1974A Ohmite

280 Series Corrib Fixed and Adjustable Vitreous Enamel Power Corrib resistors are ideal for applications involving high currents at very low resistance valuesas low as 0.1 for the 300 Watt unit. These large, heavy- FeatuReS duty resistors are designed to withstand frequent Also available in Centohm or Silicone coating. start-stop cycles characteristic of motor starting, Consult Ohmite. dynamic braking and other similar applications. Special order units are available to accommodate up Ribbed construction aids in rapid cooling. to 1500 watts. Designed for equipment requiring low resistance Corribs are manufactured with corrugated resis- loads at low ohmic values and high current capac- tive wire. To accelerate cooling, the wire is securely ity. fused to the ceramic core by the protective vitreous Especially constructed for motor starting, dynamic enamel coating to improve durability. Corrib resis- braking, etc. tors are hollow-core units which can be securely fastened to chassis surfaces with thru bolts and RoHS compliant product available. Add E suffix to brackets. part number to specify. chaRacteRiSticS ReSiStoR haRdwaRe Thru Bolts Mounting Brackets for Lugs for 300 Watt Coating Lead free vitreous enamel except for extreme 300 Watt Corrib Adjustable Corrib low resistance 35 watt models, and very large models (750 watts and up), which are supplied Includes two each bracket, bolt, Part No. Res. Part No. Res. in Silicone Ceramic washers (centering, mica, lock) and 1974-A 0.40 1974-B 0.10 1 1 /16 wire 0.50 /8 wire 0.12 nut. Note: Single unit mounting Core Tubular Ceramic 0.63 0.16 contains one each bolt and nut two 1.00 0.20 Terminals Tinned lug with hole. RoHS solder composition 1.50 0.25 each all washers. 1.60 0.31 is 96% Sn, 3.5% Ag, 0.5% Cu Moun. 2.00 0.80 Part No. No. of Derat. 2.50 1.20 Adjustable Lug Supplied with adjustable 300 watt models. Part Slotted Elongated Resistors % 3.10 No. 1974-A or 1974-B 6110-81/2 6126-P-81/2 1 100% 4.00 5.00 - 6127-P-81/2 2 83% Resistance Max. 63 for 300W version 6.30 8.00 - 6128-P-81/2 3 80% 10.00 Tolerance 10% (K) - 6129-P-81/2 4 80% 12.00 16.00 Power rating Based on 25C free air rating 20.00 25.00 Derating Linearly from 100% +25C to 0% +400C 30.00 48.00 10 times rated wattage for 5 seconds 50.00 Overload Temperature 400 ppm/C coefficient Dielectric with- 1000 VAC measured from terminal to mounting standing voltage bracket To calculate use the formula P/R max. amps (continued) 1-866-9-OHMITE Intl 1-847-258-0300 Fax 1-847-574-7522 www.ohmite.com info ohmite.com 115280 Series Corrib Fixed and Adjustable Vitreous Enamel Power dimenSionS C D L Core and Terminal Selection for Made to Order Type Code Code Free Air for Free Air for Core Dimensions Core Dimensions Term. Term. Wattage Core Wattage Core Ohms Ohms Rating D: OD C: ID L: Length Dia. Min. Max. Type Rating D: OD C: ID L: Length Dia. Min. Max. Type 1500 2.50 1.75 20.0 (508.00mm) S 0.56 358 45 315 1.00 0.625 10.0 (254.00mm) N 0.11 67 45 1000 (63.5mm) (44.45mm) 15.0 (381.00mm) S 0.41 258 215 (25.40mm) (15.88mm) 7.0 (177.60mm) N 0.068 43 750 12.0 (304.80mm) S 0.31 198 190 6.0 (152.40mm) N 0.056 35 380 6.0 (152.40mm) S 0.13 78 150 5.0 (127.00mm) N 0.043 27 125 4.0 (101.60mm) N 0.031 19 550 1.625 1.125 11.75 (298.45mm) R 0.21 133 45 500 (41.28mm) (28.58mm) 10.50 (266.70mm) R 0.19 117 180 0.75 0.50 6.5 (165.10mm) M 0.031 29 45 400 8.5 (215.90mm) R 0.14 91 160 (19.05mm) (12.70mm) 6.0 (152.40mm) M 0.038 26 140 5.0 (127.00mm) M 0.028 20 270 1.50 1.125 5.0 (127.00mm) Q 0.065 41 45 105 4.0 (101.60mm) M 0.020 14 (38.10mm) (28.58mm) 100 3.5 (88.90mm) M 0.021 11 395 1.125 0.75 11.25 (285.75mm) P 0.14 87 45 135 0.563 0.313 6.0 (152.40mm) K 0.028 21 46 375 (28.58mm) (19.05mm) 10.5 (266.70mm) P 0.13 80 110 (14.30mm) (7.95mm) 5.0 (127.00mm) K 0.029 16 300 8.5 (215.90mm) P 0.099 63 90 4.0 (101.60mm) K 0.021 12 46 220 6.0 (152.40mm) P 0.063 39 35 2.0 (50.80mm) K 0.0097 0.11 185 5.0 (127.00mm) P 0.05 30 155 4.25 (107.95mm) P 0.038 25 35 0.563 0.313 2.0 (50.80mm) K 0.12 5.6 40 140 4.0 (101.6mm) P 0.04 20 (14.30mm) (7.95mm) oRdeRing inFoRmation Standard Made-to-order Coating See website for Blank =Vitreous custom core info C= Centohm RoHS Compliant S= Silicone Series Wattage & Terminal Type Ohms Tolerance Series Wattage Tolerance Ohms C = Fixed K = 10% example: 230 = Adjustable Core Code See Resistor Example: F= 1% E = Adjustable 1R0 = 1 280 = Fixed See Core and Terminals for R0200 = 0.02 7 H= 3% 250 = 250 480 = Silicone fixed Terminal Selection Tubular Cores R2000 = 0.2 7 J= 5% 1K0 = 1,000 680 = Centohm fixed 2R500 = 2.5 7 K= 10% (std.) 25K = 25,000 10R00 = 10 7 25K5 = 25,500 Standard part numbers for 280 series NOTE: Wattages above C300KR10E C300K2R0E E300K10RE E300K6R3E 750 watts come with C300KR12E C300K2R5E E300K12RE E300K8R0E silicone coating. C300KR20E C300K3R1E E300K16RE E300KR10E C300KR25E C300K4R0E E300K1R0E E300KR12E C300KR31E C300K5R0E E300K1R6E E300KR16E C300KR40E C300K6R3E E300K20RE E300KR20E C300KR50E C300K8R0E E300K2R0E E300KR25E C300KR63E C300K10RE E300K2R5E E300KR31E C300K1R0E C300K12RE E300K3R1E E300KR40E C300K1R2E C300K16RE E300K4R0E E300KR50E C300K1R6E C300K20RE E300K5R0E E300KR63E E300KR80E 116 1-866-9-OHMITE Intl 1-847-258-0300 Fax 1-847-574-7522 www.ohmite.com info ohmite.com