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Current Ratings for Silicone Cables and Wires

Heat-resistance at an ambient temperature up to 150°C
Nominal Cross-section mm² Group 1 Group 2 Group 3
current carrying capacity A protective fuse A current carrying capacity A protective fuse A current carrying capacity A protective fuse A
0.25 2.8 - - - 5 -
0.5 6 - 7 - 10 -
0.75 9 6 12 6 15 10
1.0 12 10 15 10 19 20
1.5 16 16 18 16 24 25
2.5 21 20 26 25 32 35
4 28 35 34 35 42 50
6 36 35 44 50 54 63
10 49 50 61 63 73 80
16 65 63 82 80 98 100
25 85 83 108 100 129 125
35 105 100 135 - 158 160
50 140 125 168 - 198 200
70 175 160 207 - 245 250
95 210 200 250 - 292 300
120 250 250 292 - 344 335
150 - - 335 - 391 -
185 - - 382 - 448 -
240 - - 453 - 528 -
300 - - 523 - 608 -

Group 1 - One or more single conductor cables laid in duct.
Group 2 - Multi conductor cables, flexible cables installed in open air or ventilated conduits
Group 3 - Single conductor cables installed in open air with a spacing at least equal to cable diameter

Power ratings for ambient temperature over 150°C
The following conversion factors are valid:
Temperature Current Carrying Capacity Values
up to 150°C 100%
150-155°C 91%
155-160°C 82%
160-165°C 71%
165-170°C 58%
170-175°C 41%
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Sealcon is the Exclusive Importer of HUMMEL products. We offer over 6,000 different Types and Sizes of RoHS Compliant Liquid Tight Strain Relief Fittings, Cord Grips, Cable Glands, Circular Connectors, Conduit System, Industrial Enclosures and Other Related Cable Management Products which are rated the best in the industry.
7374 S. Eagle Street
Centennial, CO 80112-4221 USA
Toll Free: 800-677-8942 / 303-680-5159 FAX: 303-680-5344
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