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《保险丝GB106_UL248_LV_fuses_USA》.pdf
UL 248 AND CSA C22.2 N° 248 LOW
VOLTAGE NORTH AMERICAN FUSES
1. INTRODUCTION
2. INTRODUCTION TO THE UL 248 STANDARD
2.1. The 16 parts of UL 248
2.2. Typical technical data
Typical technical data
2.3. Main characteristics of the main FERRAZ SHAWMUT ranges
2.4. Advantages of Dual-Element construction vs. Single-Element
3. COMPARISON OF THE TIME CURRENT CURVES OF IEC AND UL FUSES
4. PRESENTATION OF SELECTED FERRAZ SHAWMUT RANGES
4.1. Class J
4.1. Class J
4.2. Class L
4.2. Class L
4.3. Class RK1
4.3. Class RK1
4.4. Class T
Class T
4.5. Class CA,CB,CC,G, Midget
4.5.
5. PROTECTION LEVEL
6. STANDARD VOLTAGE SYSTEMS IN NORTH AMERICA (60HZ)
7. SELECTION OF THE FUSE VOLTAGE RATING UN
8. SELECTION OF THE FUSE CURRENT RATING IN
9. HOW TO SELECT FUSES QUICKLY AND EASILY
9.1. Two methods
9.1. Two methods
9.2. Application example : Motor Circuit Protection
9.2.
9.3. Differences between the 3 solutions
9.3.
GB106-UL 248 LV FUSES USA
Charles Mulertt - updated on 2005-01-05 1/12
1. INTRODUCTION
UL 248 is a fuse standard and replaces the former UL 198. UL 512 is a fuse block standard
Above standards establish the dimensional and electrical characteristics of fuses as well as the acceptance
criteria at overload and short circuit levels. There are as well requirements on the labelling of the fuses.
Fuses have “rejection” to prevent installing the wrong voltage and ampere rati
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