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Ind Facilities & Factories - Facility: Safety and Security Systems
Non current limiting
Protect lighting, heating and other circuits not subject to temporary surges and where available short circuit currents are relatively low
NON 1-time fuses do not have any appreciable degree of time delay and thus should not be specified in circuits where large transients or motor overloads occur
Use Bussmann advanced protection Fusetron™ FRN-R or ultimate protection Low-Peak™ LPN-RK dual element, time delay fuses
For general purpose circuits, size at amp rating of circuit
For motor circuits, size at 300% to 400% according to the NEC motor ampacity tables 430.247 to 430.250 per 430.6(A)(1)
50 kA at 250 VAC RMS sym