C300KR10E OHMITE | Alldatasheet

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Technical content

Standard part numberS for 280 SerieS

280 Series

Corrib® Fixed and Adjustable Vitreous Enamel Power FEA turEs

  • Also available in low cost Centohm or Silicone coating. Consult Ohmite.
  • Ribbed construction aids in rapid cooling.
  • Designed for equipment requir- ing low resistance loads at low ohmic values and high current capacity.
  • Especially constructed for motor starting, dynamic braking, etc.
  • RoHS compliant product avail- able. Add “E” suffix to part num- ber to specify. sPECiFiCA tions Material 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. Electrical Tolerance: ±10% (K) Power rating: Based on 25°C free air rating. Derating: Linearly from 100% @ +25°C to 0% @ +400°C. 0.02 –––R02E 0.04 –––R04E 0.06 –––R06E 0.08 –––R08E 0.15 –––R15E 0.16 –––R16E  0.3 –––R30E 0.6 –––R60E 0.8 –––R80E  1.2 –––1R2E  1.25 –––1R25E 100.0 –––100E *Substitute “C” in prefix with “E” for adjustable versions.  = Standard values; check availability using the worldwide inventory search at www.ohmite.com No. of Moun. Part No. Res- Derat. Slotted Elongated istors % 6110-81/2 6126-P-8 1/2 1 100% Lugs for 300 Watt Adjustable Corrib Part Resis- Part Resis- No. tance No. tance 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 RESiSTOR hARDWARE other Available sizes (Partial List) Core Core Min. Max. Prefix* Wattage Length o.D. ohms ohms C90 90 4.0” 0.563” 0.021 12 C100 100 3.5” 0.75” 0.021 11 C110 110 5.0” 0.563” 0.029 16 C135 135 6.0” 0.563” 0.028 21 C150 150 5.0” 1.0” 0.043 27 C160 160 6.0” 0.75” 0.038 26 C180 180 6.5” 0.75” 0.031 29 C190 190 6.0” 1.0” 0.056 35 C215 215 7.0” 1.0” 0.068 43 C220 220 6.0” 1.125” 0.063 39 C270 270 5.0” 1.5” 0.065 41 C375 375 10.5” 1.125” 0.130 80 C500 500 10.5” 1.625” 0.190 117 C750 750 12.0” 2.5” 0.310 198 C1000 1000 15.0” 2.5” 0.410 258 C1500 1500 20.0” 2.5” 0.560 358 1.125 in. 28.58 mm 0.500 in. ±.030 12.7 mm ±.79 Diam. 8.5 in. 215.90 mm 0.25 in. 6.35 mm 0.75 in. 19.05 mm 0.032 in. 0.813 mm min. 0.75 in. 19.05 mm Fixed/Adjustable 300 watt* * for values over 0.16Ω, terminal dimensions same as 35 watt at above. 0.563 in. 14.288 mm 2.0 in. 50.80 mm 0.375 in. 9.525 mm 0.094 in. 2.381 mm 0.625 in. 15.88 mm Diam. 0.173 in. 4.394 mm 0.3125 in. 7.938 mm Fixed 35 watt Corrib® resistors are ideal for applications involving high currents at very low resis- tance 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 appli- cations. Special order units are available to accommodate up to 1500 watts. Corribs ® are manufactured with corrugated resistive wire. To accelerate cooling, the wire is securely fused to the ceram- ic core by the protective vitre- ous enamel coating to improve durability. Corrib resistors are hollow-core units which can be securely fastened to chassis surfaces with thru bolts and brackets. Part no. Prefix  Suffix Wattage ohmic value C35K ––– 35 C300K–––300 E300K–––300 (Adjustable) Part no. Prefix  Suffix Wattage ohmic value C35K ––– 35 C300K–––300 E300K–––300 (Adjustable) Includes 2 each bracket, bolt, washers (centering, mica, lock) and nut. Note: Single unit mounting contains 1 each bolt and nut; 2 each all Washers. Thru Bolts Mounting Brackets for 300 Watt Corrib ordering info made-to-order partS See website for custom core info Tolerance F= 1% H= 3% J= 5% K= 10% (std.) Ohms Example: R0200 = 0.02 Ω R2000 = 0.2 Ω 2R500 = 2.5 Ω 10R00 = 10 Ω Series 280 = Fixed 230 = Adjustable Wattage & Core Code See “Core and Terminal Selection” Terminal Type See “Resistor Terminals for Tubular Cores” Tolerance K= 10% Ohms example: 1R0 = 1 Ω 250 = 250 Ω 1K0 = 1,000 Ω 25K = 25,000 Ω 25K5 = 25,500 Ω RoHS Compliant Series C = Fixed E = Adjustable Wattage Coating Blank =V itreous C= Centohm S= Silicone Overload: 10 times rated wattage for 5 seconds. Temperature coefficient: ±400 ppm/°C. Dielectric withstanding voltage:

1000 VAC measured from termi-

nal to mounting bracket. To calculate max. amps: use the formula √P/R