UL 248-4:2000 pdf download Low-Voltage Fuses – Part 4: Class CC Fuses
General
NOTE-
This Part is intended to be read together with the Standard for Low-Voltage Fuses – Part 1: General Requirements, hereateirelered to as Part 1. The numbering of the Clauses in this Part corresponds to like numbered Clauses in Part 1. The requirementsof Part 1 apply unless modified by this Part. For Clauses not shown below, refer to the Standard for Low-Voltage Fuses — Part 1:General ReguirementsNMX-J-009/248/4-2000-ANCE CSA C22 2 No248.1 UL 248-1
1.1 Scope
This Part applies to Class CC fuses rated 30 A or less and 600 V ac. DC ratings are optional.
4 Classification
Class CC fuses are non-renewable and current limiting, with an interrupting rating of 200,000 A. Class CCfuses have one body size.Time-delay ratings are optional.
5 Characteristics
5.2 Voltage rating
For AC, the rating shall be 600 V ac.
For DC, the voltage rating may be different from the AC rating!
5.3 Current rating
30 A or less.
5.5 Interrupting rating
For AC -200,000 A
For DC, the preferred ratings are 10,000, 20,000, 50,000, 100,000, 150,000, or 200,000 A.
5.6 Peak let-through current and clearing I 2 t characteristics
Maximum values of peak let-through current and clearing I 2 t are given in Table A.
7 Construction
7.1 Dimensions
Fuse dimensions are shown in Figure A.
UL 248-4:2000 pdf download
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