REC Alpha Pure Series 410W All Black Solar Panel
REC Alpha Pure Series 410W All Black Solar Panel
The REC Alpha Pure 410 W is an REC heterojunction (HJT), lead-free gapless solar panel. REC's heterojunction cells combine crystalline and thin-film layers, which gives a low temperature coefficient and strong low-light performance. It delivers 22.2 % module efficiency from a 1,821 × 1,016 mm frame.
How to Join: It's easy, the first step is to register online and participate in REC Certification Training - check the training & events page for the next available date. After completing the training you'll receive an email to register on the REC ProPortal.
Comes supplied with Stäubli MC4 PV-KBT4/KST4 (4 mm²) connectors.
About the REC Alpha Pure range
Alpha Pure is REC's compact, lead-free heterojunction module. Its size and weight make it one of the easier high-efficiency panels to handle on a domestic roof.
At 1,821 × 1,016 mm it is a residential-format module, sized to fit the rafter spans and roof planes of a standard UK house. The black frame and dark cells keep the array visually quiet on a front-facing roof.
Why installers specify this panel
- −0.26 %/°C power temperature coefficient — the array keeps more of its rated output on hot days, when a UK roof can sit far above the 25 °C the nameplate figure is measured at.
- All-black appearance — a black anodised frame and dark cells, for domestic roofs where the array has to be discreet.
- Long-dated warranty — 20-year product and 25-year power warranty as standard (25/25/25 with REC ProTrust via a certified installer); 98 % in year 1, 0.25 % annual degradation, 92 % at year 25.
Electrical characteristics (STC)
| Rated power (Pmax) | 410 W |
| Module efficiency | 22.2 % |
| Open-circuit voltage (Voc) | 49.0 V |
| Voltage at maximum power (Vmp) | 42.7 V |
| Short-circuit current (Isc) | 10.35 A |
| Current at maximum power (Imp) | 9.61 A |
| Power tolerance | 0 / +5 W |
| Power density | 222 W/m² |
| Maximum system voltage | DC 1000 V |
| Maximum series fuse rating | 25 A |
STC: AM1.5, 1,000 W/m², 25 °C cell temperature.
Mechanical specification
| Cell technology | 132 half-cut REC heterojunction cells, lead-free gapless, 6 strings of 22 in series |
| Glass | 3.2 mm solar glass with anti-reflective treatment (EN 12150) |
| Backsheet | Highly resistant polymer (black) |
| Frame | Anodised aluminium (black) |
| Dimensions (H × W × D) | 1,821 × 1,016 × 30 mm (1.85 m²) |
| Dimensions | 1,821 × 1,016 × 30 mm (1.85 m2) |
| Weight | 20.5 kg |
| Junction box | 3-part, 3 bypass diodes, lead-free, IP68 (IEC 62790) |
| Connectors | Stäubli MC4 PV-KBT4 / KST4 (4 mm²) |
| Cable | 4 mm² solar cable, 1.1 m + 1.2 m |
| Origin | Made in Singapore |
Temperature and load ratings
| Temperature coefficient of Pmax | −0.26 %/°C |
| Temperature coefficient of Voc | −0.24 %/°C |
| Temperature coefficient of Isc | +0.04 %/°C |
| Operating temperature | −40 °C to +85 °C |
| Nominal module operating temperature | 44 °C ±2 °C |
| Maximum test load (front) | +7,000 Pa |
| Maximum test load (rear) | −4,000 Pa |
Warranty and certification
20-year product and 25-year power warranty as standard (25/25/25 with REC ProTrust via a certified installer); 98 % in year 1, 0.25 % annual degradation, 92 % at year 25. Certified to IEC 61215:2016, IEC 61730:2016, UL 61730, IEC 62804 (PID), IEC 61701 (salt mist), IEC 62716 (ammonia), IEC 62782 (dynamic mechanical load), IEC 61215-2:2016 (35 mm hailstone), IEC 62321 lead-free to RoHS EU 863/2015.
Array sizing
Each panel covers 1.85 m². A 4 kWp array needs 10 of them (4.10 kWp over about 19 m²). A 6 kWp array needs 15 of them (6.15 kWp over about 28 m²). Each module weighs 20.5 kg.
About REC
REC Group has been making solar panels since 1996. Headquartered in Norway with its operational base in Singapore, where these panels are manufactured, REC builds the Alpha series on its own heterojunction cell, using a lead-free, gapless construction that is RoHS compliant.
Datasheets, installation manuals and warranty documents for the REC Alpha Pure 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.
