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.
F E A ꢀ ꢁ ꢂ E ꢃ
• 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.
280 Series
®
Corrib Fixed and Adjustable
Vitreous Enamel Power
Fixed
35 watt
0.375 in.
0.094 in.
2.381 mm
9.525 mm
Diam.
0.173 in.
4.394 mm
0.563 in.
14.288 mm
0.625 in.
15.88 mm
2.0 in.
50.80 mm
0.3125 in.
7.938 mm
Fixed/Adjustable
300 watt*
ꢃ P E C ꢄ F ꢄ C A ꢀ ꢄ ꢅ ꢆ ꢃ
Material
Diam.
0.196 in. +.015/-.006
4.979 mm +.381/-.153
0.25 in.
6.35 mm
0.500 in. ±.030
12.7 mm ±.79
0.032 in.
0.813 mm
min.
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.
1.125 in.
28.58 mm
0.75 in.
19.05 mm
8.5 in.
215.90 mm
0.75 in.
19.05 mm
* for values over 0.16Ω, terminal dimensions same as 35 watt at above.
o r d e r i n g i n f o
Overload: 10 times rated wattage
Coating
Blank = Vitreous
RESꢀSTOR ꢁARDWARE
for 5 seconds.
C = Centohm
S = Silicone
RoHS Compliant
Thru Bolts Mounting Brackets
Temperature coefficient:
for 300 Watt Corrib
±400 ppm/°C.
Electrical
Tolerance: ±10% (K)
Power rating: Based on
25°C free air rating.
Derating: Linearly from
100% @ +25°C to 0%
@ +400°C.
� ꢀ ꢁ ꢁ ꢂ ꢃ ꢄ ꢁ ꢅ
Series Wattage Tolerance Ohms
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.
Dielectric withstanding voltage:
1000 VAC measured from termi-
nal to mounting bracket.
To calculate max. amps: use the
formula √P/R
C = Fixed
E = Adjustable
K = 10% example:
1R0 = 1 Ω
250 = 250 Ω
1K0 = 1,000 Ω
25K = 25,000 Ω
25K5 = 25,500 Ω
No. of Moun.
Part No.
Res- Derat.
Slotted Elongated istors
%
m a d e - t o - o r d e r p a r t S
1
1
6110-8 /2 6126-P-8 /2
1
1
2
3
4
100%
83%
80%
80%
-
-
-
6127-P-8 /2
� ꢀ ꢁ ꢂ ꢁ ꢁ ꢃ ꢄ ꢅ ꢆ � ꢇ ꢁ ꢁ ꢈ
1
6128-P-8 /2
1
6129-P-8 /2
Series
Wattage &
Core Code
Terminal Type Ohms
Tolerance
See website for
custom core info
280 = Fixed
See “Resistor
Terminals for
Example:
F = 1%
230 = Adjustable See “Core and
R0200 = 0.02 Ω H= 3%
Lugs for 300 Watt
Adjustable Corrib
Terminal Selection” Tubular Cores” R2000 = 0.2 Ω J = 5%
2R500 = 2.5 Ω K = 10% (std.)
10R00 = 10 Ω
Part
No.
Resis-
tance
Part
No.
Resis-
tance
1974-A 0.40
1/16 wire 0.50
0.63
1974-B 0.10
1/8 wire 0.12
0.16
S ta 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
Wattage
Wattage
ꢅther Available ꢃizes (Partial List)
1.00
0.20
Core
Core
ꢅ.D.
Min.
Max.
1.50
0.25
1.60
0.31
Prefix* Wattage Length
ꢅhms
ꢅhms
Part ꢆo.
Prefix
Suffix
Part ꢆo.
Prefix
Suffix
2.00
0.80
C90
90
100
110
135
150
160
180
190
215
220
270
375
500
750
1000
1500
4.0”
3.5”
5.0”
6.0”
5.0”
6.0”
6.5”
6.0”
7.0”
0.563”
0.75”
0.563”
0.563”
1.0”
0.75”
0.75”
1.0”
1.0”
1.125”
1.5”
1.125”
1.625”
2.5”
0.021
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
12
11
16
21
27
26
29
35
43
39
41
80
117
198
258
358
2.50
1.20
C100
C110
C135
C150
C160
C180
C190
C215
C220
C270
C375
C500
C750
C1000
C1500
3.10
4.00
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
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
10.0 –––10RE
12.0 –––12RE
16.0 –––16RE
20.0 –––20RE
100.0 –––100E
5.00
6.30
8.00
10.00
12.00
16.00
20.00
25.00
30.00
48.00
50.00
6.0”
5.0”
10.5”
10.5”
12.0”
15.0”
20.0”
2.5”
2.5”
= Standard values; check availability
using the worldwide inventory
search at www.ohmite.com
*Substitute “C” in
prefix with “E” for
adjustable versions.
Ohmite Mfg. Co.
1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com
35
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