JUST Small Modules 40W – 320W
Small-format mono modules 40W – 320W — off-grid, caravans, boats, signage, IoT, solar streetlights, rural telecom
Small-format monocrystalline modules from 40W up to 320W, across two product series (E + F) with ~30 model variants on the standard catalog. Built for off-grid and DC-load applications where standard 500W+ utility panels are oversized — caravans / RV rooftops, marine / boats, telecom base stations, solar streetlights, rural water pumping, IoT sensor grids, solar-powered signage, solar toys / gadgets. All modules run on JUST's cell + lamination line so quality matches our utility catalog. Frame colour (silver / black), cell count, dimensions, junction box, and cable length are customisable per project. IP67 junction box + 3.2 mm tempered AR-coated front glass + anodised aluminium frame standard. MOQ 50 pcs for samples / custom prototypes, full-container pricing for volume orders.
Full Specifications
| Power Range | 40W – 320W (~30 standard SKUs; custom available) |
| Technology | N-type TOPCon main; HJT or PERC-legacy optional |
| Cell Type | 182mm half-cut (9-BB to 16-BB) or custom cut cells |
| Module Efficiency | 17 – 22% depending on power / cell layout |
| Frame | Anodised aluminium (silver or black) |
| Glass | 3.2mm tempered AR-coated |
| Junction Box | IP67 (MC4-compatible) |
| Output Cable | 50 cm standard, length customisable |
| Mechanical Load | 5400 Pa front / 2400 Pa rear |
| Operating Temp | –40 °C to +85 °C |
| Max System Voltage | 700 Vdc (IEC / UL) |
| Product Warranty | 10 – 12 years |
| Power Warranty | 25 years linear (to ≥80%) |
Key Strengths
- ✓40W – 320W full range — covers every off-grid niche from IoT sensors to solar streetlights
- ✓Same cell + lamination line as utility modules — bankable quality even at small scale
- ✓Custom frame colour, junction box, dimensions, cable length, and cell count on request
- ✓TOPCon main lineup (up to 22% efficiency); HJT available for hot climates
- ✓Low MOQ — sample / custom prototype orders from 50 pcs
- ✓IP67 junction box + 5400 Pa snow / 2400 Pa wind rated — marine / desert / mountain rated
Certifications
Certificate documents available upon request (stamped digital / scanned original).
Caravans / RVs, marine / boats, solar streetlights, telecom base stations, IoT sensor networks, outdoor signage, rural water pumping, agricultural off-grid, solar gadgets, prototyping / R&D
Trade Terms
- MOQ
- 50 pcs (sample) / 1 × 40HQ for volume orders (dimension-dependent)
- Lead Time
- 30–45 days FOB Ningbo (custom spec)
- Get a Formal Quote
B2B solar pricing varies by order size, payment terms, destination, and market week. Submit an RFQ — Frank personally emails a formal Proforma Invoice within 24 hours.