Surge Protection Durable Solar Combiner Box For Residential Solar System

Basic Properties

Place of Origin:XiaMem,China

Trading Properties

Minimum Order Quantity:100
Price:negotiable
Payment Terms:TT
Specifications
Cable Entry: Cable Glands With Strain Relief Dimensions: Varies, Typically Around 300x250x150 Mm
Protection: Overcurrent Protection, Surge Protection, Reverse Polarity Protection Number Of Inputs: 4 To 12 Strings
Max Current: 30A / 60A / 100A Enclosure Material: IP65 Rated Plastic Or Metal
Mounting Type: Wall-mounted Or Pole-mounted Standards Compliance: UL1741, IEC 61439, CE
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Surge Protection Solar Combiner Box

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100A Solar Combiner Box

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Wall Mounted Solar Combiner Box

Product Description
Surge Protection Durable Solar Combiner Box For Residential Solar System
Product Overview

Maximize the safety, efficiency, and longevity of your home green energy setup with our Surge Protection Durable Solar Combiner Box. Engineered specifically for residential solar systems, this heavy-duty combiner box consolidates multiple DC strings from your photovoltaic (PV) panels into a single, organized output before connecting to your inverter.

Equipped with professional-grade, high-voltage surge protection devices (SPD), dedicated DC fuses, and a heavy-duty circuit breaker, it acts as an impenetrable shield for your expensive solar inverter and household appliances against lightning strikes and overcurrent faults. Built to withstand extreme outdoor conditions, this box guarantees operational peace of mind for your sustainable home.

Technical Specifications
Parameter Specifications & Standards
System Application Residential Solar PV Systems (Grid-Tie / Off-Grid / Hybrid)
Number of Inputs (Strings) Available in 2-String, 4-String, or 6-String Configurations
Maximum DC Voltage 500V DC / 1000V DC Options
Surge Protection Device (SPD) Type 2 DC Surge Arrester (In: 20kA, Imax: 40kA)
Overcurrent Protection High-Voltage DC Fuses (Standard 15A/20A/32A)
Main Circuit Breaker Heavy-Duty DC Isolator Switch / Circuit Breaker
Ingress Protection Rating IP65 Weatherproof & Dust-proof
Enclosure Material Impact-Resistant, UV-Stabilized ABS / Polycarbonate
Certifications CE, TUV, RoHS, ISO9001 Quality Certified
Solar Combiner Box technical diagram and installation overview
Core Features & Safety Advantages
Advanced High-Voltage Surge Protection (SPD)

Rooftop solar arrays are highly vulnerable to indirect lightning strikes and voltage spikes. Our combiner box features a professional-grade Type 2 DC Surge Protective Device. It safely clamps down transient overvoltages within nanoseconds, diverting dangerous electrical surges directly to the ground line and safeguarding your residential inverter from catastrophic failure.

Multi-String DC Isolation & Overcurrent Fuses

Each PV string input is fitted with its own independent, high-voltage DC fuse. This granular protection isolates individual strings in the event of a short circuit or reverse-current fault, preventing localized panel damage from affecting the entire solar array. The integrated heavy-duty DC circuit breaker allows for safe, manual system shutdown during home maintenance.

IP65 Weatherproof & Rugged Durability

Designed for continuous outdoor exposure, the enclosure is molded from premium, high-density ABS plastic with UV inhibitors. The perimeter features a seamless polyurethane sealing gasket that blocks out rain, snow, blowing dust, and humidity. It maintains its structural integrity and will not crack, warp, or rust over decades of sun exposure.

Plug-and-Play Pre-Wired Internal Design

Cut down your installation time and labor costs significantly. Our residential combiner box comes fully pre-wired internally with solar-grade copper cables. The input and output sections feature clearly labeled terminal blocks and pre-installed waterproof cable glands (or MC4 connectors, optional), allowing your installer to complete the hookup quickly and accurately.

Residential Application Scenarios
  • Rooftop Solar Arrays: Consolidates multiple strings of solar panels mounted on different roof faces (e.g., East/West configurations) into a single optimized line.
  • Home Energy Storage Integration: Protects the DC input side of hybrid inverter systems paired with residential lithium battery backups.
  • Off-Grid Eco-Cabins & Homesteads: Provides robust, industrial-grade circuit protection for remote off-grid solar power setups vulnerable to unpredictable weather.
Why Choose Our Solar Combiner Box?
  • Visual Status Indicators: The surge protection modules feature convenient color-coded windows (Green = Protected, Red = Replace), allowing homeowners to inspect system health at a glance.
  • Anti-Arcing Security: Standard AC components cannot handle high-voltage DC electricity safely. Our box strictly utilizes specialized DC-rated components to eliminate the risk of electrical arcing and fire hazards.
  • Universal Compatibility: Designed to work seamlessly with all major residential solar panel brands and string inverter models available on the market.
Frequently Asked Questions (FAQ)
What is the main purpose of a solar combiner box in a home system?
It brings multiple wires coming from your solar panels together into one main set of cables, reducing the amount of wiring needed. Crucially, it houses the fuses and surge arresters required to protect your home and your inverter from electrical overloads and lightning.
Can this box handle a 1000V DC residential setup?
Yes, we offer models rated up to 1000V DC. Please check your solar panel string math or consult your installer to select the correct voltage variant (500V or 1000V) before ordering.
Are the internal fuses and SPD modules replaceable?
Absolutely. Both the DC fuses and the surge protection cartridges are designed for standard DIN-rail mounting and can be swapped out easily without replacing the entire combiner box if they trip during a severe electrical event.
Contact Details
Xiamen Rongmai Electrical Equipment Co., Ltd.

Contact Person: Mr. Tan

Tel: 86--8615960356367

Send your inquiry directly to us
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