JA Solar 465W Solar Panel

The JA Solar 465W Solar Panel (JAM54D40-465/LR) is a TOPCon panel converting 23.27% of the light that falls on it. The size most residential arrays are built from at the moment - a sensible balance between what a roof will hold and what it costs to mount.

Key Features & Specifications:

• 465 W at Standard Test Conditions - Power tolerance +3%, and 45 °C nominal operating cell temperature. Panels are measured at 1000 W/m² and 25 °C, which a roof in Gauteng sees on a cool clear morning and not much else - plan on somewhat less through the middle of a hot day.
• 108 Cells - Half-cut cells with a multi-busbar layout, which loses less to a shadow across one corner than an older full-cell panel does.
• Open-Circuit 40.2 V, Short-Circuit 14.65 A - At maximum power it sits at 33.5 V and 13.88 A. These four figures are what decide how many panels may go in a string and how many strings an MPPT input will take - a string designed without them is a guess.
• -0.29%/°C Temperature Coefficient - How much output is lost for every degree the cell rises above 25 °C. It is the figure that separates a panel that holds up on a hot afternoon from one that does not.
• 1500 V Maximum System Voltage - The ceiling for a whole string added together on the coldest morning, with a 25 A series fuse rating. Going over it is what damages an inverter input.
• Size and Weight - 1762 × 1134 × 30 mm, 22 kg. Worth measuring the roof against before ordering - the number of panels that fit is as often decided by the shape of the roof as by the size of the system.
• Also Worth Knowing - MBB, Half-Cell.

Part number JAM54D40-465/LR, from the JAM54D40 LR range. Ask us for the full datasheet, the warranty terms and a certificate of compliance before you commit to a system.