Core:
Tubular Ceramic.
terminals:
Tinned lug with hole.
• Also available in low cost
RoHS solder composition is 96%
Centohm or Silicone coating.
Sn, 3.5% Ag, 0.5% Cu
®
Consult Ohmite.
Adjustable Lug:
Supplied with
• Ribbed construction aids in rapid
adjustable 300 watt models. Part
cooling.
No. 1974-A or 1974-B.
• Designed for equipment requir-
Fixed/Adjustable
Fixed
Electrical
ing low resistance loads at low
300 watt*
35 watt
Diam.
Resistance:
Max. 63Ω for 300W
ohmic values
+.015/-.006
0.196 in.
and high current
0.25 in.
version
0.500 in. .030 4.979 mm +.381/-.153
0.032 in.
0.375 in.
0.094 in.
capacity.
6.35 mm
12.7 mm
•
.79
0.813 mm
tolerance:
±10% (K)
2.381 mm
Diam. 9.525 mm
Especially constructed for motor
min.
0.173 in.
Power rating:
Based on 25°C free
starting, dynamic braking, etc.
4.394 mm
air rating.
• RoHS compliant product avail-
Derating:
Linearly from
1.125 in.
able. Add “E” suffix to part num-
0.563 in.
100% @ +25°C to 0%
28.58 mm
ber to specify.
0.625 in.
14.288 mm
0.75 in.
15.88 mm
19.05
@ +400°C.
mm
8.5 in.
2.0 in.
Overload:
10 times rated wattage
s P E C i F i C
mm
i o n s
0.75 in.
215.90
A t
0.3125 in.
50.80 mm
for 5
19.05 mm
seconds.
7.938 mm
Material
temperature coefficient:
* for values over 0.16 , terminal dimensions same as 35 watt at left.
Fixed/Adjustable
Coating:
Lead free vitreous
±400 ppm/°C.
300 watt*
Diam.
enamel except for extreme low
Dielectric withstanding voltage:
0.196 in. +.015/-.006
resistance 35 watt models, and
0.500 in. .030 4.979 mm +.381/-.153 0.25 in.
0.032 in.
1000 VAC measured from termi-
6.35 mm
very large models (750 watts
12.7 mm .79
0.813 mm
nal to mounting bracket.
and up), which are supplied in
min.
to calculate max. amps:
use the
Silicone Ceramic.
formula
√P/R
1.125 in.
28.58 mm
0.75 in.
made-to-order partS
m
19.05 mm
8.5 in.
0.75 in.
215.90 mm
0.3125 in.
19.05 mm
7.938 mm
Series
Wattage &
Terminal Type Ohms
Tolerance
280 Series
FEAturEs
Corrib Fixed and Adjustable
Vitreous Enamel Power
* for values over 0.16 , terminal dimensions same as 35 watt at left.
Corrib
®
resistors are ideal for applications involving high currents
See website for
at very low resistance values—as low as 0.1Ω for the 300 Watt
custom core info
unit. These large, heavy-duty resistors are designed to withstand
frequent start-stop cycles characteristic of motor starting, dynam-
ic braking and other similar applications. Special order units
ordering info
are available to accommodate up to 1500 watts.
Coating
Corribs
®
are manufactured with corrugated resistive
Blank = Vitreous
wire. To accelerate cooling, the wire is securely fused to
C = Centohm
RoHS Compliant
S = Silicone
the ceramic core by the protective vitreous enamel coating
to improve durability. Corrib resistors are hollow-core units
½½½½½½½½½
which can be securely fastened to chassis surfaces with thru
Series Wattage Tolerance Ohms
bolts and brackets.
C = Fixed
K = 10%
example:
E = Adjustable
230 = Adjustable
Core Code
See “Resistor
280 = Fixed
See “Core and
Terminals for
480 = Silicone fixed Terminal Selection” Tubular Cores”
680 = Centohm fixed
Example:
R0200 = 0.02
R2000 = 0.2
2R500 = 2.5
10R00 = 10
F=
H=
J=
K=
1%
3%
5%
10%
(std.)
RESiStOR hARDWARE
thru Bolts Mounting Brackets
for 300 Watt Corrib
1R0 = 1
Ω
250 = 250
Ω
1K0 = 1,000
Ω
25K = 25,000
Ω
25K5 = 25,500
Ω
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.
No. of Moun.
Part No.
Res- Derat.
Slotted Elongated istors
%
6110-8
1
/
2
6126-P-8
1
/
2
-
-
-
6127-P-8
1
/
2
6128-P-8
1
/
2
6129-P-8
1
/
2
1
2
3
4
100%
83%
80%
80%
S ta n d a r d pa rt n u m b e r S f o r 2 8 0 S e r i e S
Wattage
C300K–––300
E300K–––300
C35K
–––
35
ohmic value
ohmic value
(Adjustable)
Wattage
C300K–––300
E300K–––300
C35K
–––
35
(Adjustable)
other Available sizes (Partial List)
Prefix*
C90
C100
C110
C135
C150
C160
C180
C190
C215
C220
C270
C375
C500
C750
C1000
C1500
Part no.
Prefix
Suffix
–––R02E
–––R04E
–––R06E
–––R08E
–––R10E
–––R12E
–––R15E
–––R16E
–––R20E
–––R25E
–––R30E
–––R31E
–––R40E
–––R50E
–––R60E
–––R63E
Part no.
Prefix
Suffix
–––R80E
–––1R0E
–––1R2E
–––1R25E
–––1R6E
–––2R0E
–––2R5E
–––3R1E
–––4R0E
–––5R0E
–––6R3E
–––8R0E
–––10RE
–––12RE
–––16RE
–––20RE
–––63RE
†
0.02
0.04
0.06
0.08
0.1
0.12
0.15
0.16
0.2
0.25
0.3
0.31
0.4
0.5
0.6
0.63
0.8
1.0
1.2
1.25
1.6
2.0
2.5
3.1
4.0
5.0
6.3
8.0
10.0
12.0
16.0
20.0
63.0
Wattage
90
100
110
135
150
160
180
190
215
220
270
375
500
750
†
1000
1500
Core
Length
4.0”
3.5”
5.0”
6.0”
5.0”
6.0”
6.5”
6.0”
7.0”
6.0”
5.0”
10.5”
10.5”
12.0”
15.0”
20.0”
Core
o.D.
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”
2.5”
2.5”
Min.
ohms
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
Max.
ohms
12
11
16
21
27
26
29
35
43
39
41
80
117
198
258
358
Lugs for 300 Watt
Adjustable Corrib
Part
No.
1
/
16
Resis-
tance
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
10.00
12.00
16.00
20.00
25.00
30.00
48.00
50.00
Part
No.
1974-B
1
/
8
wire
Resis-
tance
0.10
0.12
0.16
0.20
0.25
0.31
0.80
1.20
1974-A
wire
*Substitute “C” in
= Standard values; check availability
using the worldwide inventory
prefix with “E” for
search at www.ohmite.com
adjustable versions.
† Wattages above 750 watts come with silicone coating.
40
Ohmite Mfg. Co.
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
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