RES-280 OHMITE | Alldatasheet

Document overview

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Technical content

1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com 115

280 Series

Corrib® Fixed and Adjustable Vitreous Enamel Power Moun. Part No. No. of Derat. Slotted Elongated Resistors % 6110-81/2 6126-P-81/2 1 100% Lugs for 300 Watt Adjustable Corrib ReSiStoR haRdwaRe Thru Bolts Mounting Brackets for

300 Watt Corrib

Includes two each bracket, bolt, washers (centering, mica, lock) and nut. Note: Single unit mounting contains one each bolt and nut; two each all washers. chaRacteRiSticS Coating Lead free vitreous enamel except for extreme low resistance 35 watt models, and very large models (750 watts and up), which are supplied in Silicone Ceramic Core Tubular Ceramic Terminals Tinned lug with hole. RoHS solder composition is 96% Sn, 3.5% Ag, 0.5% Cu Adjustable Lug Supplied with adjustable 300 watt models. Part No. 1974-A or 1974-B Resistance Max. 63Ω for 300W version Tolerance ±10% (K) Power rating Based on 25°C free air rating Derating Linearly from 100% @ +25°C to 0% @ +400°C Overload 10 times rated wattage for 5 seconds Temperature coefficient ±400 ppm/°C Dielectric with- standing voltage

1000 VAC measured from terminal to mounting

max. amps use the formula √P/R Corrib® resistors are ideal for applications involving high currents at very low resistance values—as low as 0.1Ω for the 300 Watt unit. These large, heavy- duty resistors are designed to withstand frequent start-stop cycles characteristic of motor starting, dynamic braking and other similar applications. Special order units are available to accommodate up to 1500 watts. Corribs ® are manufactured with corrugated resis- tive wire. To accelerate cooling, the wire is securely fused to the ceramic core by the protective vitreous enamel coating to improve durability. Corrib resis- tors are hollow-core units which can be securely fastened to chassis surfaces with thru bolts and brackets.

FeatuReS

  • Also available in Centohm or Silicone coating. Consult Ohmite.
  • Ribbed construction aids in rapid cooling.
  • Designed for equipment requiring low resistance loads at low ohmic values and high current capac- ity.
  • Especially constructed for motor starting, dynamic braking, etc.
  • RoHS compliant product available. Add “E” suffix to part number to specify. Part No. Res. Part No. Res. 1974-A 0.40 1974-B 0.10 1/16 wire 0.50 1/8 wire 0.12 0.63 0.16 1.00 0.20 1.50 0.25 1.60 0.31 2.00 0.80 2.50 1.20 3.10 4.00 5.00 6.30 8.00 10.00 12.00 16.00 20.00 25.00 30.00 48.00 50.00 (continued)

1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com116 See website for custom core info Tolerance F= 1% H= 3% J= 5% K= 10% (std.) Ohms Example: R0200 = 0.02 7 R2000 = 0.2 7 2R500 = 2.5 7 10R00 = 10 7 Series 230 = Adjustable 280 = Fixed 480 = Silicone fixed 680 = Centohm fixed Wattage & Core Code See “Core and Terminal Selection” Terminal Type See “Resistor Terminals for Tubular Cores” Tolerance K= 10% Ohms example: 1R0 = 1Ω 250 = 250Ω 1K0 = 1,000Ω 25K = 25,000Ω 25K5 = 25,500Ω RoHS Compliant Series C = Fixed E = Adjustable Wattage Coating Blank =V itreous C= Centohm S= Silicone Corrib® Fixed and Adjustable Vitreous Enamel Power

oRdeRing inFoRmation

Core and Terminal Selection for Made to Order Type 750 12.0” (304.80mm) S 0.31 198 380 6.0” (152.40mm) S 0.13 78 400 8.5” (215.90mm) R 0.14 91 300 8.5” (215.90mm) P 0.099 63 220 6.0” (152.40mm) P 0.063 39 185 5.0” (127.00mm) P 0.05 30 155 4.25” (107.95mm) P 0.038 25 140 4.0” (101.6mm) P 0.04 20 Free Air Wattage Rating D: OD C: ID L: Length Code for Core Dia. Min. Max. Term. Type Core Dimensions Ohms Free Air Wattage Rating D: OD C: ID L: Length Code for Core Dia. Min. Max. Term. Type Core Dimensions Ohms 190 6.0” (152.40mm) N 0.056 35 150 5.0” (127.00mm) N 0.043 27 125 4.0” (101.60mm) N 0.031 19 140 5.0” (127.00mm) M 0.028 20 105 4.0” (101.60mm) M 0.020 14 100 3.5” (88.90mm) M 0.021 11 90 4.0” (101.60mm) K 0.021 12 46 35 2.0” (50.80mm) K 0.0097 0.11 (14.30mm) (7.95mm) Standard part numbers for 280 series C300KR10E C300KR12E C300KR20E C300KR25E C300KR31E C300KR40E C300KR50E C300KR63E C300K1R0E C300K1R2E C300K1R6E C300K2R0E C300K2R5E C300K3R1E C300K4R0E C300K5R0E C300K6R3E C300K8R0E C300K10RE C300K12RE C300K16RE C300K20RE E300K10RE E300K12RE E300K16RE E300K1R0E E300K1R6E E300K20RE E300K2R0E E300K2R5E E300K3R1E E300K4R0E E300K5R0E E300K6R3E E300K8R0E E300KR10E E300KR12E E300KR16E E300KR20E E300KR25E E300KR31E E300KR40E E300KR50E E300KR63E E300KR80E L D C dimenSionS NOTE: Wattages above 750 watts come with silicone coating.