brackets, thru bolts or thru bolts with slotted-steel brackets. suitable for rugged applications, the 270 type resistors feature all-welded construction and durable lead free vitreous enamel coating. mounting brackets not included with resistors. feature s ? terminals suitable for soldering or bolt connection ? high wattage applications ? rugged lead free vitreous enamel coating ? flame resistant coating ? all-welded construction ? rohs compliant available ? fast on option C see terminal 538, http://www.ohmite.com/techdata/terminals.pdf serie s specific ations characteristics (continued)
1-866-9-ohmite ? intl 1-847-258-0300 ? fax 1-847-574-7522 ? www.ohmite.com ? info@ohmite.com 114 standard part numbers for 270 series = standard values; check availability using the worldwide inventory search at www.ohmite.com ,i i i i -ii instead of vitreous enamel. x 1 4.7 10 12 22 27 47 100 1 2 4 qqq, 10 100 200 qqq 1,000 2,000 270 470 1000 1200 2200 2700 4700 10000 22000 4,000 qqq 6,000 qqq 10,000 qqq 12,000 qqq 20,000 qqq 40,000 qqq 60,000 qqq 100,000 qqq 200,000 qqq ohmic value 12 watt ohmic value 12 watt ohmic value CCC 25 CCC 50 L100jCCC 100 CCC 175 wattage part no. prefix suffix xCCC 225 CCC 500 L1000jCCC1000 ohmic value CCC 25 CCC 50 L100jCCC 100 CCC 175 wattage part no. prefix suffix xCCC 225 CCC 500 L1000jCCC1000 t olerance j= 5% k= 10% core diameter see ?core and t erminal selection? ohms r500 = 0.500 1r00 = 1 250r = 250 1k00 = 1,000 25k0 = 25,000 25k5 = 25,500 rohs compliant coating 270 = v itreous 470 = silicone ceramic w attage t erminal t ype see ?resistor t erminals for t ubular cores? non-inductive blank =s tandard n= non-inductive l 25j100e to lerance j= 5% k= 10% ohms 1r0 = 1 250 = 250 1k0 = 1,000 25k = 25,000 25k5 = 25,500 rohs compliant w attag e series coating blank =v itreous c= centohm s= silicone non-inductive blank =s tandard n= non-inductive f = fast on (optional) see website for custom core and terminal info l d c series wattage l d c core code* std. term.** l12 12 1.75 / 44.4 0.313 / 7.94 0.188 / 4.76 d 57 l25 25 2.0 / 50.8 0.562 / 14.3 0.313 / 7.94 k 40 l50 50 4.0 / 101.6 0.562 / 14.3 0.313 / 7.94 k 40 L100 100 6.5 / 165.1 0.750 / 19.1 0.50 / 12.7 m 40 l175 175 8.5 / 215.9 1.125 / 28.6 0.75 / 19.1 p 46 l225 225 10.5 / 266.7 1.125 / 28.6 0.75 / 19.1 p 46 l500 500 12.0 / 304.8 2.50 / 63.5 1.75 / 44.5 s 45 L1000 1000 20.0 / 508.0 2.50 / 63.5 1.75 / 44.5 s 45 * http://www.ohmite.com/techdata/200-210-270-custom.pdf ** http://www.ohmite.com/techdata/terminals.pdf in./mm vitreous enamel power standard made-to-order
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