Balance of System (BOS) Kit
The Balance of System (BOS) Kit from Trishla Electrical Solutions is designed to provide complete safety, reliability, and performance for every solar installation. Each kit includes high-quality protection devices, cabling, connectors, and earthing materials that ensure long-term durability and seamless installation.
Built for the PM Surya Ghar: Muft Bijli Yojana, these kits follow industry standards and support installers with pre-configured, ready-to-use components.
Key Features
• Complete protection and cabling system for 1–10 kW solar setups
• High-quality MCBs, SPDs, connectors, and earthing components
• Cable sizing aligned with panel wattages and array requirements
• Reliable performance under Indian environmental conditions
• Fast installation with predefined lengths and specifications
• Ensures system safety, longevity, and optimal output
BOS Kit Specifications
Protection Devices
| Component | 1–3 kW | 4–6 kW | 6–10 kW |
|---|---|---|---|
| DCDB | DC MCB–32A + SPD–600V | DC MCB–32A + SPD–600V | DC MCB–32A + SPD–1000V |
| ACDB | AC MCB–32A + SPD–1+1N | AC MCB–32A + SPD–1+1N | AC MCB–32A + SPD–3+1N |
Cables
| Cable Type | Specification |
|---|---|
| DC Cable | 4 sqmm (30–40 m depending on panel count) |
| AC Cable | 2 × 2.5 sqmm or 2 × 4 sqmm (30–40 m) |
| LA Cable | 16 sqmm (30–40 m) |
| Earthing Cable | 16 sqmm Aluminium (40 m) |
Earthing Components
| Component | Details |
|---|---|
| Earthing Rod | Copper-bonded, 14 mm diameter, 1 meter long |
| Chemical Bag | 10 kg Earth Enhancing Minerals |
| Lightning Arrester | HDG, 1 meter, single-spike design |
Connectors
| Component | Rating |
|---|---|
| MC4 Connector | 1000 V, IP65 |
Panel-Wise BOS Cable Chart
| Panel Range | DC Cable (4 sqmm) | AC Cable | LA Cable (16 sqmm) | Earthing Cable (16 sqmm AL) |
|---|---|---|---|---|
| 1–7 (530–585 Wp) | 30 m | 2 × 2.5 sqmm – 30 m | 30 m | 40 m |
| 1–6 (530–620 Wp) | 30 m | 2 × 2.5 sqmm – 30 m | 30 m | 40 m |
| 8–11 (530–545 Wp) | 40 m | 2 × 4 sqmm – 40 m | 40 m | 40 m |
| 8–10 (550–580 Wp) | 40 m | 2 × 4 sqmm – 40 m | 40 m | 40 m |
| 7–9 (585–620 Wp) | 40 m | 2 × 4 sqmm – 40 m | 40 m | 40 m |
| 12–18 (530–550 Wp) | 40 m | 4 × 4 sqmm – 40 m | 40 m | 40 m |
| 11–17 (555–580 Wp) | 40 m | 4 × 4 sqmm – 40 m | 40 m | 40 m |
| 10–16 (585–620 Wp) | 40 m | 4 × 4 sqmm – 40 m | 40 m | 40 m |
Why Installers Prefer Our BOS Kits
• Pre-engineered for accuracy and compliance
• Reduces installation time significantly
• Ensures stable power flow and protection
• Compatible with major inverter and module brands
• Trusted quality backed by leading electrical manufacturers
• Ideal for rooftop systems under government subsidy programs
Applications
• Residential rooftop solar systems
• Commercial solar installations
• Small industrial solar setups