Danfoss VLT AutomationDrive FC 360 Quick Manual

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8.3 FusesUse fuses and/or circuit breakers on the supply side toprotect service personnel and equipment from injuries anddamage if there is component breakdown inside thefrequency converter (first fault).Branch circuit protectionProtect all branch circuits in an installation, switchgear, andmachines against short circuit and overcurrent accordingto national/international regulations.NOTICEThe recommendations do not cover branch circuitprotection for UL.Table 8.4 lists the recommended fuses that have beentested.WARNINGPERSONAL INJURY AND EQUIPMENT DAMAGE RISKMalfunction or failing to follow the recommendationsmay result in personal risk and damage to the frequencyconverter and other equipment.• Select fuses according to recommendations.Possible damages can be limited to be insidethe frequency converter.NOTICEUsing fuses or circuit breakers is mandatory to ensurecompliance with IEC 60364 for CE.Danfoss recommends using the fuses in Table 8.4 on acircuit capable of delivering 100000 Arms (symmetrical),380–480 V depending on the frequency converter voltagerating. With the proper fusing, the frequency convertershort circuit current rating (SCCR) is 100000 Arms.EnclosuresizePower [kW (hp)] CE compliance fuseJ10.37–1.1 (0.5–1.5)gG-101.5 (2)2.2 (3)J23.0 (4)gG-254.0 (5.5)5.5 (7.5)J3 7.5 (10) gG-32J4 11–15 (15–20) gG-50J5 18.5 (25) gG-8022 (30)J630 (40)gG-12537 (50)45 (60)J7 55 (75) aR-25075 (100)Table 8.4 CE Fuse, 380–480 V, Enclosure Sizes J1–J7Specifications VLT® AutomationDrive FC 36060 Danfoss A/S © 03/2017 All rights reserved. MG06A70288