DEVSOL 630 Watt N-Type TOPCon 16BB Bifacial Glass-to-Glass Solar Panel
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DEVSOL 630 Watt N-Type TOPCon 16BB Bifacial Glass-to-Glass Solar Panel, manufactured by Nexus Solar Energy Pvt. Ltd., is a high-output solar module designed for residential rooftops with adequate space, commercial rooftops, industrial solar projects and EPC installations. The 630W module uses 132 half-cut N-Type TOPCon bifacial solar cells, delivers 23.32% module efficiency at STC, and combines dual-glass construction with a 1500V DC maximum system rating, an IP68 weatherproof junction-box design, and a low -0.2827%/C Pmax temperature coefficient.
- 630W rated maximum power
- 23.32% module efficiency at STC
- N-Type TOPCon technology
- 16BB / advanced multi-busbar product family
- Bifacial glass-to-glass construction
- 132 half-cut N-Type TOPCon bifacial cells
- 2mm front AR-coated glass + 2mm rear glass
- 1500V DC maximum system voltage
- IP68 junction box
- 5400 Pa front / 2400 Pa rear mechanical load test
- Manufactured by Nexus Solar Energy Pvt. Ltd.
DEVSOL 630 Watt N-Type TOPCon Bifacial Solar Panel
The DEVSOL 630 Watt N-Type TOPCon 16BB Bifacial Glass-to-Glass Solar Panel is a high-output solar module manufactured by Nexus Solar Energy Pvt. Ltd. under the DEVSOL brand. Built with advanced N-Type TOPCon (Tunnel Oxide Passivated Contact) cell technology, this 630W solar panel delivers 23.32% module efficiency at Standard Test Conditions (STC) and features a robust bifacial glass-to-glass construction designed for commercial rooftops, industrial solar projects, EPC installations and large residential rooftops across India.
The DEVSOL 630W module uses 132 half-cut N-Type TOPCon bifacial solar cells, delivering a rated maximum power output of 630W at STC. With an open-circuit voltage (Voc) of 49.50V, short-circuit current (Isc) of 16.12A, maximum power voltage (Vmp) of 41.52V and maximum power current (Imp) of 15.10A, this panel is engineered for high-power solar installations where efficiency and reliability matter most.
Why the 630W TOPCon Module Is Built for High-Power Solar Projects
Buyers searching for a 630 watt solar panel need a module that combines high power density with proven cell technology. The DEVSOL 630W achieves this through:
- 630W rated power output – one of the highest single-module ratings in the DEVSOL range
- 23.32% module efficiency – high energy conversion per square metre of roof or ground area
- N-Type TOPCon architecture – advanced passivated contact technology for superior long-term performance
- 132 half-cut cells – reduced internal resistive losses and better shade tolerance
- Bifacial glass-to-glass design – potential for rear-side energy gain from reflected irradiance
- 1500V DC system voltage rating – suitable for large-scale string configurations
For commercial and industrial solar projects, using higher-wattage modules like the 630W can reduce the total number of panels required for a given DC capacity, subject to electrical, string design and structural requirements. Fewer modules can mean less mounting hardware, reduced labour and lower balance-of-system costs – but final system design must always be completed by a qualified solar designer.
Full Electrical Specifications – STC
| Parameter | 630W Value |
|---|---|
| Rated Maximum Power (Pmax) | 630 W |
| Optimum Operating Voltage (Vmp) | 41.52 V |
| Optimum Operating Current (Imp) | 15.10 A |
| Open Circuit Voltage (Voc) | 49.50 V |
| Short Circuit Current (Isc) | 16.12 A |
| Module Efficiency | 23.32% |
| Power Tolerance | 0 to +4.99 W |
| Power Measurement Uncertainty | < plusmn3% |
STC (Standard Test Conditions): 1000 W/m2 irradiance, 25 degrees C cell temperature, AM 1.5 spectrum. Actual field output depends on irradiance, temperature, orientation, shading, wiring and system design.
NOCT Data
| Parameter | NOCT Value |
|---|---|
| Maximum Power | 476 W |
| Optimum Operating Voltage (Vmp) | 38.88 V |
| Optimum Operating Current (Imp) | 12.17 A |
| Open Circuit Voltage (Voc) | 47.03 V |
| Short Circuit Current (Isc) | 12.99 A |
| Average NOCT | 45.08 +/- 2 degrees C |
NOCT (Nominal Operating Cell Temperature): 800 W/m2 irradiance, 20 degrees C ambient temperature, 1 m/s wind speed. NOCT output represents typical field conditions and is lower than STC rated power.
23.32% Module Efficiency – What It Means
Module efficiency indicates how much incident solar energy is converted into electrical energy under standard test conditions. A 23.32% efficiency rating means the DEVSOL 630W converts approximately 23.32% of the sunlight hitting its surface into usable electricity at STC.
Higher module efficiency is particularly valuable when roof area is constrained, as more power can be generated from a smaller footprint. However, real-world electricity output still depends on irradiance, temperature, orientation, tilt, shading, mismatch, wiring losses and overall system design.
N-Type TOPCon Technology
TOPCon stands for Tunnel Oxide Passivated Contact – an advanced N-Type cell architecture that uses an ultra-thin tunnel oxide layer combined with a passivated contact structure to reduce electron recombination losses at the cell surface. This technology delivers higher conversion efficiency compared to conventional P-Type Mono PERC cells.
The DEVSOL 630W module uses N-Type TOPCon cells, which offer several advantages:
- Higher efficiency potential due to passivated contact structure
- Lower light-induced degradation (LID) compared to P-Type cells
- Better temperature coefficient performance in hot climates
- Suitable for bifacial configurations with rear-side energy gain
TOPCon should not be confused with HJT (Heterojunction Technology), or with HDT (Heterojunction Dual-side Technology) – the Advanced HJT-based dual-side architecture. TOPCon is a different cell platform from heterojunction. For a detailed comparison, see our guide on TOPCon vs HJT vs HDT solar panel technology.
Bifacial Glass-to-Glass Solar Panel
The DEVSOL 630W features a bifacial glass-to-glass construction with 2mm low-iron semi-tempered AR-coated front glass and 2mm low-iron semi-tempered rear glass. Unlike conventional mono-facial panels that only capture sunlight from the front, bifacial panels can also harvest reflected irradiance from the ground, nearby surfaces and diffuse light reaching the rear side.
The technical data specifies a bifaciality factor of 80% +/- 5%, meaning the rear side can contribute up to approximately 80% of the front-side power under ideal reflective conditions. However, actual rear-side energy gain depends on:
- Mounting height and tilt angle
- Ground surface albedo (reflectivity)
- Site geometry and surrounding structures
- Installation configuration
Raised mounting on white or light-coloured surfaces generally allows more rear irradiance than dark flush-mounted rooftops. The 630W rating refers to the front-side STC output; rear-side gain is site-dependent and should not be assumed as a fixed percentage of annual production.
Performance in Indian Heat
Temperature performance matters in India climate. The DEVSOL 630W module specifications include:
| Parameter | Value |
|---|---|
| Power Coefficient gamma (Pmax) | -0.2827%/degrees C |
| Voltage Coefficient beta (Voc) | -0.2277%/degrees C |
| Current Coefficient alpha (Isc) | +0.0350%/degrees C |
| Operating Temperature Range | -40 degrees C to +85 degrees C |
The Pmax temperature coefficient of -0.2827%/degrees C means the module maximum power output decreases by approximately 0.28% for every 1 degree C rise in cell temperature above 25 degrees C. In Indian summer conditions where cell temperatures can reach 60-70 degrees C, understanding this coefficient helps in realistic performance expectations. The N-Type TOPCon architecture generally offers better temperature performance than conventional P-Type cells.
Dual-Glass Construction and Mechanical Strength
The DEVSOL 630W is built with dual-glass construction for long-term durability:
- Front glass: 2mm low-iron semi-tempered AR-coated glass
- Rear glass: 2mm low-iron semi-tempered glass
- Frame: Anodized aluminium alloy 6005, Temper T6, silver colour
- Junction box: 35A split junction box, 3 nos. with individual bypass diode, IP68 weatherproof
- Mechanical load test: 5400 Pa front / 2400 Pa rear
The IP68-rated junction box and dual-glass construction provide weather resistance suitable for outdoor installations. Mechanical load ratings indicate the panel design tolerance for wind and snow loads, but actual installation must comply with local structural and electrical codes.
1500V DC System Design
The DEVSOL 630W has a maximum system voltage of 1500V DC and a maximum series fuse rating of 35A. The higher 1500V system voltage allows longer strings in large commercial and industrial installations, reducing wiring costs and installation complexity.
However, final string design must always be calculated by a qualified system designer considering:
- Cold-temperature Voc (open circuit voltage increases as temperature drops)
- Inverter MPPT voltage and current limits
- Module Voc and Isc specifications
- Local minimum and maximum ambient temperatures
- Applicable electrical standards and safety codes
Unsafe one-size-fits-all string counts should never be used without proper engineering verification.
Applications
The DEVSOL 630W solar panel is suitable for a range of applications:
- Commercial rooftop solar installations
- Industrial rooftop solar projects
- EPC (Engineering, Procurement and Construction) projects
- Ground-mounted solar projects
- Warehouses and factories
- Institutions and educational campuses
- Large residential rooftops where dimensions, structural loading and inverter compatibility are suitable
- High power-density PV arrays
The module dimensions of 2382 x 1133 x 35 mm and weight of 34.5 kg should be considered during structural assessment. Not every residential roof is suitable for this panel size – structural suitability and mounting design must be verified for the actual roof or site.
Complete Mechanical Specifications
| Parameter | Specification |
|---|---|
| Module Dimensions | 2382 x 1133 x 35 mm |
| Weight | 34.5 kg |
| Cell Type / Count | 132 Half-cut N-Type TOPCon Bifacial Solar Cells |
| Frame | Anodized Aluminium Alloy 6005, Temper T6, Silver |
| Front Cover | Low Iron semi-Tempered AR coated Glass, 2 mm |
| Encapsulant | PID resistant and UV resistant Polymeric Film |
| Rear Cover | Low Iron semi-Tempered Glass, 2 mm |
| Junction Box | 35A Split Junction Box, 3 nos. with individual bypass diode, IP68 |
| Bypass Diode | 45V, 200 degrees C max junction temperature |
| Cable | 4 sq. mm, 300 mm length; customised cable length available on request |
| Connector | MC4 compatible; MC4 original available on request |
| Application Class | Class A |
| Safety Class | Class II |
| Mechanical Load Test | 5400 Pa front / 2400 Pa rear |
| Max System Voltage | 1500V DC |
| Max Series Fuse | 35A |
| Operating Temperature | -40 degrees C to +85 degrees C |
DEVSOL 630W Solar Panel Dimensions and Weight
Module dimensions: 2382 x 1133 x 35 mm (Length x Width x Thickness)
Weight: 34.5 kg per module
Structural suitability and mounting design must be verified for the actual roof or site. Consult a qualified structural engineer for load assessment before installation.
Warranty
DEVSOL 630W N-Type TOPCon solar panels come with a 12-year product warranty on materials and workmanship, and a 30-year linear performance warranty. The performance warranty guarantees linear degradation not exceeding 1% in year 1 and 0.4% per year from year 2 to year 30, ensuring reliable long-term energy output.
For full warranty terms and conditions, refer to the applicable Nexus Solar Energy / DEVSOL written warranty documentation for this model.
BIS Registration and Manufacturing
The DEVSOL 630W is manufactured by Nexus Solar Energy Pvt. Ltd. under the DEVSOL brand.
- Brand: DEVSOL
- Manufacturer / Licence Holder: Nexus Solar Energy Pvt. Ltd.
- BIS Licence No.: R-93046086
- Standard: IS 14286 (Part 1/Sec 1):2023 / IEC 61215-1-1:2021
- Safety Standards: IS/IEC 61730-1:2023 and IS/IEC 61730-2:2023
- Category: Crystalline Silicon Terrestrial Photovoltaic (PV) Modules
A BIS licence is meaningful only when the specific model is covered by the licence model list. Verify model coverage under R-93046086 before final labelling.
Is DEVSOL 630W One of the Best Solar Panel Choices in India?
Buyers searching for the best solar panel in India should compare measurable specifications rather than brand slogans. For the DEVSOL 630W module, the relevant numbers are:
- 630W STC power rating
- 23.32% module efficiency
- N-Type TOPCon cells
- Bifacial glass-to-glass construction
- -0.2827%/degrees C Pmax temperature coefficient
- 1500V system rating
- 12-year product + 30-year linear performance warranty
- IP68 junction box
- 5400 Pa front mechanical load rating
Buyer checklist for evaluating any solar panel:
- Exact wattage and efficiency ratings
- Cell technology type (TOPCon, HJT, PERC)
- Product warranty vs performance warranty terms
- BIS registration and exact model coverage
- DCR / non-DCR requirement for your project
- Module dimensions and weight
- Inverter compatibility (Voc, Vmp, Isc, string length)
- Local service and dealer support availability
Why Buy From a Solar Panel Manufacturer in India?
Nexus Solar Energy Pvt. Ltd. is an Indian solar panel manufacturer producing the DEVSOL range of solar modules. Buying from an Indian manufacturer offers advantages including local warranty support, service accessibility and compliance with Indian BIS standards.
Explore the full range of solar panels from Nexus Solar Energy, or visit our company page to learn more about Nexus Solar Energy Pvt. Ltd.
FAQs – DEVSOL 630 Watt Solar Panel
Q: What is the power rating of the DEVSOL 630W TOPCon panel?
A: The DEVSOL 630W is rated at 630W maximum power output under Standard Test Conditions (STC).
Q: What is the efficiency of the DEVSOL 630W solar panel?
A: The module efficiency is 23.32% at STC (1000 W/m2, 25 degrees C, AM 1.5).
Q: What technology does the 630W panel use?
A: It uses 132 half-cut N-Type TOPCon (Tunnel Oxide Passivated Contact) bifacial solar cells.
Q: Is the DEVSOL 630W solar panel bifacial?
A: Yes. The technical source specifies bifacial glass-to-glass construction with an 80% +/- 5% bifaciality factor. Actual rear-side energy gain depends on installation and site conditions.
Q: What are the Voc and Vmp of the 630W panel?
A: Voc = 49.50V; Vmp = 41.52V at STC.
Q: What are the Isc and Imp of the 630W panel?
A: Isc = 16.12A; Imp = 15.10A at STC.
Q: What is the size of the DEVSOL 630W panel?
A: 2382 x 1133 x 35 mm (Length x Width x Thickness).
Q: What is the weight of the DEVSOL 630W panel?
A: 34.5 kg per module.
Q: What is the maximum system voltage?
A: 1500V DC.
Q: What is the maximum series fuse rating?
A: 35A.
Q: What is the Pmax temperature coefficient?
A: -0.2827%/degrees C. This means power output decreases by approximately 0.28% for every 1 degree C rise in cell temperature above 25 degrees C.
Q: Is the DEVSOL 630W panel suitable for Indian summers?
A: The panel has a Pmax temperature coefficient of -0.2827%/degrees C and operates within -40 degrees C to +85 degrees C. These are typical values for high-efficiency N-Type TOPCon modules suitable for Indian climate conditions.
Q: Is it suitable for residential rooftops?
A: It can be used where roof area, structural capacity, electrical design, mounting and inverter compatibility are suitable. Its large physical size (2382 x 1133 mm) and weight (34.5 kg) must be considered during structural assessment.
Q: Is it suitable for commercial and industrial solar projects?
A: Yes, subject to system engineering and project requirements. The 630W high power output and 1500V system rating make it suitable for commercial and industrial applications.
Q: Who manufactures the DEVSOL 630W solar panel?
A: Nexus Solar Energy Pvt. Ltd.
Q: What is the difference between TOPCon and HJT?
A: TOPCon (Tunnel Oxide Passivated Contact) and HJT (Heterojunction Technology) are different advanced N-Type cell architectures. See our detailed comparison: TOPCon vs HJT vs HDT guide.
Q: Does bifacial mean the panel will always give extra power from the rear side?
A: No. Bifacial panels can capture reflected irradiance from the rear, but actual gain depends on site conditions, mounting height, ground albedo and installation configuration.
Q: What inverter should be used with this 630W panel?
A: Inverter selection depends on Voc, Vmp, Isc, string length, MPPT voltage/current limits and cold-temperature Voc. Consult a qualified solar system designer for proper inverter matching.
Q: What is the price of the DEVSOL 630W solar panel in India?
A: Contact Nexus Solar Energy for current pricing based on quantity, location and project type.
Technical Data and Verification
This page publishes model-specific electrical and mechanical values for the DEVSOL 630W N-Type TOPCon module so buyers, EPC companies and installers can check inverter compatibility, structural dimensions and certification information before purchase. Final string sizing and installation must be completed according to the inverter limits, site conditions and applicable electrical standards.