CNC 1500V DC Solar Protection BOM Pakistan 2026 — 100kW, 500kW, 1MW, 5MW Plant Bills of Materials | CNC Electric
Updated: May 2026 · CNC Electric Pakistan
For Pakistani commercial and industrial solar developers, the question is rarely "should we go 1500 V DC?" — that's settled (yes, the economics work). The question is what exactly goes into the protection bill of materials, what it costs, what the lead time is, and what compliance documentation NEPRA and EPC consultants will demand. This pillar is the working procurement document: four real plant sizes (100 kW, 500 kW, 1 MW, 5 MW), the exact CNC protection BOM for each, indicative pricing, lead times, and the compliance package required at handover.
Why 1500 V DC at Commercial Scale — One-Minute Recap
At 1500 V DC string voltage (vs the older 1000 V or 600 V), you fit more panels in series → fewer parallel strings → shorter cable runs → less copper → lower I²R losses → higher inverter efficiency. The net effect for a 1 MW plant is roughly Rs. 10-15 lakh saved on cable copper alone, plus 1-1.5% better lifetime energy yield. The full economic case is in our 1500V Industrial Solar Installation guide. This pillar is about how to actually buy the protection chain.
Plant Size 1 — 100 kW Commercial Rooftop
Typical configuration: 240 panels @ 420 W bifacial, 22 panels in series, 11 strings parallel, one 100 kW central inverter. Two combiner boxes (5-6 strings each), single inverter input.
| Item | CNC Model | Qty | Unit Price (PKR) | Subtotal |
|---|---|---|---|---|
| 1500V DC gPV fuse 20A (10×85 mm) | YCF8-PVS 20A 1500V | 22 (one per string per leg) | Rs. 1,500 | Rs. 33,000 |
| 1500V DC fuse holder (10×85) | YCFH-1500V | 22 | Rs. 1,100 | Rs. 24,200 |
| 1500V DC MCB 4P 63A (combiner output) | YCB8s-63PV 4P 1500V | 2 (one per combiner) | Rs. 4,200 | Rs. 8,400 |
| 1500V DC SPD Type 1+2 (combiner) | YCS6-PV 4P 1500V Iimp 12.5kA | 2 | Rs. 18,000 | Rs. 36,000 |
| 1500V DC SPD Type 2 (inverter input) | YCS6-PV 4P 1500V In 20kA | 1 | Rs. 12,000 | Rs. 12,000 |
| 1500V DC main disconnect (inverter input) | YCDI-1500V 200A | 1 | Rs. 25,000 | Rs. 25,000 |
| Combiner box enclosure IP65 (steel) | YCCB-1500V-6S | 2 | Rs. 10,000 | Rs. 20,000 |
| 6 mm² 1500V DC cable (string runs) | YCDC-1500V-6mm Red/Black | 400 m total | Rs. 500/m | Rs. 200,000 |
| 10 mm² 1500V DC cable (combiner→inverter) | YCDC-1500V-10mm | 80 m | Rs. 900/m | Rs. 72,000 |
| MC4 connectors (1500V rated) | YCMC4-1500V | 60 pairs | Rs. 180 | Rs. 10,800 |
| Earth conductor + lugs + bonding kit | — | — | — | Rs. 18,000 |
| Protection BOM total (excl. labour) | Rs. 459,400 | |||
Lead time: 5-7 days for stocked items, 10-14 days if SPDs and 1500V DC breakers need to come on order. Bulk discount: 8-12% off list at this quantity.
Plant Size 2 — 500 kW Industrial Rooftop
Configuration: 1,200 panels, 24 panels in series, 50 strings parallel, 5 combiners of 10 strings each, two 250 kW inverters (or one 500 kW central inverter).
| Item | CNC Model | Qty | Subtotal (PKR) |
|---|---|---|---|
| 1500V DC string fuses 20A (10×85) | YCF8-PVS | 100 | Rs. 150,000 |
| 1500V DC fuse holders | YCFH-1500V | 100 | Rs. 110,000 |
| 1500V DC MCCB 4P 250A (combiner output) | YCM6-250 4P 1500V (Mid-2026 launch) | 5 | Rs. 350,000 |
| 1500V DC SPD Type 1+2 (combiner) | YCS6-PV 4P 1500V | 5 | Rs. 90,000 |
| 1500V DC SPD Type 2 (inverter input) | YCS6-PV 4P 1500V | 2 | Rs. 24,000 |
| 1500V DC main disconnect 400A (inverter input) | YCDI-1500V 400A | 2 | Rs. 90,000 |
| Combiner box enclosure IP66 (steel, 10-string) | YCCB-1500V-10S | 5 | Rs. 90,000 |
| 6 mm² 1500V DC cable | YCDC-1500V-6mm | 2,200 m | Rs. 1,100,000 |
| 16 mm² 1500V DC cable (combiner→inverter) | YCDC-1500V-16mm | 400 m | Rs. 720,000 |
| MC4 connectors (1500V) | YCMC4-1500V | 300 pairs | Rs. 54,000 |
| Earthing & bonding | — | — | Rs. 60,000 |
| Protection BOM total | Rs. 2,838,000 | ||
Per-kW protection cost at 500 kW: Rs. 5,676/kW. Lead time: 14-21 days due to YCM6 MCCB availability in mid-2026.
Plant Size 3 — 1 MW Commercial Solar Plant
Configuration: 2,400 panels, 24 panels in series, 100 strings parallel, 8 combiners with 12-13 strings each, four 250 kW inverters or two 500 kW string inverters.
| Item | CNC Model | Qty | Subtotal (PKR) |
|---|---|---|---|
| 1500V DC string fuses 20A | YCF8-PVS | 200 | Rs. 300,000 |
| 1500V DC fuse holders | YCFH-1500V | 200 | Rs. 220,000 |
| 1500V DC MCCB 4P 400A (combiner output) | YCM6-400 4P 1500V | 8 | Rs. 720,000 |
| 1500V DC SPD Type 1+2 | YCS6-PV 4P 1500V | 8 | Rs. 144,000 |
| 1500V DC SPD Type 2 (inverter) | YCS6-PV 4P 1500V | 4 | Rs. 48,000 |
| 1500V DC main disconnect 630A | YCDI-1500V 630A | 4 | Rs. 360,000 |
| Combiner enclosure (12-string IP66) | YCCB-1500V-12S | 8 | Rs. 180,000 |
| 6 mm² DC cable (string runs) | YCDC-1500V-6mm | 4,400 m | Rs. 2,200,000 |
| 25 mm² DC cable (combiner→inverter) | YCDC-1500V-25mm | 800 m | Rs. 2,000,000 |
| MC4 connectors | YCMC4-1500V | 600 pairs | Rs. 108,000 |
| Earthing & bonding (extensive) | — | — | Rs. 150,000 |
| Protection BOM total | Rs. 6,430,000 | ||
Per-kW protection cost at 1 MW: Rs. 6,430/kW. Lead time: 21-28 days. Bulk discount: 12-15%.
Plant Size 4 — 5 MW Utility-Scale (Industrial Estate / IPP Sub-Scale)
Configuration: 12,000 panels, 24 panels in series, 500 strings parallel, distributed combiners (40 boxes × 12-13 strings), 20× 250 kW string inverters or 5× 1 MW central inverters.
| Item | CNC Model | Qty | Subtotal (PKR) |
|---|---|---|---|
| 1500V DC string fuses 20A | YCF8-PVS | 1,000 | Rs. 1,500,000 |
| 1500V DC fuse holders | YCFH-1500V | 1,000 | Rs. 1,100,000 |
| 1500V DC MCCB 4P 400A | YCM6-400 4P 1500V | 40 | Rs. 3,600,000 |
| 1500V DC SPD Type 1+2 | YCS6-PV 4P 1500V | 40 | Rs. 720,000 |
| 1500V DC SPD Type 2 (inverter) | YCS6-PV 4P 1500V | 20 | Rs. 240,000 |
| 1500V DC main disconnect 630A | YCDI-1500V 630A | 20 | Rs. 1,800,000 |
| Combiner enclosures (12-string IP66 outdoor-rated) | YCCB-1500V-12S-O | 40 | Rs. 1,200,000 |
| 6 mm² DC cable | YCDC-1500V-6mm | 22,000 m | Rs. 11,000,000 |
| 35 mm² DC cable (commercial-scale combiner-to-inverter) | YCDC-1500V-35mm | 4,000 m | Rs. 14,000,000 |
| MC4 connectors | YCMC4-1500V | 3,000 pairs | Rs. 540,000 |
| Earthing infrastructure (extensive, multiple grids) | — | — | Rs. 800,000 |
| Lightning protection (rod, mast, dedicated downconductor) | — | — | Rs. 1,200,000 |
| Protection BOM total | Rs. 37,700,000 | ||
Per-kW protection cost at 5 MW: Rs. 7,540/kW. Lead time: 35-50 days from order; CNC project-level pricing applies. Bulk discount: 18-22%.
Cost-Per-kW Pattern Across Plant Sizes
| Plant Size | Protection BOM | Per-kW Cost | Notes |
|---|---|---|---|
| 100 kW (rooftop commercial) | Rs. 459,400 | Rs. 4,594/kW | Smallest economic scale |
| 500 kW (industrial rooftop) | Rs. 2,838,000 | Rs. 5,676/kW | Scale efficiency starts |
| 1 MW (utility/commercial) | Rs. 6,430,000 | Rs. 6,430/kW | Lightning protection adds cost |
| 5 MW (utility-scale sub-IPP) | Rs. 37,700,000 | Rs. 7,540/kW | Extensive earthing & LPS |
Per-kW cost rises with plant size because earthing infrastructure and lightning protection don't scale linearly. At 5 MW, dedicated lightning rod systems and multi-grid earthing add ~Rs. 400/kW that isn't needed on 100 kW rooftop.
Lead Times & Stock Availability
| Item Class | Stock Status | Typical Lead Time |
|---|---|---|
| YCB8s-63PV DC breakers (500V, 1000V) | In Lahore stock | 1-3 days |
| YCB8s-63PV 1500V variants | Order from manufacturer | 10-14 days |
| YCM6 1500V DC MCCB 250-630A (commercial scale) | Mid-2026 product launch | 14-21 days (initial) |
| YCF8-PVS string fuses 1500V | In stock | 1-3 days |
| YCS6-PV SPDs 1500V | In stock | 3-7 days |
| 1500V DC cable (4 mm² to 35 mm²) | In stock 6 mm²; larger sizes 7-10 day order | 3-14 days |
| 1500V MC4 connectors | In stock | 1-3 days |
| Custom enclosures and panel-build services | Made-to-order | 14-30 days |
Compliance Documentation Package (Included with Order)
Every CNC 1500V protection BOM ships with:
- Product data sheets with full electrical and mechanical specifications
- Type test certificates per IEC 60947-2 (breakers), IEC 60947-3 (disconnects), IEC 60269-6 (gPV fuses), IEC 61643-31 (SPDs), IEC 60364-7-712 (PV installation)
- RoHS and CE compliance certificates
- Manufacturer's quality control report for each batch
- Selectivity coordination chart showing breaker + fuse + SPD coordination
- Installation manual with Pakistani-specific wiring diagrams
- NEPRA-compliance summary for net-metering inspection (where relevant)
For 1 MW+ projects, optional add-ons:
- Single-line diagram review by CNC engineering team — Rs. 25,000 fixed
- Short-circuit study verification — Rs. 50,000-100,000
- Pre-commissioning inspection — Rs. 75,000-150,000 depending on plant size
- Commissioning supervision at site — Rs. 100,000-300,000
Comparison vs Imported Premium Brands (Schneider / ABB)
For a 1 MW plant, equivalent imported BOM costs:
| Brand | 1 MW Protection BOM (approx) | Premium vs CNC | Lead Time |
|---|---|---|---|
| CNC YCM6 / YCB8s / YCS6 | Rs. 6.4 million | baseline | 3-4 weeks |
| Chint NXC + NM8 1500V | Rs. 8-9 million | +25-40% | 4-6 weeks |
| Schneider iC60 PV + Compact NSX DC | Rs. 18-22 million | +180-240% | 8-12 weeks |
| ABB S800PV + Tmax XT | Rs. 16-20 million | +150-210% | 10-14 weeks |
For Pakistani EPC contractors with realistic margin pressure, the CNC tier delivers full IEC 60947-2 compliance, full traceability, and 5-year warranty at 30-40% of European brand cost. CNC is the de-facto standard for new Pakistani 100 kW to 5 MW commercial solar in 2026.
Ordering Workflow
- Submit single-line diagram and load schedule via WhatsApp +92 326 1111376 or email
- CNC engineering team reviews within 2-5 business days; provides verified BOM and indicative pricing
- Formal quotation issued with itemised pricing, lead time, payment terms
- Order confirmation with 30-40% advance for stock items, 50% for special order
- Pre-delivery inspection available for orders above Rs. 10 lakh
- Delivery to Pakistani site (typically 3-21 days depending on stock status)
- Commissioning support available for orders above Rs. 50 lakh
- 5-year warranty on all components from delivery date
Frequently Asked Questions — 1500V DC Commercial Solar
Is 1500 V DC really standard for Pakistani commercial solar in 2026?
Yes — virtually every new commercial installation above 100 kW specifies 1500 V DC. The cable copper savings alone (Rs. 1-2 lakh per 100 kW vs 1000 V design) pay back the 1500 V equipment premium in 8-12 months of operation.
Can I mix CNC 1500V DC components with Chint or Schneider on the same plant?
Yes, IEC 60947 standards are interoperable. But for clean liability and unified warranty, single-brand specification is recommended. Mixed installations require careful coordination study to ensure breaker / fuse / SPD compatibility.
What is the typical lead time for 1500V DC MCCBs?
CNC YCM6 1500V DC MCCB range (250-630 A) launches mid-2026 — initial orders may have 14-21 day lead time. Imports (Schneider Compact NSX DC, ABB Tmax XT) typically 8-14 weeks. For urgent projects, the YCB8s-63PV up to 63 A in stock can serve smaller combiners while MCCB lead time runs.
What documentation does NEPRA require for net-metering above 25 kW?
Single-line diagram, equipment specifications, IEC type test certificates, installation drawings, panel data sheets, short-circuit study, and NEPRA inspector physical verification. CNC's compliance package covers all equipment-related documentation; the installation drawings come from your EPC contractor.
How does the per-kW protection cost compare to total CapEx?
Protection BOM is typically 4-7% of total Pakistani commercial solar CapEx (panels + inverters + structure + protection + cabling + labour). At 1 MW: Rs. 6.4 million of Rs. 80-100 million total CapEx.
Does CNC offer turnkey commercial solar installation?
CNC supplies all protection and switchgear components plus engineering review and commissioning supervision. Turnkey installation (panels, mounting structure, inverter selection, civil works, labour) is handled by partner Pakistani EPC contractors. We can recommend appropriate EPC partners by region.
What happens if I undersize the 1500V breakers — go 1000V instead?
The breaker arc-extinguishing chamber is engineered for the rated voltage. A 1000 V DC breaker on a 1500 V system may fail to interrupt on fault — the arc continues, melts the breaker, ignites adjacent insulation. This is the same risk class as using AC breakers on DC. Always match voltage rating to actual system voltage with a 25% safety margin.
Is there a discount for repeat orders / EPC contractor accounts?
Yes. CNC has structured dealer accounts for EPC contractors and solar installers in Pakistan. Volume-based pricing applies above 50 kW project size; recurring-account discounts above 500 kW per year. Contact via WhatsApp for partnership terms.
More CNC Electric Buyer's Guides
- 1500V Industrial Solar Installation — Sizing Methodology
- MCCB & ACB for Industrial Pakistan
- DC Breaker Price in Pakistan 2026
- Solar Combiner Box Wiring
- DC Fuse vs DC Breaker
- Why AC Breaker CANNOT Be Used on Solar
- How to Wire SPD — Fire-Safe Surge Protection
- CNC Industrial Range
- 5 SPD Fire Case Studies Pakistan — Root Cause Analysis