
JA Solar 500W Mono PERC MBB Traceable Single Glass 66 cell Silver Frame MC4 Solar Panel
The JA Solar JAM66S30 MR 500 W is an Mono PERC solar panel. PERC cells add a rear passivation layer that reflects unabsorbed light back through the silicon for a second pass. It delivers 21.1 % module efficiency from a 2,093 × 1,134 mm frame.
About the JA Solar Mono PERC range
At 2,093 mm tall and 2.37 m² this is a commercial-format module, intended for warehouse and barn roofs, ground mounts and solar farms where the extra length is not a constraint. It is usually too long for a typical domestic roof plane.
Why installers specify this panel
- −0.350 %/°C power temperature coefficient — output falls away more slowly as the modules heat up through the middle of the day.
- 0 to +5 W power tolerance — every module is sorted to meet or beat its 500 W nameplate rating.
Electrical characteristics (STC)
| Rated power (Pmax) | 500 W |
| Module efficiency | 21.1 % |
| Open-circuit voltage (Voc) | 45.59 V |
| Voltage at maximum power (Vmp) | 38.35 V |
| Short-circuit current (Isc) | 13.93 A |
| Current at maximum power (Imp) | 13.04 A |
| Power tolerance | 0 to +5 W |
| Maximum system voltage | DC 1000 V / 1500 V |
| Maximum series fuse rating | 25 A |
STC: AM1.5, 1,000 W/m², 25 °C cell temperature.
Mechanical specification
| Cell technology | Mono PERC |
| Number of cells | 132 (6 × 22) |
| Dimensions (H × W × D) | 2,093 × 1,134 × 30 mm |
| Weight | 26.3 kg |
| Junction box | IP68, 3 bypass diodes |
| Connector | MC4-EVO2 |
| Cable | 4 mm² (IEC), 12 AWG (UL) |
Temperature and load ratings
| Temperature coefficient of Pmax | −0.350 %/°C |
| Temperature coefficient of Voc | −0.275 %/°C |
| Temperature coefficient of Isc | +0.045 %/°C |
| Operating temperature | −40 °C to +85 °C |
| NOCT | 45 ±2 °C |
| Maximum static load | 5,400 Pa front / 2,400 Pa back |
| Fire performance | UL Type 1 |
Array sizing
Each panel covers 2.37 m². A 4 kWp array needs 8 of them (4.00 kWp over about 19 m²). A 6 kWp array needs 12 of them (6.00 kWp over about 28 m²). At 26.3 kg each they are a two-person lift.
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 JAM66S30 MR are in the Documents tab below. Buying for a project? Contact our sales team at sales@clearraysolar.com for pallet pricing.
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.


