info@kimaelectric.com
+86 199 4451 2191
Low-Voltage Cable Branch Box
Product Overview
The Low-Voltage Cable Branch Box is a complete set of standardized equipment designed specifically for low-voltage distribution systems with a rated voltage of 400V (380V). It is widely used in urban streets, garden residential communities, high-rise buildings, industrial and mining enterprises, and transformer substations or distribution stations in outdoor public spaces.
Its primary functions include power distribution, control, and protection for power, lighting, and distribution equipment. It serves as an ideal supporting device for urban network, rural network, and residential area cable retrofit projects.
Core Technologies & Structural Features
●Enclosure Structure & Material: The enclosure is typically manufactured from fiber-reinforced unsaturated polyester resin (SMC composite material) or premium S304 stainless steel, offering excellent arc resistance, spark resistance, and superior corrosion resistance. The roof adopts a ridge-style 3° slope design to prevent rainwater and snow accumulation. The door hinge is concealed, equipped with a dedicated anti-theft lock, and the protection level can reach IP44 and above, suitable for a wide temperature range of -25°C to +55°C.
●Busbar System Design: The main busbar and branch lines adopt T2 electrolytic copper rectangular busbars. The N-phase specification is the same as the phase conductors, and the PE busbar cross-sectional area is no less than 1/2 of the phase conductor. Phase connections are fully enclosed with heat-shrink insulation boxes, and the insulation sleeves have passed rigorous aging tests to ensure long-term operational safety.
●Incoming/Outgoing Switch Configuration: The incoming and outgoing circuit schemes are highly flexible. Options include Molded Case Circuit Breakers (MCCB), fuse-switch disconnectors, or three-phase integrated fuse load switches. Switches can be directly plugged or mounted onto the busbar without drilling holes, creating a clearly visible disconnect point, which greatly facilitates construction and future maintenance.
●Digital & Intelligent Upgrade: The new generation of intelligent low-voltage branch boxes integrates IoT technology, with built-in sensors and intelligent monitoring units capable of real-time data acquisition for temperature, humidity, electrical parameters, and circuit breaker status. It supports remote monitoring, sub-second fault diagnosis, and earth leakage protection, comprehensively enhancing the intelligent operation and maintenance level of the distribution system.
Key Technical Parameters
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Parameter |
Value |
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Rated Operating Voltage |
AC 400V (380V) |
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Rated Insulation Voltage |
690V |
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Rated Frequency |
50Hz or 60Hz |
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Main Busbar Rated Current |
630A, 400A, 250A, 160A, etc. (up to 1600A) |
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Rated Short-Time Withstand Current |
≥10kA / 1s |
|
Short-Circuit Breaking Capacity |
31.5kA, 50kA, 65kA |
|
Enclosure Protection Level |
Outdoor: IP44 / IP54; Indoor: IP33 |
Ordering Information
Dear Customer, to ensure that the low-voltage cable branch box you order precisely matches the on-site construction and distribution requirements, please provide the following detailed technical information before placing your order:
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I. Core Electrical Parameters & Drawings |
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1 |
Primary system diagram: Provide detailed LV main circuit wiring scheme, specifying the number of incoming lines, outgoing lines, and standby circuits. |
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2 |
Basic model & capacity: Specify the exact model, rated voltage, main busbar rated current, and rated current of each branch circuit. |
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3 |
Switchgear & protection configuration: Specify the type of incoming/outgoing switches (MCCB, fuse-switch disconnector, or isolator), brand/model requirements, whether residual current protection (RCD) is needed on specific circuits, and whether surge protective devices (SPD), arresters, or short-circuit fault indicators are required. |
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II. Structural & Appearance Requirements |
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1 |
Enclosure material & color: Specify the housing material (SMC composite material or stainless steel) and surface coating color (default: eco-green or off-white if no special requirement). |
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2 |
Cable entry/exit method: Specify the cable entry/exit method (typically bottom in/bottom out), and provide the approximate outer diameter range of cables for proper cable gland and sealing ring selection. |
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3 |
Special environment customization: If the equipment is to be installed in special environments such as high altitude (>1000m), high salt spray, high humidity, or extreme temperatures, please specify in detail so that enhanced anti-corrosion or insulation design can be applied. |
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III. Commercial & Project Information |
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1 |
Basic project information: Provide your company name, project name, installation address, and expected delivery date. |
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2 |
Contact information: Provide the name and phone number of the technical contact person and the commercial contact person for timely communication. |
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3 |
Spare parts: If you have special spare parts requirements (e.g., spare fuses, dedicated operating handles), please list the names and quantities. |
Tip: Low-voltage cable branch boxes are typically customized according to project requirements. The final quotation, technical parameters, and delivery date shall be subject to the technical agreement and commercial contract signed by both parties. Thank you for choosing our products!
If you are looking for reliable power support for your project, please contact the Kima Electric team. We are ready to provide you with the best solutions.
Convenient Inquiry Process
You may contact us through various channels, including our website and email. Providing your electrical system drawings or detailed load list will help us deliver faster and more accurate quotations.
Production & Quality Control
Prior to formal production, we will provide detailed technical proposals including specification parameters and structural drawings for your review and confirmation.
We strictly implement the ISO quality management system, with comprehensive monitoring of raw materials, production processes, and finished product inspection to ensure stable and reliable quality for every customized product.
Delivery & After-Sales Service
Packaging conforms to international standards, lined with high-performance moisture-proof and shock-absorbing materials to ensure absolute safety during long-distance transportation.
Each shipment includes detailed user manuals, maintenance manuals, and related technical documentation.
Remote or on-site installation guidance and commissioning services are available upon request.
Comprehensive technical consulting, troubleshooting, and spare parts supply are provided to ensure long-term stable operation of the equipment.
Who Are We
Kima Electric is a global brand under Anhui Jinma Electric Technology Co., Ltd.. and is a professional manufacturer of transformers &power transmission and distribution equipment in China. Established in 2001 and located in Wuwei, Wuhu City, Anhui Province, China ,the company occupies a facility spanning 93 mu (approximately 62,000 square meters) with a building area of 51,000 square meters and a professional team of over 180 personnel. With over 20 years of industry expertise, we have developed a comprehensive production system, rigorous quality control, and a culture of continuous innovation. We are committed to providing global customers with exceptional quality assurance and professional services.
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> KIMA, Your Trusted Global Partner
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Anhui Kima Electric Technology Co., Ltd.
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+86 400 0553 633
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+86 199 4451 2191
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info@kimaelectric.com
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No. 168 Tongjiang Avenue, Wuwei Economic Development Zone, Wuwei City, Anhui Province, ChinaNote: Kima is a brand of Anhui Jinma Electric Technology Co., Ltd., China.
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