wtaiele

Solar Energy

Solar installations face challenges that standard AC components were never designed to handle sustained DC arcs, lightning-induced surges across open fields, and strict grid interconnection safety codes.

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WHY SOLAR MATTERS

Protecting the Future ofSolar Energy

WTAIDQ specializes in advanced DC protection solutions for PV systems, including DC MCBs with magnetic blowout arc extinguishing technology and IEC 61643-31 certified SPDs designed for solar applications.

From utility-scale projects to residential systems and OEM solutions, we provide reliable products and expert support to protect every installation.

  • DC MCB up to 1500V
  • IEC 60947-2 certified
  • Type 2 DC SPD
  • IEC 61643-31 certified
  • Custom combiner boxes
  • IP65 outdoor rated
  • Global logistics
  • 15-day typical lead
Protecting the Future of
1,500V
Max DC Rating
10kA
DC Breaking Capacity
40kA
SPD Surge Rating
5GW+
Protected Capacity
THE CHALLENGE

Three Critical Risks in Solar Systems

Understanding why standard protection fails and how WTAIDQ solves each problem at the component level.

DC MCB with Magnetic Blowout Technology
WTAIDQ SOLUTION

DC MCB with Magnetic Blowout Technology

Our DC MCBs use a permanent magnet that creates a Lorentz force on the arc physically pushing it into a segmented arc chute where it's stretched, cooled, and extinguished. Rated to 1500V DC with 6kA/10kA breaking capacity. The pole configuration (2P series / 4P series-parallel) matches your system voltage and current.

  • Permanent magnet blowout chamber
  • Segmented arc chute for rapid cooling
  • IEC 60947-2 certified for DC applications
Type 2 DC Surge Protection at String Level
WTAIDQ SOLUTION

Type 2 DC Surge Protection at String Level

Our DC SPDs are specifically designed and tested to IEC 61643-31 for photovoltaic systems. Plug-in modules with visual status indication and remote signaling contacts. Installed at each combiner box input, they clamp surge voltages in nanoseconds before the energy reaches your panels or inverter.

  • IEC 61643-31 certified (not adapted from AC)
  • 40kA Imax · 1500V DC · Plug-in replaceable
  • Remote signaling for monitoring integration
DC Isolator + AC Protection Chain
WTAIDQ SOLUTION

DC Isolator + AC Protection Chain

Our DC isolator switches provide true visible-break isolation per IEC 60947-3, rated to 1500V DC. On the AC side, MCCBs with adjustable trip settings protect the inverter output, while motorized ATS units manage grid-to-backup switching for systems with battery storage or diesel backup.

  • DC Isolator: 1500V · door-mount · padlockable
  • AC MCCB: 690V · 36–100kA · adjustable trip
  • ATS: 250–3200A · automatic/manual/remote
PRODUCTS

Core Product Line for Solar

Every component purpose-built for photovoltaic DC applications not adapted from AC designs.

APPLICATIONS

Where Our Solar Products Perform

Every component purpose-built for photovoltaic DC applications not adapted from AC designs.

Residential Rooftop — 3–10kW

Single-string or dual-string systems with DC isolator at the array, DC MCB+SPD at a compact wall-mount combiner, and RCBO protection on the AC side. Plug-and-play kits available for distributor partners.

Commercial Rooftop — 30–500kW

Multi-string arrays feeding centralized inverter stations. Each string protected at the combiner box level. AC MCCBs at inverter outputs with selective coordination to isolate faults without shutting down the entire rooftop.

Utility-Scale Ground Mount — 1–100MW+

Hundreds of combiner boxes across hectares of terrain. DC MCBs with high breaking capacity for parallel string configurations. Type 2 SPDs at every combiner input. Central AC protection at the MV transformer station

Solar + Battery Storage (Hybrid)

Bidirectional protection on both DC battery circuits and AC grid interconnection. Specialized DC MCBs for battery strings with high prospective fault current. Type B RCDs where battery inverters produce smooth DC residual current.

COMMON QUESTIONS

Frequently Asked Questions

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Yes. Rated to 1500V DC per IEC 60947-2, with 6–10kA breaking capacity. Magnetic blowout arc extinguishing for reliable DC interruption. Deployed in utility-scale solar farms across Africa and Asia.
CONTACT US

Start Your Project Today

Provide your application, electrical specs, certifications and quantity; custom engineering solutions within 24hrs.
  • Free product design consultation and technical drawings
  • Competitive factory-direct pricing, no intermediaries
  • Full export documentation and logistics support
  • Standard samples shipped within 7 business days