Modular Expandable Smart Distribution Box With Built In Surge Protection Device

Specifications
Material: Flame-retardant ABS Displaytype: LCD Touch Screen
Numberofcircuits: 8 Mountingtype: Wall-mounted
Inputvoltage: 220V/380V Dimensions: 400mm X 300mm X 150mm
Ratedcurrent: 63A Function: Protecting Function,Electrical Distribution Box Size
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Modular Expandable Smart Distribution Box

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380V Smart Distribution Box

Product Description
Modular Expandable Smart Distribution Box With Built-in Surge Protection Device
Product Overview

Step into the future of residential and industrial power management with our Modular Expandable Smart Distribution Box. Engineered to meet the rigorous demands of modern smart grids, renewable energy integration, and IoT home automation, this advanced enclosure features a built-in Surge Protection Device (SPD) to ensure continuous, high-level electrical safety.

Unlike traditional static breaker boxes, this premium distribution unit features a revolutionary expandable modular chassis. This allows electricians and systems integrators to scale up circuitry or add smart monitoring modules seamlessly as a building's power demands grow. Equipped with integrated IoT communication capabilities and enterprise-grade surge suppression, it is the ultimate solution for protecting sensitive electronics, EV charging circuits, and solar PV installations.

Technical Specifications & Engineering Data
Parameter Technical Specifications
Product Architecture Modular Expandable Enclosure with Integrated Busbar Expansion
Surge Protection Class Type 2 / Class II (Type 1+2 Available for Custom Orders)
Nominal Discharge Current (Iₙ) 20 kA (8/20 μs)
Max Discharge Current (Iₘₐₓ) 40 kA (8/20 μs)
Voltage Protection Level (Uₚ) ≤ 1.5 kV
Smart Connectivity Wi-Fi / RS485 / Tuya Zigbee / Modbus RTU Protocol
Material Composition Heavy-Duty, Flame-Retardant ABS Base + Polycarbonate Cover
Flame Retardancy Rating UL94-V0 (Self-extinguishing)
Ingress Protection (IP) IP65 Weatherproof (Suitable for Indoor & Sheltered Outdoor Use)
Standard Capacity Base 12-Module Way (Expandable to 24-Way or 36-Way via Snap-on Kits)
Modular Expandable Smart Distribution Box technical diagram and installation view
Core Features & Technological Advantages
1. Future-Proof Modular & Expandable Design

Eliminate the costly requirement of completely replacing your distribution panel during building renovations. Our proprietary interlocking chassis allows installers to attach expansion side-car modules seamlessly. The internal copper busbar system supports safe, rapid extension to accommodate new circuit breakers, timers, or smart relays.

2. Integrated IoT Smart Energy Monitoring

Knowledge is safety. The built-in smart telemetry board allows real-time tracking of voltage fluctuations, current draw, power factor, and total kilowatt-hour consumption. Data is broadcasted directly to your smartphone or centralized building management system (BMS), sending instant push notifications the moment an electrical anomaly or overload is detected.

3. Industrial-Grade Built-In Surge Protection (SPD)

Lightning strikes and grid switching can destroy expensive appliances, solar inverters, and smart home systems in milliseconds. This unit features a factory-prewired, high-capacity Type 2 SPD with high-energy Metal Oxide Varistors (MOVs). A clear mechanical status window on the panel changes color (Green to Red) when the internal module requires zero-tool hot-swapping.

4. Optimized Thermal Architecture

Packed electrical enclosures generate heat. This smart distribution box is designed with computational fluid dynamics (CFD) optimized ventilation pathways. Air channels reject heat effectively while maintaining a strict IP65 rating against dust and moisture ingress, preventing internal thermal tripping of your MCBs and RCDs.

High-Value Application Scenarios
  • Smart Home Infrastructure: The central nerve center for modern smart homes housing IoT switching modules, automated lighting controls, and home automation servers.
  • Solar PV & Battery Storage Systems: Ideal DC/AC distribution sub-panel to manage and protect solar inverters, energy storage systems (ESS), and net-metering electronics.
  • EV Charging Stations: Dedicated safety sub-panel equipped to handle the sustained high-amp draw of Electric Vehicle Supply Equipment (EVSE) while blocking transient grid surges.
  • Modern Commercial Sub-Panels: Clean, scalable power distribution solution for modern retail outlets, offices, and light industrial workshops.
Why Partner With Us as Your B2B Supplier?
  • 100% Parameter Verified Safety: Our smart boards and SPDs carry full international testing certifications, providing your engineering team with complete peace of mind.
  • Frictionless Installation Kits: Every unit ships as a complete kit, including the pre-mounted DIN rail, insulated neutral and ground brass terminals, pre-wired SPD, and basic expansion links.
  • OEM Protocol Customization: For volume commercial orders, we can pre-configure the smart modules to communicate via your preferred local protocol frameworks, including custom software API integrations.
Frequently Asked Questions (FAQ)
Q: How exactly does the "expandable" feature function in the field?
A: The main enclosure features removable side-knockouts and heavy-duty structural locking tabs. To expand the box, you remove the side panel, clip on our standard expansion module shell, and extend the DIN rail connection using the provided copper extension link kit.
Q: Can the built-in surge protection device be replaced without shutting off the main power?
A: Yes. The pre-installed SPD utilizes a modular cartridge system. If a catastrophic surge occurs and degrades the protector, you simply pull out the spent cartridge and plug in a replacement module without needing to disconnect the main wiring.
Q: Does the smart monitoring function require a subscription or external cloud fee?
A: No. The local hardware supports open-source protocols (like Modbus and local Zigbee) which allow free connection to local control systems. Standard mobile app integration via Tuya/Smart Life is completely free.
Contact Details
Xiamen Rongmai Electrical Equipment Co., Ltd.

Contact Person: Mr. Tan

Tel: 86--8615960356367

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