Fuse Characteristics: IEC_aR
Fuse time-current characteristics, voltage ratings, interrupting capacity, and current-limiting classification by fuse class. Covers UL 248 classes (J, RK1, RK5, CC, T, L, G, H, K) and IEC 60269 types (gG, gM, aR, aM). Includes melting and clearing I2t let-through energy ranges, peak let-through current, conventional fusing/non-fusing current factors, rejection feature type, and application guidance.
| fuse class | record id | amp rating max (A) | amp rating min (A) | current limiting | dimensions ferrule blade | fuse type | interrupting rating kA ac (kA) | notes | rejection feature | time delay | ul standard | voltage rating V (V) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| IEC_aR | ar_690v | 200 | 2 | current_limiting | semiconductor_knife_blade | aR | 200 | IEC aR 690VAC 2-200A; semiconductor protection (fast fuses); PARTIAL range — only protects against short circuits not overloads; must be coordinated with contactor or circuit breaker for overload protection; fast clearing protects power electronics | none | partial_range | IEC_60269-4 | 690 |
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