Trina Vertex S+ 460W TOPCon Double Glass Panel
Trina Solar Vertex S+ TSM460-NEG9R.28 module, 460 Wp N-Type i-TOPCon double glass monofacial (not bifacial, unlike the twin NEG9RC.27). Efficiency up to 23%, 25-year product warranty and 30-year power warranty. PFAS free certified.
The Trina Solar Vertex S+ TSM460-NEG9R.28 photovoltaic module is a 460 W N-Type i-TOPCon dual-glass panel, with efficiency up to 23,0%. Despite its dual-glass construction, this NEG9R.28 variant is monofacial: the rear glass is used for mechanical strength and durability, not for rear-side power generation, unlike the bifacial NEG9RC.27 variant from the same Vertex S+ family.
Why choose a monofacial dual-glass module?
Dual glass reduces the risk of micro-cracks and scratches on the rear during transport and installation, while also improving resistance to salt mist, ammonia and corrosion, making it suitable for coastal or agricultural installations as well. N-Type triple-cut cells and multi-busbar technology improve current collection and reduce series resistance compared to standard full-cell modules.
TSM460-NEG9R.28 technical specifications
| Nominal power | 460 Wp |
| Maximum efficiency | 23,0% |
| Cell technology | N-Type i-TOPCon, triple-cut cells, multi-busbar |
| Construction | Dual glass, monofacial |
| Power tolerance | 0/+5 W (positive only) |
| First-year degradation | 1% |
| Subsequent annual degradation | 0,4% |
| Product warranty | 25 years |
| Power warranty | 30 years |
| Certifications | IEC61215/IEC61730, PID, salt mist, ammonia, PFAS free |
| Weight and dimensions | 21,8 kg, 1762x1134x30 mm |
What is the difference compared to the bifacial variant from the same family?
The NEG9R.28 code identifies the monofacial variant of the Vertex S+: it produces power only from the front side. The Vertex S+ family also includes the NEG9RC.27 model, physically similar but bifacial, capable of generating energy from the rear as well in installations with good albedo. Confusing them when ordering is a common mistake, because both are dual-glass modules with very similar codes.
What is included in the supply?
- Trina Solar TSM460-NEG9R.28 photovoltaic module with MC4-EVO2 connectors
- IEC, PID, salt mist and ammonia certifications included per batch
Frequently asked questions
Is the TSM460-NEG9R.28 bifacial since it has dual glass?
No: despite the dual glass, this variant is monofacial and produces only from the front side. The rear glass is used for mechanical resistance, not to generate energy from the rear. The bifacial variant of the same series has the code NEG9RC.27.
Is it suitable for installations in coastal environments?
Yes, the manufacturer certifies it for resistance to salt mist and ammonia corrosion, typical conditions in coastal and agricultural areas.
How much power does it lose over time?
The power warranty covers 30 years, with a declared degradation of 1% in the first year and 0,4% per year in subsequent years, typical values for high-end N-Type modules.
Is it compatible with already installed inverters?
Yes, the manufacturer declares it compatible with the main existing inverters and mounting systems, without requiring dedicated components.
Is it a PFAS-free product?
Yes, the module is certified PFAS free by the manufacturer, an increasingly required criterion in public tender specifications and project environmental certifications.