sc300kr80e Ohmite Mfg. Co., sc300kr80e Datasheet

sc300kr80e

Manufacturer Part Number

sc300kr80e

Description

Corrib Fixed And Adjustable Vitreous Enamel Power Resistors

Manufacturer

Ohmite Mfg. Co.

Datasheet

1.SC300KR80E.pdf (1 pages)

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Corrib

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.

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.

Ohmite Mfg. Co.

0.02 –––R02E

0.04 –––R04E

0.06 –––R06E

0.08 –––R08E

0.1 –––R10E

0.12 –––R12E

0.15 –––R15E

0.16 –––R16E

0.2 –––R20E

0.25 –––R25E

0.3 –––R30E

0.31 –––R31E

0.4 –––R40E

0.5 –––R50E

0.6 –––R60E

0.63 –––R63E

Coating

Blank = Vitreous

Corribs

Series

280 = Fixed

230 = Adjustable

Series

C = Fixed

E = Adjustable

C = Centohm

� � � � � � � � �

Part no.

Prefix 

Suffix

S = Silicone

resistors are ideal for

� � � � � � � � � � � � � � �

o r d e r i n g i n f o

Wattage

are manufactured

Wattage &

Core Code

See “Core and

Terminal Selection”

Wattage

Tolerance

K = 10%

1600 Golf Rd., Rolling Meadows, IL 60008 • 1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com

 



RoHS Compliant

S t a n d a r d p a r t n u m b e r S f o r 2 8 0 S e r i e S

Ohms

example:

1R0 = 1 Ω

250 = 250 Ω

1K0 = 1,000 Ω

25K = 25,000 Ω

25K5 = 25,500 Ω

100.0 –––100E

10.0 –––10RE

12.0 –––12RE

16.0 –––16RE

20.0 –––20RE

0.8 –––R80E

1.0 –––1R0E

1.2 –––1R2E

1.25 –––1R25E

1.6 –––1R6E

2.0 –––2R0E

2.5 –––2R5E

3.1 –––3R1E

4.0 –––4R0E

5.0 –––5R0E

6.3 –––6R3E

8.0 –––8R0E

Terminal Type

See “Resistor

Terminals for

Tubular Cores”

Part no.

Prefix 

Suffix

F E A t u r E s

• Also available in low cost

• Ribbed construction aids in rapid

• Designed for equipment requir-

• Especially constructed for motor

• RoHS compliant product avail-

s P E C i F i C A t i o n s

Material

Coating: Lead free vitreous

Core: Tubular Ceramic.

Terminals: Tinned lug with hole.

m a d e - t o - o r d e r p a r t S

Centohm or Silicone coating.

Consult Ohmite.

cooling.

ing low resistance loads at low

ohmic values and high current

capacity.

starting, dynamic braking, etc.

able. Add “E” suffix to part num-

ber to specify.

enamel except for extreme low

resistance 35 watt models, and

very large models (750 watts

and up), which are supplied in

Silicone Ceramic.

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.

Ohms

Example:

R0200 = 0.02 Ω

R2000 = 0.2 Ω

2R500 = 2.5 Ω

10R00 = 10 Ω

Wattage

 



 



*Substitute “C” in

prefix with “E” for

adjustable versions.

Prefix*

C90

C100

C110

C135

C150

C160

C180

C190

C215

C220

C270

C375

C500

C750

C1000

C1500

Tolerance

F = 1%

H = 3%

J = 5%

K = 10% (std.)

Wattage

1000

1500

other Available sizes (Partial List)

100

110

135

150

160

180

190

215

220

270

375

500

750

Length

10.5”

12.0”

15.0”

20.0”

Overload: 10 times rated wattage

Temperature coefficient:

Dielectric withstanding voltage:

To calculate max. amps: use the

 = Standard values; check availability

Core

Fixed

35 watt

Fixed/Adjustable

300 watt*

4.0”

3.5”

5.0”

6.0”

5.0”

6.0”

6.5”

6.0”

7.0”

6.0”

5.0”

for 5 seconds.

±400 ppm/°C.

1000 VAC measured from termi-

nal to mounting bracket.

formula √P/R

* for values over 0.16 Ω , terminal dimensions same as 35 watt at above.

using the worldwide inventory

search at www.ohmite.com

28.58 mm

custom core info

4.394 mm

See website for

0.500 in. ±.030

1.125 in.

12.7 mm ±.79

0.173 in.

Core

o.D.

0.563”

0.75”

0.563”

1.0”

0.75”

1.0”

1.125”

1.5”

1.125”

1.625”

2.5”

14.288 mm

Diam.

0.563 in.

ohms

0.021

0.029

0.028

0.043

0.038

0.031

0.056

0.068

0.063

0.065

0.130

0.190

0.310

0.410

0.560

Min.

9.525 mm

0.375 in.

Diam.

0.196 in. +.015/-.006

4.979 mm +.381/-.153

ohms

Max.

117

198

258

358

50.80 mm

215.90 mm

2.0 in.

8.5 in.

Corrib

2.381 mm

0.094 in.

Vitreous Enamel Power

RESiSTOR hARDWARE

Thru Bolts Mounting Brackets

for 300 Watt Corrib

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.

Lugs for 300 Watt

Adjustable Corrib

6110-8

Part

1974-A

Slotted

No.

280 Series

Fixed and Adjustable

wire

0.625 in.

15.88 mm

Part No.

Resis-

tance

10.00

12.00

16.00

20.00

25.00

30.00

48.00

50.00

0.25 in.

6.35 mm

6126-P-8

6127-P-8

6128-P-8

6129-P-8

0.40

0.50

0.63

1.00

1.50

1.60

2.00

2.50

3.10

4.00

5.00

6.30

8.00

Elongated istors

0.75 in.

19.05 mm

0.3125 in.

7.938 mm

1974-B

Part

No.

wire

No. of Moun.

Res-

19.05 mm

0.813 mm

0.032 in.

0.75 in.

Resis-

tance

0.10

0.12

0.16

0.20

0.25

0.31

0.80

1.20

min.

Derat.

100%

83%

80%

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