≥ 8
Alexus Solar 400W Black on Black 108 Half-Cell Mono Solar Panel ALEX-400-B-54-S
MPN No: ALEX-400-B-54-S
Expected ship date May 24 - 31
In Stock
139.60
-14%
$119.99
Sale
Alexus Solar 400W Black on Black 108 Half-Cell Mono Solar Panel ALEX-400-B-54-S
Alexus Solar 400W Black on Black 108 Half-Cell Mono Solar Panel ALEX-400-B-54-S
Regular price
$139.60
-14%
$119.99
$0.29/watt
14% OFF
1339 IN STOCK
Sale
Alexus Solar 400W Black on Black 108 Half-Cell Mono Solar Panel ALEX-400-B-54-S
Alexus Solar 400W Black on Black 108 Half-Cell Mono Solar Panel ALEX-400-B-54-S
Available
MPN No: ALEX-400-B-54-S
Regular price
$139.60
-14%
$119.99
$0.29/watt
Expected ship date May 24 - 31
We offer multiple secure payment options for your convenience
We offer multiple secure payment options for your convenience
Data Sheet
Regular price
$139.60
-14%
$119.99
Alexus Solar 400W Black on Black 108 Half-Cell Mono Solar Panel ALEX-400-B-54-S
MPN No:
ALEX-400-B-54-S
Expected ship date May 24 - 31
Sale
≥ 8
Alexus Solar 400W Black on Black 108 Half-Cell Mono Solar Panel ALEX-400-B-54-S
Built with proven PERC cell technology and a clean full-black finish, the Alexus Solar 400W module delivers reliable residential performance with strong efficiency and long-term durability.
Designed as part of the Alexus 108 Series, this panel balances output, aesthetics, and cost—making it a solid choice for rooftop systems where both performance and appearance matter.
Key Benefits
- 400W output ideal for residential system sizing
- Full black module design for a clean, uniform roofline
- Up to 21.0% module efficiency for strong energy production
- Lower temperature coefficient for better performance in heat
- PID-resistant design for long-term reliability
- Excellent durability with high wind (2400 Pa) and snow load (5400 Pa) ratings
- Resistant to salt mist, ammonia, dust, and harsh environments
Typical Applications
- Residential rooftop solar systems
- Grid-tied home energy systems
- Small commercial installations
- Projects requiring clean aesthetics (HOA-sensitive installs)
- Harsh or coastal environments
Why This Panel Works
This Alexus Solar module uses monocrystalline PERC half-cell technology, which improves efficiency and reduces internal resistance—leading to better real-world performance, especially under partial shading.
The full-black design gives you a more refined install visually, while the panel’s lower temperature coefficient (-0.34%/°C) helps maintain output in hotter climates where standard modules can lose efficiency .
On the durability side, the panel is built to handle tough conditions—tested against salt mist, ammonia, dust, and mechanical loads—making it a dependable option across a wide range of environments.
Specifications
| Specification | Value |
|---|---|
| Model | ALEX-400-B-54-S |
| Rated Power (Pmax) | 400W |
| Cell Type | Monocrystalline PERC |
| Cell Configuration | 108 Half-Cell |
| Module Efficiency | 20.5% |
| Voltage at Max Power (Vmp) | 31.18V |
| Current at Max Power (Imp) | 12.83A |
| Open Circuit Voltage (Voc) | 37.21V |
| Short Circuit Current (Isc) | 13.67A |
| Dimensions (L x W x H) | 67.8 x 44.6 x 1.2 inches |
| Weight | 46.3 lbs |
| Glass | 3.2 mm fully tempered glass |
| Junction Box | IP68, 3 bypass diodes |
| Max System Voltage | 1500V DC |
| Max Series Fuse Rating | 25A |
| Operating Temp Range | -40°F to 185°F equivalent (-40°C to +85°C) |
Certifications
- UL 61730 / ETL / CEC listed
- IEC 61215, IEC 61730
- PID, Salt Mist, Ammonia, Dust & Sand tested
- Fire Type 1 rating
Warranty
- 25-Year Product Warranty
- 25-Year Linear Performance Warranty with strong degradation curve
About Alexus Solar
Alexus Solar is a U.S.-based solar brand focused on delivering high-performance modules backed by rigorous testing standards and modern manufacturing practices. With a focus on durability, efficiency, and real-world reliability, Alexus panels are designed to perform across residential and commercial applications.
