Corrib
®
Fixed and Adjustable
Vitreous Enamel Power
280 Series
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.
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
Dielectric with-
standing voltage
To calculate
max. amps
±400 ppm/°C
1000 VAC measured from terminal to mounting
bracket
use the formula √P/R
F e at u R e S
• 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.
ReSiStoR haRdwaRe
Thru Bolts Mounting Brackets for
Lugs for 300 Watt
300 Watt Corrib
Adjustable Corrib
Includes two each bracket, bolt,
Part No.
Res. Part No.
washers (centering, mica, lock) and
1974-A
0.40
1974-B
1
/
16
wire
1
/
8
wire
0.50
nut. Note: Single unit mounting
0.63
contains one each bolt and nut; two
1.00
1.50
each all washers.
Part No.
Slotted
Elongated
6110-81/2
-
-
-
6126-P-81/2
6127-P-81/2
6128-P-81/2
6129-P-81/2
No. of
Resistors
1
2
3
4
Moun.
Derat.
%
100%
83%
80%
80%
1.60
2.00
2.50
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
Res.
0.10
0.12
0.16
0.20
0.25
0.31
0.80
1.20
(continued)
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115
Corrib
®
Fixed and Adjustable
Vitreous Enamel Power
280 Series
dimenSionS
D
L
C
Core and Terminal Selection for Made to Order Type
Free Air
Wattage
Rating D: OD
1
500
1
000
750
380
550
500
400
270
395
375
300
220
185
155
140
2.50”
(63.5mm)
1.625”
(41.28mm)
1.50”
(38.10mm)
1.125”
(28.58mm)
Core Dimensions
C: ID
1.75”
(44.45mm)
1.125”
(28.58mm)
1.125”
(28.58mm)
0.75”
(19.05mm)
L: Length
20.0” (508.00mm)
15.0” (381.00mm)
12.0” (304.80mm)
6.0” (152.40mm)
11.75” (298.45mm)
10.50” (266.70mm)
8.5” (215.90mm)
5.0” (127.00mm)
11.25” (285.75mm)
10.5” (266.70mm)
8.5” (215.90mm)
6.0” (152.40mm)
5.0” (127.00mm)
4.25” (107.95mm)
4.0” (101.6mm)
Code
for
Term.
Core Ohms
Dia. Min. Max. Type
S
S
S
S
R
R
R
Q
P
P
P
P
P
P
P
0.56 358
0.41 258
0.31 198
0.13 78
0.21 133
0.19 117
0.14 91
0.065 41
0.14
0.13
0.099
0.063
0.05
0.038
0.04
87
80
63
39
30
25
20
45
Free Air
Wattage
Rating D: OD
315
215
190
150
125
180
160
140
105
100
135
110
90
35
35
1.00”
(25.40mm)
0.75”
(19.05mm)
0.563”
(14.30mm)
0.563”
(14.30mm)
Core Dimensions
C: ID
0.625”
(15.88mm)
0.50”
(12.70mm)
0.313”
(7.95mm)
0.313”
(7.95mm)
L: Length
10.0” (254.00mm)
7.0” (177.60mm)
6.0” (152.40mm)
5.0” (127.00mm)
4.0” (101.60mm)
6.5” (165.10mm)
6.0” (152.40mm)
5.0” (127.00mm)
4.0” (101.60mm)
3.5” (88.90mm)
6.0” (152.40mm)
5.0” (127.00mm)
4.0” (101.60mm)
2.0” (50.80mm)
2.0” (50.80mm)
Code
for
Core Ohms
Dia. Min. Max.
N
N
N
N
N
M
M
M
M
M
K
K
K
K
K
0.11
0.068
0.056
0.043
0.031
0.031
0.038
0.028
0.020
0.021
0.028
0.029
0.021
0.0097
0.12
67
43
35
27
19
29
26
20
14
11
21
16
12
0.11
5.6
Term.
Type
45
45
45
45
45
46
46
40
o R d e R i n g i n F o R m at i o n
Standard
Coating
Blank = Vitreous
C = Centohm
S = Silicone
RoHS Compliant
Made-to-order
See website for
custom core info
Series Wattage Tolerance Ohms
K = 10%
example:
C = Fixed
1R0 = 1Ω
E = Adjustable
250 = 250Ω
1K0 = 1,000Ω
25K = 25,000Ω
25K5 = 25,500Ω
Series
Wattage &
230 = Adjustable
Core Code
280 = Fixed
See “Core and
480 = Silicone fixed Terminal Selection”
680 = Centohm fixed
Terminal Type
See “Resistor
Terminals for
Tubular Cores”
Ohms
Example:
R0200 = 0.02
R2000 = 0.2
2R500 = 2.5
10R00 = 10
Tolerance
F = 1%
H = 3%
J = 5%
K = 10%
(std.)
NOTE:
Wattages above
750 watts come with
silicone coating.
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
116
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DSP 与 ARM 处理器
