Fully Insulated Cable Branch Box
Product Description
Our Fully Insulated Cable Branch Box is a medium-voltage cable connection solution designed for distribution rooms in humid, corrosive, and contaminated environments where conventional air-insulated equipment would be unreliable. All live parts busbars, cable terminations, and connection points are fully encapsulated in solid insulation material or sealed within an insulated enclosure, providing complete electrical insulation and environmental sealing. The fully insulated, fully sealed construction eliminates the risk of accidental contact, prevents moisture and dust ingress, and requires no periodic internal cleaning or maintenance. This branch box is ideal for coastal areas with salt spray, chemical plants with corrosive atmospheres, underground substations prone to condensation, and tropical regions with high humidity. The compact design supports both indoor and outdoor installation, and the insulated construction enables safe operation even in close proximity to personnel.
Yuanzhuo Electrical Equipment manufactures fully insulated cable branch boxes with high-quality insulation materials and precision sealing. Our 12,000 m² facility with five automated production lines and an annual capacity of 10,000 units supports custom configurations. Each box undergoes 100% insulation resistance testing, partial discharge measurement, and sealing verification before wooden-crate packaging. We support drawing-based manufacturing with lead times of three weeks to one month.
Specifications
|
Parameter |
Specification |
|
Product Type |
Fully Insulated Cable Branch Box |
|
Rated Voltage |
12kV (24kV available) |
|
Rated Current |
630A |
|
Insulation |
Fully encapsulated solid insulation (all live parts) |
|
Short-Time Withstand Current |
20kA / 4s |
|
Enclosure |
Metal cabinet with fully insulated internal modules |
|
Protection Grade |
IP67 (insulated modules), IP54 (cabinet) |
|
Installation |
Indoor or outdoor, floor-standing |
|
Custom Options |
Circuit count, dimensions, branding |
Applications
Coastal and Marine Environments
Provides reliable cable branching in coastal substations, port facilities, and offshore installations, where salt spray and high humidity would corrode air-insulated equipment.
Chemical and Industrial Corrosive Areas
Operates reliably in chemical plants, wastewater treatment facilities, and manufacturing areas with corrosive gases, where the fully sealed insulation prevents chemical attack on live parts.
Underground and Humid Substations
Delivers maintenance-free cable connection for underground substations, basement electrical rooms, and tropical installations, where condensation and high humidity are constant challenges.
Customization
Customization includes number of cable circuits (incoming and outgoing), connector type and current rating, busbar configuration, enclosure dimensions, protection grade, installation type, surface color, and customer branding. We manufacture to confirmed customer drawings.
Packaging & Transportation
Each box is film-wrapped and packed in a wooden crate with internal anti-collision padding. We support FOB to a designated Chinese port and EXW. Payment: 40% deposit, 80% after pre-shipment inspection, full balance at the designated Chinese port. Currencies: USD, EUR, RMB.
FAQ
Q1: What does "fully insulated" mean for this branch box?
A: All live parts - busbars, cable terminations, and connection points - are fully encapsulated in solid insulation material, providing complete electrical insulation and environmental sealing. This eliminates the risk of accidental contact and prevents moisture, dust, and corrosive gases from reaching energized components.
Q2: Is this box suitable for coastal or chemical environments?
A: Yes. The fully insulated, fully sealed construction is specifically designed for humid, corrosive, and contaminated environments including coastal areas, chemical plants, and underground substations.
Q3: What testing do you perform before shipment?
A: Every box undergoes insulation resistance testing, partial discharge measurement, and sealing verification. We perform 100% inspection and accept third-party inspections.
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