Caixa combinadora fotovoltaica for Solar Systems

Engineered for ESS, EV Charging, and Commercial Solar —
Safe, Reliable, and Efficient DC Power Integration.

🔒 IEC & CE Certified ⚡ Up to 1000VDC
🏭 OEM/ODM Support 🌍 Global Export Ready

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Quick Selector

Pick your series and jump into the six most common configurations. HS uses a disconnector; HD uses a breaker.

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Wiring Topologies

PV combiner box topologies vary with inverter count, DC run length, and protection strategy. These cards outline typical layouts so you can match each solar PV combiner box to the right scenario.

Single-Bus (1 Output)

  • Strings: 1–6
  • Output: Single inverter or MPPT
  • Best for: Residential rooftops, small C&I
  • Simpler wiring and easier maintenance.
  • Single DC bus reduces component count.
  • Use properly sized Fusível CC.

Dual Outputs (Parallel Inverters)

  • Strings: 2–6
  • Output: Two inverters or dual MPPTs
  • Best for: Commercial rooftops, hybrids
  • Balances current across two DC paths.
  • Provides redundancy if one inverter fails.
  • HS disconnector with dual outputs recommended.

Long-Run Strings

  • Strings: Any
  • Output: 1 or 2
  • Best for: Ground-mount farms, remote sites
  • Long DC runs increase voltage drop.
  • Consider larger conductors for lower losses.
  • HD breaker ensures safe load break at distance.

Remote SPD Placement

  • Strings: 2–6
  • Output: 1 or 2
  • Ideal para: Telhados propensos a raios
  • Type II DPS near the array to clamp surges.
  • Optional I+II near inverter for dual protection.
  • Short leads and proper grounding are critical.

Aterramento e polaridade

  • Strings: Any
  • Output: Any
  • Ideal para: Todas as instalações
  • Bold +/− polarity labels avoid mistakes.
  • Common PE bar for equipotential bonding.
  • Weatherproof enclosures protect terminals.

Understanding these combiner box PV system layouts helps ensure safe, efficient DC distribution with the right topology for your solar project.

Aplicativos e casos de uso

A rich gallery of real-world scenarios to help you match each solar PV combiner box to site conditions—string count, outputs, and surge protection—so your combiner box PV system stays safe and efficient.

Residential rooftop solar array with single-inverter PV combiner box use case

Telhado residencial

Compact arrays with short DC runs and a single inverter.

  • 1–2 strings · 1 output · Type II SPD
  • Uso fusíveis gPV sized to module Isc × factor
  • Clear +/− labels and service-friendly layout
Commercial & industrial rooftop solar with dual-MPPT PV combiner configuration

Telhado comercial e industrial

Multiple strings split across dual MPPT channels or parallel inverters.

Ground-mount solar field with long DC runs toward centralized inverter area

Ground-Mount Arrays

Long DC runs to centralized inverters at utility-scale fields.

  • 4–6 strings · 1–2 outputs · I+II SPD (regional)
  • Manage voltage drop with larger conductors
  • HD breaker enables safe isolation at distance
EV charging canopy with solar panels feeding parallel inverters

Carports / EV Canopies

Canopy-mounted modules feeding EV infrastructure with parallel inverters.

  • 2–4 strings · 2 outputs · I+II SPD
  • Dual outputs for parallel MPPTs or inverters
  • Label routing for overhead maintenance safety
Energy storage containers coupled with PV strings via combiner box

ESS DC Bus Coupling

Hybrid sites coupling PV strings to energy storage systems.

  • 2–3 strings · 1 output · I+II SPD
  • HS disconnector simplifies service windows
  • Coordinate fuse ratings with charge current
Remote microgrid site with stand-alone solar array and service hut

Microgrid / Off-Grid

Isolated sites with variable loads and planned service intervals.

  • 1–3 strings · 1 output · I+II SPD (risk-based)
  • HD breaker supports frequent switching/diagnostics
  • Keep spares: fuses, labels, glands

Não tenho certeza de qual pv combiner boxes fit your scenario? Compare HS/HD ou talk to an engineer.

Build & Materials

Rugged construction matters in outdoor DC distribution. Thoughtful materials, ingress protection and service-friendly details make each PV combiner box safer to install and easier to maintain.

UV-Resistant Enclosure

PC/ABS blend with outdoor durability and weather seal integrity.

  • UV-stabilized shell for long exposure
  • Gasket compression & tight door tolerance
  • Stainless hardware to prevent corrosion

See enclosure details

Cable Glands & Terminations

IP-rated glands sized to cable OD with strain relief and clear routing.

  • Marked torque references at terminals
  • Minimized bend radius & tidy cable paths
  • Ingress protection maintained after service

Ingress protection basics

Layout de barramento e fiação

Low-resistance copper busbars with safe spacing and test access.

  • Segregated paths for + / − and PE
  • Labeled test points for commissioning
  • Fuse coordination per gPV sizing

Labeling & Safety Marks

Bold **+/−** and PE symbols for quick verification in the field.

  • UV/chemical-resistant labels & service tags
  • QR quick docs for installers
  • LOTO-friendly handle area (where applicable)

HS disconnector - HD breaker

Serviceability & Spares

Front access and a small spares kit keep downtime low.

  • Clearance for fuse drawer / breaker handle
  • Spares list: fuses, glands, labels
  • Inspection intervals aligned with site load & environment

SPD placement - Fuse selection

Engineering Checklist

Before commissioning a solar PV combiner box, verify these essentials. A concise checklist reduces installation errors and improves the reliability of your combiner box PV system.

DC Voltage & Strings

  • Array Voc @ Tmin fits 500/600/1000 V rating
  • String count matches input terminals
  • Apply safety factor when calculating Isc

Cable Sizing & Runs

  • Measure length to inverter; target < 2% drop
  • Select conductor cross-section accordingly
  • Glands match cable outer diameter

Coordenação de proteção

Aterramento e polaridade

  • Bold +/− labels, PE bonding to enclosure
  • Continuity check across grounding system
  • Torque terminals per spec sheet

O&M Planning

  • Define inspection interval (annual/biannual)
  • Stock spares: fuses, glands, labels
  • Train staff on lock-out / tag-out
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Model Comparison

Compare all HS (Disconnector) and HD (Breaker) pv combiner boxes at a glance, then jump to Especificações e fiação for details.

ModeloSérieINSAÍDATensãoSwitchUse caseSpecs

Comparison of PV combiner box models with strings, outputs, voltage and switch type.

PERGUNTAS FREQUENTES

Perguntas comuns de engenharia e instalação sobre nossos Caixas combinadoras fotovoltaicas. Orientação prática para combiner box PV system design, sizing and service.

It merges multiple DC strings into one or two protected outputs. Inside you usually have gPV fusíveis, DPSs, and a switch device (HS disconnector or HD breaker) to isolate and protect downstream equipment.

Escolha HS (disconnector) when you need simple, safe isolation with low switching frequency. Choose HD (breaker) when you require frequent switching, integrated overcurrent protection, or more advanced diagnostics. See also the Engineering Checklist.

Use the module Isc multiplied by a safety factor (per IEC guidance) and select a gPV fuse with the correct DC voltage rating. Fuse sizing must coordinate with cable cross-section and ambient temperature.

Most rooftops use Type II DPSs. If your site has high lightning exposure or ground-mount arrays, consider a Type I+II SPD. Always install with short leads and solid PE bonding to keep surge protection effective.

It’s not recommended. Mixed orientations create mismatch and hot spots. Always keep strings of similar orientation and tilt angle in the same combiner. Consult inverter manufacturer guidelines before combining non-identical arrays.

Visual inspection: every 6 months. Torque check: annually. Replace fuses after trips. Inspect breakers e disconnectors for mechanical wear. Service intervals may vary with environment (dust, humidity, temperature cycles).

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Why Choose Us

A final word on why our Caixas combinadoras fotovoltaicas stand out: safe design, verified standards, and dependable service from engineering to delivery.

Standards First

Designed and referenced against key standards: IEC 60947-3 (switch disconnectors) and IEC 61643-31 (DC surge protective devices).

Direto da fábrica

Controlled supply chain and traceable components with short lead times. Packaging and labeling tailored for global shipping and on-site identification.

Customization

OEM/ODM options for enclosure size, labeling, and connection interfaces—match your combiner box PV system to project requirements without over-engineering.

Global Service

Proven across residential, C&I rooftops, ground-mount arrays, ESS coupling and EV canopies. Spare kits and maintenance references keep downtime low.

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