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VSUN Brand review

VSUN455N-120MH

455 Wp TOPCon
ComparePV verdict

Middle of its segment, modest efficiency

Rank 7,854 of 14,005
Compare panels Datasheet PDF
Power (Wp)
455
Typical for its class
Efficiency (%)
21.03
Weak · bottom 2%
Density (Wp/m²)
210.3
Weak · bottom 2%
Temp (%/°C)
-0.300
Weak · bottom 20%
Weight (kg)
23.9
Typical · median 24.0 kg
Warranty (yrs)
30
Typical · median 30 yrs

The VSUN N-120MH series is based on advanced N-type cell technology, which represents a significant step forward in the efficiency of photovoltaic systems. The use of a 120 half-cut cell structure combined with TOPCon architecture allows for a significant reduction in resistive losses and better performance in low-light conditions. What distinguishes these modules is primarily minimal light-induced degradation (LID) and an excellent temperature coefficient, thanks to which the installation produces more energy on hot days. These panels are dedicated to investors seeking maximum self-consumption with limited roof space, in both the residential and commercial sectors. Compared to traditional solutions, the N-120MH series offers a longer lifespan and stability of parameters for decades, which directly translates into a faster return on investment. The solid frame construction and high resistance to mechanical loads guarantee safety in difficult weather conditions. By choosing these modules, the user receives energy stability based on the latest achievements in materials engineering, which effectively eliminate typical problems of older cell generations. This solution is an ideal choice for demanding prosumers for whom the highest operational performance of the module throughout the year, regardless of the weather, is what matters.

Ranking

1,089 panels in the segment TOPCon 450-500 W
Metric This panel Median Position in segment Overall rank
Module efficiency 21.03% 22.52% Weak · bottom 2% 9,671
Power density 210.3 225.2 Weak · bottom 2% 9,646
Temperature coefficient -0.300 -0.290 Weak · bottom 20% 6,093
Weight per kWp 52.5 52.2 Typical 6,129
Performance warranty 30 yrs 30 yrs Typical 21
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

0 positive · 3 caution
Best for

Residential, commercial, shaded-installations and hot-climate.

Not ideal for

Tight roof space, roofs where every square metre has to count and hot climates.

Watch-outs
21.03% module efficiency

Bottom 2% of the TOPCon 450-500 W segment, against a median of 22.52%. Ranked 9,671st in the whole database.

210.3 watts per square metre

Bottom 2% of the TOPCon 450-500 W segment, against a median of 225.2. Ranked 9,646th in the whole database.

-0.300 %/°C temperature coefficient

Bottom 20% of the TOPCon 450-500 W segment, against a median of -0.290.

Notes from the database
  • At 21.0% efficiency, this panel is 1.5pp below the TOPCon 450-500W median of 22.5%
  • 210.3 W/m² power density is 14.9 W/m² below TOPCon 450-500W median (225.2 W/m²) - requires larger installation area
  • At -0.30%/°C, hot weather performance is typical for TOPCon 450-500W panels
  • #9671 for efficiency, #6093 for temperature performance out of 14005 panels

Specifications

Open datasheet PDF
Nominal power (Pmax) 455 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 21.03 % Weak Segment median 22.52%
Vmpp · Impp 34.60 V · 13.16 A Operating point at max power
Voc · Isc 41.91 V · 13.90 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 1908×1134×30 mm · 2.16 m² of roof
Weight 23.9 kg Typical Typical · median 24.0 kg
Cells 120 · TOPCon Monocrystalline
Coefficient Pmax -0.300 %/°C Weak bottom 20% of its segment
Coefficient Voc · Isc -0.260 · 0.046 %/°C
NOCT 45 °C At 800 W/m², 20 °C ambient
Product warranty 25 years Hardware defects only
Performance warranty 30 years Typical median 30 yrs · median 30 yrs
End-of-warranty output 87.4 % Equals 398 W guaranteed
Degradation 1.00 → 0.40 % First year, then annual

Datasheet charts

Open datasheet PDF

Measured curves published by VSUN in this model's datasheet. A chart carrying a wattage was measured on that variant alone - only the ones that describe 455 Wp appear here. The rest cover the whole series.

Linear Performance Warranty (30 years) Linear Performance Warranty (30 years) Whole series I-V Curves at Different Temperatures (AM1.5, 1000W/m²) I-V Curves at Different Temperatures (AM1.5, 1000W/m²) Whole series

Simulations

Live - change any input
Lifetime output & value
30 years at 1200 kWh/kWp/year and €0.50 per kWh
Power in year 30
-
Lifetime energy
-
Energy value
-

Degradation from this panel's own datasheet figures. No inverter, soiling or shading losses.

Heat losses
-0.300 %/°C against a segment median of -0.290
-
Filter these
Size
Panel Power Eff. Temp. Weight Difference
VSUN VSUN455N-120MH 455 W 21.03% -0.300 23.9 kg You are here
AIKO-A495-MCE54Mw 495 W 24.80% -0.260 21.0 kg +40 W, cooler, +3.8 pp
LR7-54HJD-505M 505 W 24.70% -0.240 23.5 kg +50 W, cooler, +3.7 pp
AIKO-A490-MCE54Mw 490 W 24.50% -0.260 21.0 kg +35 W, cooler, +3.5 pp
LR7-54HJD-500M 500 W 24.50% -0.240 23.5 kg +45 W, cooler, +3.5 pp
CIPRO-TN9C54M-500W 500 W 24.50% -0.260 21.4 kg +45 W, cooler, +3.5 pp
GK-3-54HGb-500M 500 W 24.50% -0.260 21.4 kg +45 W, cooler, +3.5 pp
VSUN460N-120BMH-DG-BB 460 W 21.26% -0.300 26.7 kg Heavier, +0.2 pp
VSUN465N-120BMH-DG-BB 465 W 21.49% -0.300 26.7 kg +10 W, heavier, +0.5 pp
VSUN470N-120MH-BB 470 W 21.72% -0.300 23.9 kg +15 W, +0.7 pp
LR7-60HVH-560M 560 W 24.80% -0.260 25.0 kg +105 W, cooler, +3.8 pp
LR7-60HVH-555M 555 W 24.60% -0.260 25.0 kg +100 W, cooler, +3.6 pp
LR7-60HVHL-550M 550 W 24.40% -0.260 16.3 kg +95 W, lighter, +3.4 pp
JAT60S40-540/LR 540 W 24.40% -0.260 23.5 kg +85 W, cooler, +3.4 pp
GK-5-60HG-540M 540 W 24.40% -0.260 23.3 kg +85 W, cooler, +3.4 pp
JKM545-54QL6-DV-F1-EU 545 W 24.27% -0.260 27.5 kg +90 W, cooler, +3.2 pp
LR7-60HVH-545M 545 W 24.20% -0.260 25.0 kg +90 W, cooler, +3.2 pp

Found 746 panels of the same or similar size to this one, within ±10 mm. See them here Found 755 panels of the same or similar size to this one, within ±25 mm. See them here Found 910 panels of the same or similar size to this one, within ±50 mm. See them here Found 1489 panels of the same or similar size to this one, within ±100 mm. See them here

Common questions

6 answered
What is TOPCon cell technology used in the VSUN N-120MH panels, and how does it differ from classic PERC cells?
TOPCon (Tunnel Oxide Passivated Contact) is an N-type cell technology that reduces recombination losses through an additional passivation layer on the rear side of the cell. Compared to older P-type PERC cells, TOPCon delivers higher efficiency (up to 21.7%), lower light-induced degradation (LID), and better long-term parameter stability. The N-120MH series uses 120 half-cut cells, which further reduces resistive losses and improves module performance under partial shading.
What warranty comes with the VSUN N-120MH panels, and what does it cover?
The manufacturer provides a 25-year product warranty and a 30-year power performance warranty, guaranteeing at least 87.4% of nominal power output by the end of that period. First-year power degradation is capped at 1%, dropping below 0.4% annually thereafter. This warranty structure ensures the installation maintains high energy productivity throughout its service life, directly improving the return on investment.
Are VSUN N-120MH panels suitable for roofs with limited space?
Yes. With maximum power reaching 470 Wp and efficiency up to 21.7%, the N-120MH panels deliver higher installed capacity from fewer modules than older PERC-based designs. This makes them especially useful on sloped roofs with limited surface area, where maximizing self-consumption without enlarging the mounting area is the priority.
Is the VSUN N-120MH a bifacial panel that generates power from both sides?
No, the N-120MH series consists of monofacial panels that generate power only from the front side of the module. Despite lacking dual-side generation, the TOPCon architecture combined with half-cut cells still delivers strong efficiency and parameter stability, making these panels a versatile choice for both rooftop and ground-mounted installations without needing special light-reflecting structures.
How do VSUN N-120MH panels perform on hot days and in high temperatures?
The N-120MH panels have a favorable power temperature coefficient of around -0.3%/°C, better than typical PERC modules (usually -0.35% to -0.4%/°C). This means a smaller power drop as cell temperature rises above 25°C, resulting in higher energy yield on hot, sunny days — common on well-exposed rooftops during Polish summers.
Is VSUN a Tier 1 manufacturer, and where are the N-120MH panels made?
VSUN does not currently appear on the Bloomberg NEF Tier 1 manufacturer list, but the company operates a European headquarters in Germany, which supports warranty handling and logistics across the Polish and EU markets. Lacking Tier 1 status doesn't directly reflect module quality — buyers should focus on technical specifications, warranty terms, and local service availability when choosing panels.
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