G10-05 — Medium Terminal Insulation Cover
The mid-size cover in the G10 terminal series, molded for cable lugs, bolted terminals and clamp connections in the 50–150 mm² conductor range — the workhorse size for distribution transformer bushings and feeder cable terminations.
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Overview
The G10-05 is the medium-size cover in the G10 terminal insulation series, molded for cable lugs, bolted terminals and clamp connections in the 50–150 mm² conductor range. This is the most common terminal size on medium-voltage distribution equipment — transformer LV/MV bushings, feeder cable riser poles, switchgear cable compartments, and line recloser terminals.
Terminals in this size range carry significant load current and are often the hottest point on the equipment — making them particularly vulnerable to tracking from pollution and moisture condensation. The G10-05’s HTV silicone cover provides both electrical insulation and a hydrophobic weather seal that prevents conductive pollution from forming a tracking path across the terminal.
Part of the 4-size G10 family — if G10-05 is too small or large for your terminals, check G10-02 (≤50 mm²), G10-06 (150–300 mm²) or G10-07 (>300 mm²). Molded from HTV silicone — hydrophobic, UV-stable, anti-tracking, flame-retardant. Slip-on cap design; live-line installable. Custom dimensional adjustments and OEM branding available.
Specifications
| Model | G10-05 |
|---|---|
| Size | Medium — for terminals and cable lugs 50–150 mm² |
| Material | High-Temperature Vulcanized (HTV) Silicone Rubber |
| Designed For | Medium bolted terminals · transformer LV/MV lugs · feeder cable terminations · recloser terminals |
| Key Properties | Hydrophobic · UV-resistant · anti-tracking · flame-retardant · self-extinguishing |
| Operating Temperature | -60 °C ~ +200 °C |
| Color | Red (standard); Grey and custom available |
| Installation | Slip-on / cap-type; live-line installable |
| Package | 3 PCS / SET |
| Standard | IEC / GB compliant; ISO 9001 factory |
| Sibling Models | G10-02 (small) · G10-06 (large) · G10-07 (extra-large) |
Key Features
Mid-Size Workhorse
Sized for the most common MV terminal range (50–150 mm²) — fits the majority of distribution transformer and feeder connections.
Anti-Tracking at Load
Hydrophobic silicone prevents moisture and pollution from forming a conductive track across warm, loaded terminals.
Lug-Hugging Geometry
Molded around the exact shape of a palm-style cable lug — covers the lug palm, bolt head, barrel and cable entry in one piece.
Weatherproof Silicone
Hydrophobic, UV-stable HTV silicone — maintains flexibility and insulation properties for decades outdoors.
Retrofit Without Outage
Slip-on cap design — install on existing terminals in seconds with hot-stick tools, no disconnection needed.
4-Size G10 Range
From G10-02 (≤50 mm²) to G10-07 (>300 mm²) — consistent quality across all terminal sizes in your network.
Applications
Distribution Transformer Bushings
The #1 application — insulating MV and LV bushing terminals on pole-mounted and ground-mounted transformers.
Line Recloser & Sectionalizer Terminals
Covering the power terminals on automatic line reclosers and sectionalizers.
Feeder Cable Riser Poles
Insulating terminations where underground feeder cables rise to connect to overhead lines.
Substation Cable Terminations
MV cable lug covers in substation switchgear and cable boxes.
Frequently Asked Questions
How do I know if G10-05 is the right size vs G10-02 or G10-06?
Can G10-05 handle the heat from a loaded transformer terminal?
Does the cover trap moisture inside the terminal?
Can G10-05 be installed on angled cable exits?
What’s the lead time for G10-05 in volume?
Need G10-05 for Your Transformer Terminals?
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