Fuse Characteristics: IEC_gG
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) | application | conventional fusing current factor (dimensionless) | conventional nonfusing current factor (dimensionless) | current limiting | dimensions ferrule blade | fuse type | interrupting rating kA ac (kA) | notes | rejection feature | time delay | ul standard | voltage rating V (V) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| IEC_gG | gg_400v_10_160 | 160 | 10 | IEC gG 400VAC cylindrical type 10-160A; household and light industrial; EN 60269-3; standard sizes 8.5x31.5mm 10x38mm 14x51mm 22x58mm; common in European panel boards as DIN-rail protection | 1.6 | 1.1 | current_limiting | cylindrical_8x31_10x38_14x51 | gG | 50 | Cylindrical gG fuses per EN 60269-3; breaking capacity 50kA for cylindrical type; at 5xIn gG blows within 2-5s; conventional non-fusing current = 1.1xIn; fusing current = 1.6xIn within 1 hour | none | full_range | IEC_60269-3 | 400 |
| IEC_gG | gg_500v_160_630 | 630 | 160 | IEC gG 500VAC 160-630A; larger NH fuse sizes NH2/NH3/NH4; feeder and distribution protection; 160A melting I2t typ 5000-8000 A2s; 400A melting I2t typ 30000-60000 A2s; 630A melting I2t typ 80000-120000 A2s | 1.6 | 1.1 | current_limiting | knife_blade_NH_large | gG | 120 | NH size designations: NH000 NH00 NH1 NH2 NH3 NH4 per IEC 60269-2; breaking capacity 120kA at 500VAC; time-current: at 10xIn blows in 0.1-0.2s; gL designation obsolete (now gG) | none | full_range | IEC_60269-2 | 500 |
| IEC_gG | gg_500v_2_125 | 125 | 2 | IEC gG 500VAC 2-125A full-range general purpose; will clear overloads and short circuits; NH knife-blade or cylindrical types; conventional fusing current 1.6xIn within 1h; very common in European industrial installations | 1.6 | 1.1 | current_limiting | knife_blade_NH_or_cylindrical | gG | 120 | At 5xIn gG blows within 2-5 seconds; at 10xIn blows within 0.1-0.2 seconds; 2A melting I2t typ 0.1-1 A2s; 125A melting I2t typ 2000-4000 A2s; NH1 handles 32-160A NH2 handles 63-250A | none | full_range | IEC_60269-2 | 500 |
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