C300K20RE [OHMITE]

Fixed Resistor, Wire Wound, 300W, 20ohm, 10% +/-Tol, 400ppm/Cel, Chassis Mount, ROHS COMPLIANT;


型号：	C300K20RE
厂家：	OHMITE MFG. CO.
描述：	Fixed Resistor, Wire Wound, 300W, 20ohm, 10% +/-Tol, 400ppm/Cel, Chassis Mount, ROHS COMPLIANT 电阻器
文件：	总2页 (文件大小：349K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

280 Series

Corrib^®Fixed and Adjustable

Vitreous Enamel Power

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.

F ꢀ at u R ꢀ S

•ꢀAlsoꢀavailableꢀinꢀCentohmꢀorꢀSiliconeꢀcoating.ꢀ

Consult Ohmite.

•ꢀRibbedꢀconstructionꢀaidsꢀinꢀrapidꢀcooling.

•ꢀDesignedꢀforꢀequipmentꢀrequiringꢀlowꢀresistanceꢀ

loads at low ohmic values and high current capac-

ity.

•ꢀEspeciallyꢀconstructedꢀforꢀmotorꢀstarting,ꢀdynamicꢀ

braking, etc.

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.

•ꢀRoHSꢀcompliantꢀproductꢀavailable.ꢀAddꢀ“E”ꢀsuffixꢀtoꢀ

part number to specify.

chaRactꢀRꢁStꢁcS

RꢀSꢁStoR haRdwaRꢀ

Thru Bolts Mounting Brackets for

300 Watt Corrib

Lugs for 300 Watt

Adjustable Corrib

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

Coating

Includes two each bracket, bolt,

washers (centering, mica, lock) and

nut. Note: Single unit mounting

contains one each bolt and nut; two

Part No.

Res. Part No. Res.

1974-A 0.40

¹/16 wire 0.50

0.63

1974-B 0.10

¹/8 wire 0.12

0.16

Tubular Ceramic

Core

1.00

0.20

Tinned lug with hole. RoHS solder composition

is 96% Sn, 3.5% Ag, 0.5% Cu

Terminals

1.50

0.25

each all washers.

1.60

0.31

Moun.

Derat.

2.00

0.80

Part No.

Slotted Elongated

No. of

Resistors

2.50

1.20

Supplied with adjustable 300 watt models. Part

No. 1974-A or 1974-B

Adjustable Lug

3.10

6110-81/2 6126-P-81/2

100%

83%

80%

4.00

5.00

6127-P-81/2

6128-P-81/2

6129-P-81/2

6.30

Max. 63Ω for 300W version

±10% (K)

Resistance

Tolerance

Power rating

Derating

8.00

10.00

12.00

16.00

20.00

25.00

30.00

48.00

50.00

Based on 25°C free air rating

Linearly from 100% @ +25°C to 0% @ +400°C

10 times rated wattage for 5 seconds

±400 ppm/°C

Overload

Temperature

coefficient

1000 VAC measured from terminal to mounting

bracket

Dielectric with-

standing voltage

use the formula √P/R

To calculate

max. amps

(continued)

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115

1000ꢀ (63.5mm)ꢀ

(44.45mm)ꢀ 15.0”ꢀ(381.00mm)ꢀ

ꢀ 215ꢀ (25.40mm)ꢀ (15.88mm)ꢀ

1500ꢀ

2.50”ꢀꢀ

1.75”ꢀꢀ

20.0”ꢀ(508.00mm)ꢀ

Sꢀ

0.56ꢀ 358ꢀ 45

0.41ꢀ 258

ꢀ 315ꢀ

1.00”ꢀꢀ

0.625”ꢀꢀ

10.0”ꢀ(254.00mm)ꢀ

7.0”ꢀ(177.60mm)ꢀ

6.0”ꢀ(152.40mm)ꢀ

5.0”ꢀ(127.00mm)ꢀ

4.0”ꢀ(101.60mm)ꢀ

Nꢀ

0.11ꢀ 67ꢀ

0.068ꢀ 43

0.056ꢀ 35

0.043ꢀ 27

0.031ꢀ 19

280 Series

Corrib^®Fixed and Adjustable

Vitreous Enamel Power

dꢁmꢀnSꢁonS

Core and Terminal Selection for Made to Order Type

Code

for

Code

for

Core

Dia.

Free Air

Wattage

Free Air

Wattage

Rating D: OD

Core Dimensions

Term.

Type

Term.

Type

Core

Dia.

Ohms

Min. Max.

Ohms

Min. Max.

Rating D: OD

C: ID

L: Length

C: ID

L: Length

ꢀ 750ꢀ

ꢀ 380ꢀ

ꢀ

12.0”ꢀ(304.80mm)ꢀ

6.0”ꢀ(152.40mm)ꢀ

0.31ꢀ 198

0.13ꢀ 78

ꢀ 190ꢀ

ꢀ 150ꢀ

ꢀ 125ꢀ

ꢀ

ꢀ 550ꢀ

1.625”ꢀꢀ

1.125”ꢀꢀ

11.75”ꢀ(298.45mm)ꢀ

Rꢀ

0.21ꢀ 133ꢀ 45

0.19ꢀ 117

0.14ꢀ 91

ꢀ 500ꢀ (41.28mm)ꢀ (28.58mm)ꢀ 10.50”ꢀ(266.70mm)ꢀ

ꢀ 180ꢀ

0.75”ꢀꢀ

0.50”ꢀꢀ

6.5”ꢀ(165.10mm)ꢀ

6.0”ꢀ(152.40mm)ꢀ

5.0”ꢀ(127.00mm)ꢀ

4.0”ꢀ(101.60mm)ꢀ

3.5”ꢀ(88.90mm)ꢀ

Mꢀ

0.031ꢀ 29ꢀ

0.038ꢀ 26

0.028ꢀ 20

0.020ꢀ 14

0.021ꢀ 11

ꢀ 400ꢀ

ꢀ 270ꢀ

ꢀ

8.5”ꢀ(215.90mm)ꢀ

5.0”ꢀ(127.00mm)ꢀ

ꢀ 160ꢀ (19.05mm)ꢀ (12.70mm)ꢀ

ꢀ 140ꢀ

ꢀ 105ꢀ

ꢀ 100ꢀ

ꢀ

1.50”ꢀꢀ

(38.10mm)

1.125”ꢀꢀ

(28.58mm)

Qꢀ

0.065ꢀ 41ꢀ 45

ꢀ 395ꢀ

1.125”ꢀꢀ

0.75”ꢀꢀ

11.25”ꢀ(285.75mm)ꢀ

Pꢀ

0.14ꢀ 87ꢀ 45

0.13ꢀ 80

0.099ꢀ 63

0.063ꢀ 39

0.05ꢀ 30

0.038ꢀ 25

0.04ꢀ 20

ꢀ 135ꢀ

0.563”ꢀꢀ

0.313”ꢀꢀ

6.0”ꢀ(152.40mm)ꢀ

5.0”ꢀ(127.00mm)ꢀ

4.0”ꢀ(101.60mm)ꢀ

2.0”ꢀ(50.80mm)ꢀ

Kꢀ

0.028ꢀ 21ꢀ

0.029ꢀ 16

0.021ꢀ 12ꢀ

0.0097ꢀ 0.11

ꢀ 375ꢀ (28.58mm)ꢀ (19.05mm)ꢀ 10.5”ꢀ(266.70mm)ꢀ

ꢀ 110ꢀ (14.30mm)ꢀ

(7.95mm)ꢀ

ꢀ 300ꢀ

ꢀ 220ꢀ

ꢀ 185ꢀ

ꢀ 155ꢀ

ꢀ 140ꢀ

ꢀ

8.5”ꢀ(215.90mm)ꢀ

6.0”ꢀ(152.40mm)ꢀ

5.0”ꢀ(127.00mm)ꢀ

4.25”ꢀ(107.95mm)ꢀ

4.0”ꢀ(101.6mm)ꢀ

ꢀ

90ꢀ

35ꢀ

ꢀ

35ꢀ

0.563”ꢀꢀ

(14.30mm)

0.313”ꢀꢀ

(7.95mm)

2.0”ꢀ(50.80mm)ꢀ

Kꢀ

0.12ꢀ

5.6ꢀ

oRdꢀRꢁng ꢁnFoRmatꢁon

Standard

Made-to-order

Coating

See website for

custom core info

Blank = Vitreous

C = Centohm

S = Silicone

RoHS Compliant

Series

230 = Adjustable

280 = Fixed

Wattage &

Core Code

See “Core and

Terminal Type Ohms

Tolerance

Series Wattage Tolerance Ohms

See “Resistor

Example:

F = 1%

C = Fixed

K = 10% example:

1R0 = 1Ω

E = Adjustable

Terminals for

R0200 = 0.02 7 H= 3%

250 = 250Ω

480 = Silicone fixed Terminal Selection” Tubular Cores” R2000 = 0.2 7 J = 5%

680 = Centohm fixed

1K0 = 1,000Ω

25K = 25,000Ω

25K5 = 25,500Ω

2R500 = 2.5 7 K = 10% (std.)

10R00 = 10 7

Standard part numbers for 280 series

NOTE: Wattages above

750 watts come with

silicone coating.

C300KR10E C300K2R0E E300K10RE E300K6R3E

C300KR12E C300K2R5E E300K12RE E300K8R0E

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

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116

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