When most people think about solar installations, the spotlight is usually on solar panels and inverters. And while these are undeniably essential, they are only part of the full story.
A successful solar project is much more than modules and inverters — it’s about the Balance of System (BOS).
These behind-the-scenes components are the real heroes that ensure safety, performance, and long-term reliability. Overlook them, and even the most advanced panels won’t save your system from problems.
Here are the Top 5 BOS components you should never ignore — and why Sunrise Solartech ensures every one of them meets industrial-grade standards.
1️⃣ DCDB (Direct Current Distribution Box)
What it does:
Distributes and protects the DC power coming from the solar panels before it reaches the inverter. Includes fuses, SPD (Surge Protection Devices), and isolators.
Why it matters:
High-voltage DC can be dangerous if not handled correctly. A quality DCDB isolates faults, protects equipment, and ensures safe maintenance access.
Pro tip: Choose IP65-rated enclosures with CRCA construction and copper/aluminum busbars for reliability.
2️⃣ ACDB (Alternating Current Distribution Box)
What it does:
Takes care of the AC output from the inverter to the load or the grid. It includes MCBs/MCCBs, SPDs, and energy meters for monitoring.
Why it matters:
Faults on the AC side can cause inverter trips, system shutdowns, or even fire. An ACDB gives you structured power management and easy serviceability.
Sunrise ACDBs are built with weatherproof enclosures, high-breaking capacity breakers, and customizable designs for residential to industrial projects.
3️⃣ Earthing Electrode System
What it does:
Provides a low-resistance path for fault current to safely discharge into the ground.
Why it matters:
Good earthing prevents electrocution, protects inverters from lightning damage, and is often a regulatory requirementfor solar installations.
At Sunrise Solartech, we offer SSBFC models with copper or GI rods, tested for both AC and DC earthing up to 1500V.
4️⃣ String Combiner Box
What it does:
Combines multiple strings (groups of solar panels) into one feed that goes into the inverter. Contains fuses, surge protection, isolators, and terminals.
Why it matters:
Without proper string management, any fault in one panel can affect the entire system. A high-quality combiner box ensures safe, centralized connection points.
Sunrise SCBs support up to 1500V with heavy-duty enclosures, MC4 connectors, and string-level isolators.
5️⃣ Solar Cables & Conduit System
What it does:
Routes power from panels to inverters safely. Includes DC cables, AC armoured cables, conduit pipes (DWC, HDPE, UPVC), glands, and tags.
Why it matters:
Poor cabling can lead to overheating, voltage drops, or even fire. Cable quality and protection determine how long your system lasts in real-world conditions.
Sunrise Solartech only supplies UV-resistant, flame-retardant, and high-flexibility cables, along with cable trays, ducts, and routing accessories for a complete setup.
🚧 Why These Components Are Often Overlooked
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They’re hidden behind the scenes
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EPCs may cut costs here to offer lower pricing
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Buyers often don’t know what to ask for
But ignoring BOS can cost you in system failures, maintenance, and even safety hazards down the line.
💡 Final Thoughts
If you want your solar project to deliver peak performance for 25 years, never compromise on the Balance of System. These 5 BOS elements — when selected carefully — can determine whether your system is safe, smart, and scalable.
✅ At Sunrise Solartech, we specialize in end-to-end BOS solutions, from DCDBs to cable tags — all under one roof.
Have a project in mind?
📞 Call us at +91 98109 40104 or email virenkamra@gmail.com for expert support.