The TG3‑12KV/155 (125×125) Wall Bushing is engineered for high-current applications in 12 kV systems, with a rated current range of 1250–1600A. It offers a power frequency withstand voltage of 48 kV for 1 minute and a lightning impulse withstand voltage of 85 kV. Constructed with composite insulation of epoxy resin and a copper shielding layer, it ensures excellent electrical performance and enhanced electromagnetic shielding. With IP68-rated protection, it performs reliably even in extreme environments.
Designed with a 125×125 mm standard mounting hole spacing, this wall bushing is ideal for electrical wall penetration and shielding in switchgear, ring main units, and compact substations. Its high-temperature tolerance (‑40℃ to +85℃) makes it especially suitable for demanding environments like new energy facilities, petrochemical plants, and mining operations—serving as an essential insulation component in medium-voltage systems.
| Type | TG3-12KV/155(125×125） |
| Rated Voltage | 12kV |
| Rated Current | 1250A ~ 1600A |
| Power Frequency Withstand Voltage | 48kV/1min |
| Lightning Impulse Withstand Voltage | 85kV |
| Material | Epoxy Resin + Copper Shielding Layer Composite Insulation |
| Applicable Temperature Range | -40℃ ~ +85℃ |
| Protection Rating | IP68 (Dustproof & Waterproof) |
| Installation Dimensions | 125×125 mm (Hole Pitch) |
