S SOLARSPECS
The JA Solar Ultra 420W is a high-performance IBC N-Type solar module engineered for professional installations. With its exceptional 23.33% efficiency rating, this panel maximizes power density for space-constrained installations. Backed by a comprehensive 25-year warranty, the Ultra 420W is built for decades of reliable energy production. Measuring 1855 x 1026 x 35 mm and weighing 20.0kg, the Ultra 420W is designed for efficient handling and installation.
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IBC N-Type

JA Solar Ultra 420W

Max Power
420W
Efficiency
23.33%
Operating V
34.4V
Warranty
25Y
JA Solar Ultra 420W logo
Technical Specifications
Open Circuit Voltage (Voc)42.1V
Short Circuit Current (Isc)12.94A
Voltage at Pmax (Vmp)34.4V
Current at Pmax (Imp)12.21A
Temp. Coefficient of Pmax-0.27%/°C
Dimensions1855 x 1026 x 35 mm
Weight20.0kg

FAQ

What is the power output of JA Solar Ultra 420W?

The JA Solar Ultra 420W produces up to 420W of maximum power under Standard Test Conditions (STC).

How efficient is the Ultra 420W?

The Ultra 420W has a module efficiency of 23.33%, placing it in the top tier of commercial solar panels available in 2026.

What warranty does JA Solar offer?

JA Solar provides a 25-year warranty for the Ultra 420W, covering product defects and performance guarantees.

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