JA Solar panels in Melbourne: DeepBlue 4.0 specs and warranty

JA Solar DeepBlue 4.0: datasheet specs

These figures come from JA’s Australian datasheet for the JAM54D40 410-435/MB/1500V (AUS_EN_20230804A, dated 4 August 2023). It lists 6 ratings from 410 to 435 W in 5 W steps, all the same 1,722 × 1,134 mm panel of about 1.95 m². It is the Australian datasheet we could read from JA’s own site, but we couldn’t confirm it is JA’s current range: the Clean Energy Council’s list has no MB model and carries other JAM54D40 versions, first approved in June 2024 (see which).

Model

JAM54D40-410/MB/1500V to JAM54D40-435/MB/1500V

Efficiency

21.0% (410 W) to 22.3% (435 W)

Power tolerance

0 to +5 W of the rating

Cells

108 cells (6 × 18), n-type monocrystalline, 16 busbars (SMBB), half-cut cells

Size and weight

1,722 × 1,134 × 30 mm, 21.5 kg

Glass and rear side

1.6 mm front, 1.6 mm back; bifacial, rear rated at 80% ± 10% of the front

Temperature coefficients

Power −0.300%/°C, voltage −0.260%/°C, current +0.046%/°C

Nominal operating cell temperature (NOCT)

45 ± 2°C

Static load

Front 2,400 Pa, back 1,600 Pa (safety factor 1.5); the datasheet prints no hail rating

Working range

−40°C to +85°C; maximum system voltage 1500 V DC

Fire class and junction box

Class C; junction box IP68, 3 diodes

Certificates

IEC 61215 and IEC 61730

Country of manufacture

China/Vietnam

Source: JA Solar JAM54D40 410-435/MB/1500V datasheet, version AUS_EN_20230804A, checked November 2026.

Panel sizes compared

How efficient are JA Solar panels in Melbourne’s heat?

A kilowatt of panels makes about 1,419 kWh a year on a north-facing Melbourne roof, going by the PVGIS model for Mount Waverley, Melbourne (20° tilt, 14% system losses). So one 435 W DeepBlue 4.0 makes about 617 kWh a year: around 2.3 kWh on an average January day and 0.9 kWh in June. The model treats every silicon panel alike, so it doesn’t count the differences in heat loss below.

Efficiency is the share of the sunlight landing on a panel that it turns into electricity. The datasheet runs from 21.0% at 410 W to 22.3% at 435 W. Every rating is the same size, so a higher rating puts more watts on the same patch of roof.

On hot Melbourne days

The Bureau of Meteorology’s Melbourne (Olympic Park) station has averaged 33.2 days a year at 30°C or more and 9.2 at 35°C or more (2013 to 2026). Panels are rated with their cells at 25°C, and the DeepBlue 4.0 gives up 0.3% of its power for every degree above that: about 3.0% for every 10 degrees. Under the standard NOCT conditions (800 W/m² of sunlight, 20°C air, a 1 m/s breeze) the datasheet puts the cells at 45°C, which costs about 6%; on a 35°C afternoon they run hotter still. How the other panels compare

Light on the back

Because the back is glass too, light reflected onto it adds power. JA rates the rear at 80% ± 10% of the front, and when the back gets 10% as much light as the front the 435 W panel is rated 470 W, 35 W more. How much a roof gives depends on how much light reaches the back, and JA’s power warranty covers the front side only.

Over the years

JA’s warranty statement sets how fast the JAM54D40 may age: no more than 1% lost in the first year, then no more than 0.4% a year, leaving at least 87.4% of the rated power after 30 years.

Solar panel efficiency explained

What does the JA Solar warranty cover?

In short: a 25-year product warranty for Australian home rooftops per JA’s datasheet, subject to its warranty statement (base term 12 years); power warranted to 87.4% after 30 years. The two documents don’t say quite the same thing. JA’s Australian datasheet advertises 25 years for panels “installed and operating on residential rooftops in Australia”, subject to its warranty statement. The statement JA publishes for Australia (warranty-australia CEC-20230411-2, in effect from 1 September 2022) sets 144 months, 12 years, and has no 25-year clause. Ask for the 25 years in writing on your quote.

• When it starts: the date the panels are first delivered to you, or six months after they leave JA’s factory, whichever is earlier.
• If you sell the house: the warranty can pass to a new owner on written notice to JA Solar, as long as the panels stay where they were first installed and nothing is still owing under the supply contract.
• Exclusions include: panels moved and re-installed anywhere other than where they were first installed; installation or servicing by people without the relevant qualifications; extreme environments, including extreme heat and salty air (the statement’s example is a marine environment); natural disasters, including lightning, hail and storms; changes in appearance, and normal wear and tear.
• What JA does: for a faulty panel it can repair the panels, replace them or refund the purchase price less 3.33% a year for double-glass panels; for a shortfall in power it can repair or replace the panels, add panels to make up the lost watts or refund on the same depreciated basis. Under the statement, taking panels off the roof and refitting them is the owner’s cost.
• How to claim: written notice to service.au@jasolar.com and services@jasolar.com (the statement names both) within 14 days of noticing the fault, with proof of purchase, the model and serial numbers, the warranty start date and the installation address. Australian buyers may send claims to JA Solar Australia Pty Ltd, C-PKF Newcastle, 755 Hunter Street, Newcastle West NSW 2302 (+61 2 8328 0488).

All of this sits on top of your rights under the Australian Consumer Law. The statement itself says: “Our goods come with guarantees that cannot be excluded under the Australian Consumer Law.”

How solar warranties work

Makers’ Australian support contacts

Which JA Solar panels are approved in Australia?

STCs, the federal rebate on your quote, need panels on the Clean Energy Council’s approved list. We searched the Clean Energy Council approved modules list for JAM54D40 on 5 November 2026. No JAM54D40 MB model is on it, so none of the datasheet’s 410 to 435 W ratings is listed today. The list has 14 JAM54D40 entries from 440 to 475 W in LB, LR or LR/AU versions, all certified by TÜV SÜD Product Service GmbH (certificate Z2 114228 0003); the earliest-expiring listings run to 18 June 2027.

If a quote names a JAM54D40 panel, check that its full model code, suffix included (such as JAM54D40-475/LR/AU), is on the list. We haven’t read JA’s datasheets for the LB, LR or LR/AU versions, so this page doesn’t give their specs.

How STCs cut the price

JA Solar vs the other panels we list

Here is the DeepBlue 4.0 from JA’s Australian datasheet beside the other panels we list, using each maker’s own datasheet and warranty terms. Our previous site listed these brands; your quote confirms the exact model.

• Efficiency: every other range here reaches a higher top efficiency than the DeepBlue 4.0’s 22.3%, so it needs a little more roof for the same watts.
• Heat: Canadian Solar TOPHiKu6 (0.29%), REC Alpha Pure-RX (0.24%), Winaico NCX48 glass-glass (0.28%), Phono Solar Helios (0.26%) and Phono Solar Quasar (0.26%) lose less power per degree than the DeepBlue 4.0 (0.3%), so they give up a little less on hot afternoons.
• Warranty: Winaico NCX48 glass-glass, Phono Solar Helios and Phono Solar Quasar carry a longer product warranty than the DeepBlue 4.0’s 25 years on the datasheet (12 in JA’s statement). REC Alpha Pure-RX (92% after 25 years), Phono Solar Helios (88% after 30 years) and Phono Solar Quasar (88.5% after 30 years) guarantee more power at the end of the performance warranty.
• Weight: at 21.5 kg, the DeepBlue 4.0 is the lightest panel in this table.

Canadian Solar panels in detail

REC solar panels in detail

All the panels we list

Roof space and price for a JA Solar system

Our package cards count panels, not brands: the 6.6kW package lists 16 panels of about 413 W. With 410 to 435 W panels from JA’s datasheet the same system takes about 15 to 16 panels (6.53 to 6.56 kW), covering about 29 to 31 m² of roof before gaps and edge clearances. Your quote gives the exact count and confirms the panel brand. The 6.6kW system in detail.

Market data, not our price: the Solar Choice Price Index puts typical panels at about $80 to $300 or more each (October 2026), depending on the brand and wattage. The panels are only part of a system’s price; the solar panel cost guide covers the rest.

See our solar and battery packages

What to check on a JA Solar quote

1. The full model code, suffix included. JAM54D40-435/MB/1500V is the datasheet’s version; JAM54D40-475/LR/AU is one on the approved list, which STCs need.
2. The product warranty in writing. The datasheet says 25 years on Australian home rooftops, the warranty statement 12. Ask the quote or invoice to state which applies to your panels.
3. The inverter. The quote should name the inverter the panels feed, sized for the array. See how solar inverters compare.
4. An accredited installer. The person who designs and installs the system must be accredited by Solar Accreditation Australia (SAA) and hold an unrestricted electrical licence in Victoria. Without that, the system cannot earn STCs, so the rebate on your quote depends on it. JA’s warranty also excludes panels installed by people without the relevant qualifications.
5. Paperwork for later. Keep the invoice and the panels’ serial numbers: JA wants a claim in writing within 14 days of noticing a fault, with both.

How to choose a solar installer

JA Solar panels: your questions