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JA Solar 465W N-type Double Glass Bifacial LB Traceable Low carbon MC4-EVO2 connectors Black Frame Solar Panel
JA Solar 465W N-type Double Glass Bifacial LB Traceable Low carbon MC4-EVO2 connectors Black Frame Solar Panel
The JA Solar JAM54D40 LB 465 W is an N-type mono solar panel. It delivers 23.3 % module efficiency from a 1,762 × 1,134 mm frame.
About the JA Solar Deep Blue 4.0 Pro range
Deep Blue 4.0 Pro is JA Solar's n-type platform, using Bycium+ cells with a better temperature coefficient, lower light-induced degradation and improved low-light behaviour than the p-type modules it replaces.
At 1,762 × 1,134 mm it is a residential-format module, sized to fit the rafter spans and roof planes of a standard UK house. Being bifacial, it earns most of its extra yield on flat roofs, ground mounts and light-coloured surfaces, where light reaches the back of the module; on a pitched tiled roof the rear-side gain is small.
Why installers specify this panel
- −0.290 %/°C power temperature coefficient — output falls away more slowly as the modules heat up through the middle of the day.
- Bifacial, 80 % ±5 % — the rear face adds generation from reflected and diffuse light, which suits flat roofs, ground mounts and light-coloured surfaces.
- All-black appearance — a black anodised frame and dark cells, for domestic roofs where the array has to be discreet.
- 0 to +3 % power tolerance — every module is sorted to meet or beat its 465 W nameplate rating.
Electrical characteristics (STC)
| Rated power (Pmax) | 465 W |
| Module efficiency | 23.3 % |
| Open-circuit voltage (Voc) | 40.20 V |
| Voltage at maximum power (Vmp) | 33.50 V |
| Short-circuit current (Isc) | 14.65 A |
| Current at maximum power (Imp) | 13.88 A |
| Power tolerance | 0 to +3 % |
| Power at BNPI | 513 W |
| Maximum system voltage | DC 1500 V |
| Maximum series fuse rating | 30 A |
STC: AM1.5, 1,000 W/m², 25 °C cell temperature.
Mechanical specification
| Cell technology | N-type mono |
| Number of cells | 108 (6 × 18) |
| Front glass | 1.6 mm, anti-reflective coating |
| Back glass | 1.6 mm, heat-strengthened |
| Frame | Anodised aluminium alloy |
| Dimensions (H × W × D) | 1,762 × 1,134 × 30 mm |
| Weight | 21.4 kg |
| Junction box | IP68, 3 bypass diodes |
| Connector | MC4-EVO2A |
| Cable | 4 mm² (IEC), 12 AWG (UL) |
Temperature and load ratings
| Temperature coefficient of Pmax | −0.290 %/°C |
| Temperature coefficient of Voc | −0.250 %/°C |
| Temperature coefficient of Isc | +0.045 %/°C |
| Operating temperature | −40 °C to +70 °C |
| NOCT | 45 ±2 °C |
| Maximum static load | 5,400 Pa front / 2,400 Pa back |
| Fire performance | UL Type 38 / Class C |
Array sizing
Each panel covers 2.00 m². A 4 kWp array needs 9 of them (4.18 kWp over about 18 m²). A 6 kWp array needs 13 of them (6.04 kWp over about 26 m²). Each module weighs 21.4 kg.
About JA Solar
JA Solar is one of the highest-volume module manufacturers in the industry. Its Deep Blue 4.0 Pro platform uses n-type Bycium+ cells with 16-busbar half-cell interconnection, and carries IEC 61215, IEC 61730, UL 61215 and UL 61730 certification alongside ISO 9001, ISO 14001, ISO 45001 and IEC 62941.
Datasheets, installation manuals and warranty documents for the JA Solar JAM54D40 LB are in the Documents tab below. Buying for a project? Contact our sales team at sales@clearraysolar.com for pallet pricing.
Almost any modern string inverter will run it - what matters is the string design. Check the panel's Voc and Isc in the Technical Specifications against your inverter's MPPT voltage window and maximum input current, or send us your inverter model and we'll size it for you.
Divide your inverter's maximum input voltage by the panel's open-circuit voltage (Voc), then leave headroom - Voc rises as temperature falls, so size for the coldest morning rather than the average day.
Panels ship with their factory leads fitted; the connector type and cable length are both listed in the Technical Specifications. Extension leads and additional connectors are ordered separately.
Bypass diodes limit the loss to the affected section rather than the whole panel. Where shading is persistent, panel-level optimisers or micro-inverters recover considerably more yield - ask us and we'll spec it.
The product and performance warranties are listed under the Warranty tab in Technical Specifications, and the manufacturer's full terms are in the Documents section.
Yes. Pallet quantities are available on stocked lines and work out cheaper per panel - contact us with your requirements for a project quote.
Build your complete solar system
Everything you need in one place.
- Inverters
- Batteries
- Mounting Systems
- Cabling & Accessories
- Protection Devices
Delivery times vary by region:
- UK — 1-2 business days
- Highlands & Islands — 1-2 business days
Returns accepted within 14 days of delivery for unused items in original packaging.
