Standard part numbers and availability Made-to-Order Part Numbers Download Datasheet (PDF) Ohm's Law Calculator Mounting hardware Through-Bolt "Dead" Mounting Brackets (PDF)

280 Series

RoHS compliant product available Jan. 2006 Add "E" suffix to part number to specify.

Corrib® resistors are ideal for applications involving high currents at very low resistance values-as low as 0.1 ohm 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 resistive wire. To accelerate cooling, the wire is securely fused to the ceramic core by the protective vitreous enamel coating to improve durability. Corrib resistors are hollow-core units which can be securely fastened to chassis surfaces with thru bolts and brackets.

FEATURES Ribbed construction aids in rapid cooling. Designed for equipment requiring low resistance loads at low ohmic values and high current capacity. Especially constructed for motor starting, dynamic braking, etc. SPECIFICATIONS Material Coating: Lead free vitreous enamel except for extreme low resistance 35 watt models, and very large models (1000 watts and up), which are supplied in Silicone Ceramic. Also available in low-cost Centohm coating; Consult factory. 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. Electrical 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: ±400 ppm/°C. Dielectric withstanding voltage: 1000 VAC measured from terminal to mounting bracket. To calculate max. amps: use the formula

Core and Terminal Selection for Made to Order Tubular Resistors
Through-Bolt "Dead" Mounting Brackets (PDF)

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.

Part No.		No. of Resistors	Mounting Derating %
Slotted	Elongated
6110-8.5	6126-P-8.5	1	100%
--	6127-P-8.5	2	83%
--	6128-P-8.5	3	80%
--	6129-P-8.5	4	80%

Lugs for 300 Watt Adjustable Corrib

Part No.	Resistance
1974-A 1/16 wire	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
1974-B 1/8 wire	0.10 0.12 0.16 0.20 0.25 0.31 0.80 1.20

STANDARD PART NUMBERS FOR STANDARD RESISTANCE VALUES

Match value from "prefix" row with value from "suffix" column to create part number.

Key:
A = Most popular standard values
B = Standard values
C = Non-standard values subject to minimum handling charge per item

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                                      300
     watts--->      35       300  (Adjustable)
     prefix-->    C35K--   C300K--  E300K--
----------------------------------------------
ohms | suffix |    availability (see key)
----------------------------------------------
0.02   ---R02        C
0.04   ---R04        C
0.06   ---R06        C
0.08   ---R08        C
0.1    ---R10        C        A        A
----------------------------------------------
0.12   ---R12                 A        B
0.15   ---R15        C
0.16   ---R16        C                 A
0.2    ---R20        C        B        A
0.25   ---R25        C        B        A
----------------------------------------------
0.3    ---R30        C
0.31   ---R31                 A        A
0.4    ---R40        C        B        B
0.5    ---R50        C        A        A
0.6    ---R60        C
----------------------------------------------
                                      300
     watts--->      35       300  (Adjustable)
     prefix-->    C35K--   C300K--  E300K--
----------------------------------------------
ohms | suffix |    availability (see key)
----------------------------------------------
0.63   ---R63                 B        B
0.8    ---R80        C        C        B
1.0    ---1R0        C        B        A
1.2    ---1R2                 A        C
1.25   ---1R25       C
----------------------------------------------
1.6    ---1R6                 A        B
2.0    ---2R0                 A        B
2.5    ---2R5                 B        B
3.1    ---3R1                 A        A
4.0    ---4R0                 A        A
----------------------------------------------
5.0    ---5R0                 B        A
6.3    ---6R3                 A        A
8.0    ---8R0                 A        A
10.0   ---10R                 A        A
12.0   ---12R                 A        A
----------------------------------------------
                                      300
     watts--->      35       300  (Adjustable)
     prefix-->    C35K--   C300K--  E300K--
----------------------------------------------
ohms | suffix |    availability (see key)
----------------------------------------------
16.0   ---16R                 A        A
20.0   ---20R                 A        A
----------------------------------------------

Other Available Sizes (Partial List)

                     Core     Core      Min.       Max.
Prefix*   Wattage    Length    O.D.     Ohms       Ohms
--------------------------------------------------------
C90          90      4.0"    0.563"     0.021        12
C100        100      3.5"     0.75"     0.021        11
C110        110      5.0"    0.563"     0.029        16
C135        135      6.0"    0.563"     0.028        21
C150        150      5.0"      1.0"     0.043        27
C160        160      6.0"     0.75"     0.038        26
C180        180      6.5"     0.75"     0.031        29
C190        190      6.0"      1.0"     0.056        35
C215        215      7.0"      1.0"     0.068        43
C220        220      6.0"    1.125"     0.063        39
C270        270      5.0"      1.5"     0.065        41
C375        375     10.5"    1.125"     0.130        80
C500        500     10.5"    1.625"     0.190       117
C750        750     12.0"      2.5"     0.310       198
C1000      1000     15.0"      2.5"     0.410       258
C1500      1500     20.0"      2.5"     0.560       358
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