Viridian ArcBox Solar Connector Enclosure | VIR-ARC04-01 | DC Arc Fault Containment | KIWA Fire Tested
Viridian ArcBox Solar Connector Enclosure | VIR-ARC04-01 | DC Arc Fault Containment | KIWA Fire Tested
Fire Safety Enclosure DC Arc Fault Containment KIWA Fire Tested Loughborough University Verified BIPV / Combustible Roofs Patented Design Single Unit
The Viridian ArcBox (VIR-ARC04-01) is a patented solar connector safety enclosure designed to contain DC arc faults before they ignite combustible materials in or around a solar PV installation. Solar DC connectors — particularly manually crimped field joints — are a well-documented ignition source in solar-related fires. When a faulty connection arcs, it generates temperatures far in excess of the melting point of metals. The ArcBox encloses the connector within a high-temperature refractory lining material previously available only as crucible and furnace components — engineered by Viridian Solar into the compact snap-fit form required for a DC connector enclosure. Its effectiveness has been independently verified by KIWA (fire tested to NEN 6063 — over 5 minutes of sustained arcing without fire spread) and by the Department of Engineering at Loughborough University. Sold individually.
Key Features
- ✓Contains DC arc faults — refractory lining withstands 5+ minutes sustained arcing (NEN 6063) without fire spreading to surrounding materials
- ✓High-temperature refractory lining — material from crucibles and furnaces; far exceeds the thermal performance of plastic or polymer enclosures
- ✓Patented snap-fit design — two hinged halves click together around the connector in seconds, no tools required
- ✓Suspends connector in free air — between cable sealing grommets, preventing heat transfer to surrounding materials
- ✓Ventilation and drainage ports — maintains connector operating temperature within manufacturer's guidelines; prevents moisture accumulation
- ✓KIWA fire tested — NEN 6063 — over 5 minutes sustained arcing, no spread of fire to surrounding roofing materials
- ✓Loughborough University verified — Engineering Dept. confirmed thermal performance within connector manufacturer's limits under rated load
- ✓Ideally used on manually crimped joints — highest-risk connector in a solar string; minimum of two per string recommended
- ✓Fits standard MC4-format connectors — compatible with the vast majority of solar PV wiring
- ✓Key applications: BIPV, combustible roofs, high-consequence locations
- ✓No tools required — snap-fit installation takes seconds per connector
- ✓Weather resistant — suitable for exposed outdoor use in UK and European climate conditions
🔥 Why arc faults matter: DC arcs in solar wiring are one of the leading causes of solar-related building fires. Common causes: poorly crimped joints, cross-mating connectors from different manufacturers, wet assembly, and incomplete insertion. DC arcs are sustained by constant panel current and cannot self-extinguish the way AC arcs can.
What's Included
✔1 × ArcBox enclosure (hinged, snap-fit) ✔High-temperature refractory inner lining ✔Cable sealing grommets (pre-fitted) ✔Ventilation and drainage ports (integrated)
Specifications
| Specification | Unit | Value |
|---|---|---|
| Part Number | VIR-ARC04-01 | |
| Manufacturer | Viridian Solar Ltd | |
| Function | Solar DC connector arc fault containment enclosure | |
| Lining Material | High-temperature refractory (crucible / furnace grade) | |
| Outer Casing | Hinged, snap-fit two-part enclosure | |
| Connector Compatibility | Standard MC4-format DC connectors | |
| Fire Test Standard | NEN 6063 — tested by KIWA fire test laboratory | |
| Fire Test Result | >5 minutes sustained arcing without spread of fire | |
| Thermal Verification | Loughborough University — within connector manufacturer's temperature limits under rated current load | |
| Installation | Tool-free snap-fit — no modification to connector or cable required | |
| Quantity in Listing | 1 unit (sold individually) | |
| Key Applications | BIPV, combustible roofs, high-consequence locations, any solar PV installation |
💡 How many ArcBoxes per installation? Minimum of two per string — one at each manually crimped connector. In BIPV applications or on combustible roofing, one per connector is strongly recommended and may be required for insurance compliance.
Frequently Asked Questions
QWhat causes arc faults in solar connectors?
Most common causes: poorly crimped joints (high resistance → arcing); cross-mating connectors from different brands; assembling connectors while wet; and incomplete insertion that fails to engage the locking mechanism.
QCan ArcBox be retrofitted to an existing installation?
Yes. The snap-fit design allows it to be fitted to existing connectors without any modification. It can equally be opened for inspection and refitted at any time.
QDoes ArcBox prevent arc faults from occurring?
No — it contains the arc so that if a fault occurs, the thermal energy is enclosed within the refractory lining and cannot ignite surrounding materials. Correct installation practice remains essential.
QWhat connectors is the ArcBox designed for?
Standard MC4-format DC connectors used by the vast majority of solar panel manufacturers. Particularly recommended on manually crimped field connectors.
QIs the ArcBox required for planning or insurance purposes?
Requirements vary. For BIPV installations on combustible roofing, some local authorities and insurers require connector-level fire protection. The KIWA certification and Loughborough verification provide documented evidence for compliance submissions.
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Viridian ArcBox Solar Connector Enclosure | VIR-ARC04-01 | DC Arc Fault Containment | KIWA Fire Tested
Fire Safety Enclosure DC Arc Fault Containment KIWA Fire Tested Loughborough University Verified BIPV / Combustible Roofs Patented Design Single Unit
The Viridian ArcBox (VIR-ARC04-01) is a patented solar connector safety enclosure designed to contain DC arc faults before they ignite combustible materials in or around a solar PV installation. Solar DC connectors — particularly manually crimped field joints — are a well-documented ignition source in solar-related fires. When a faulty connection arcs, it generates temperatures far in excess of the melting point of metals. The ArcBox encloses the connector within a high-temperature refractory lining material previously available only as crucible and furnace components — engineered by Viridian Solar into the compact snap-fit form required for a DC connector enclosure. Its effectiveness has been independently verified by KIWA (fire tested to NEN 6063 — over 5 minutes of sustained arcing without fire spread) and by the Department of Engineering at Loughborough University. Sold individually.
Key Features
- ✓Contains DC arc faults — refractory lining withstands 5+ minutes sustained arcing (NEN 6063) without fire spreading to surrounding materials
- ✓High-temperature refractory lining — material from crucibles and furnaces; far exceeds the thermal performance of plastic or polymer enclosures
- ✓Patented snap-fit design — two hinged halves click together around the connector in seconds, no tools required
- ✓Suspends connector in free air — between cable sealing grommets, preventing heat transfer to surrounding materials
- ✓Ventilation and drainage ports — maintains connector operating temperature within manufacturer's guidelines; prevents moisture accumulation
- ✓KIWA fire tested — NEN 6063 — over 5 minutes sustained arcing, no spread of fire to surrounding roofing materials
- ✓Loughborough University verified — Engineering Dept. confirmed thermal performance within connector manufacturer's limits under rated load
- ✓Ideally used on manually crimped joints — highest-risk connector in a solar string; minimum of two per string recommended
- ✓Fits standard MC4-format connectors — compatible with the vast majority of solar PV wiring
- ✓Key applications: BIPV, combustible roofs, high-consequence locations
- ✓No tools required — snap-fit installation takes seconds per connector
- ✓Weather resistant — suitable for exposed outdoor use in UK and European climate conditions
🔥 Why arc faults matter: DC arcs in solar wiring are one of the leading causes of solar-related building fires. Common causes: poorly crimped joints, cross-mating connectors from different manufacturers, wet assembly, and incomplete insertion. DC arcs are sustained by constant panel current and cannot self-extinguish the way AC arcs can.
What's Included
✔1 × ArcBox enclosure (hinged, snap-fit) ✔High-temperature refractory inner lining ✔Cable sealing grommets (pre-fitted) ✔Ventilation and drainage ports (integrated)
Specifications
| Specification | Unit | Value |
|---|---|---|
| Part Number | VIR-ARC04-01 | |
| Manufacturer | Viridian Solar Ltd | |
| Function | Solar DC connector arc fault containment enclosure | |
| Lining Material | High-temperature refractory (crucible / furnace grade) | |
| Outer Casing | Hinged, snap-fit two-part enclosure | |
| Connector Compatibility | Standard MC4-format DC connectors | |
| Fire Test Standard | NEN 6063 — tested by KIWA fire test laboratory | |
| Fire Test Result | >5 minutes sustained arcing without spread of fire | |
| Thermal Verification | Loughborough University — within connector manufacturer's temperature limits under rated current load | |
| Installation | Tool-free snap-fit — no modification to connector or cable required | |
| Quantity in Listing | 1 unit (sold individually) | |
| Key Applications | BIPV, combustible roofs, high-consequence locations, any solar PV installation |
💡 How many ArcBoxes per installation? Minimum of two per string — one at each manually crimped connector. In BIPV applications or on combustible roofing, one per connector is strongly recommended and may be required for insurance compliance.
Frequently Asked Questions
QWhat causes arc faults in solar connectors?
Most common causes: poorly crimped joints (high resistance → arcing); cross-mating connectors from different brands; assembling connectors while wet; and incomplete insertion that fails to engage the locking mechanism.
QCan ArcBox be retrofitted to an existing installation?
Yes. The snap-fit design allows it to be fitted to existing connectors without any modification. It can equally be opened for inspection and refitted at any time.
QDoes ArcBox prevent arc faults from occurring?
No — it contains the arc so that if a fault occurs, the thermal energy is enclosed within the refractory lining and cannot ignite surrounding materials. Correct installation practice remains essential.
QWhat connectors is the ArcBox designed for?
Standard MC4-format DC connectors used by the vast majority of solar panel manufacturers. Particularly recommended on manually crimped field connectors.
QIs the ArcBox required for planning or insurance purposes?
Requirements vary. For BIPV installations on combustible roofing, some local authorities and insurers require connector-level fire protection. The KIWA certification and Loughborough verification provide documented evidence for compliance submissions.
Product Information
Product Information
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Description
Fire Safety Enclosure DC Arc Fault Containment KIWA Fire Tested Loughborough University Verified BIPV / Combustible Roofs Patented Design Single Unit
The Viridian ArcBox (VIR-ARC04-01) is a patented solar connector safety enclosure designed to contain DC arc faults before they ignite combustible materials in or around a solar PV installation. Solar DC connectors — particularly manually crimped field joints — are a well-documented ignition source in solar-related fires. When a faulty connection arcs, it generates temperatures far in excess of the melting point of metals. The ArcBox encloses the connector within a high-temperature refractory lining material previously available only as crucible and furnace components — engineered by Viridian Solar into the compact snap-fit form required for a DC connector enclosure. Its effectiveness has been independently verified by KIWA (fire tested to NEN 6063 — over 5 minutes of sustained arcing without fire spread) and by the Department of Engineering at Loughborough University. Sold individually.
Key Features
- ✓Contains DC arc faults — refractory lining withstands 5+ minutes sustained arcing (NEN 6063) without fire spreading to surrounding materials
- ✓High-temperature refractory lining — material from crucibles and furnaces; far exceeds the thermal performance of plastic or polymer enclosures
- ✓Patented snap-fit design — two hinged halves click together around the connector in seconds, no tools required
- ✓Suspends connector in free air — between cable sealing grommets, preventing heat transfer to surrounding materials
- ✓Ventilation and drainage ports — maintains connector operating temperature within manufacturer's guidelines; prevents moisture accumulation
- ✓KIWA fire tested — NEN 6063 — over 5 minutes sustained arcing, no spread of fire to surrounding roofing materials
- ✓Loughborough University verified — Engineering Dept. confirmed thermal performance within connector manufacturer's limits under rated load
- ✓Ideally used on manually crimped joints — highest-risk connector in a solar string; minimum of two per string recommended
- ✓Fits standard MC4-format connectors — compatible with the vast majority of solar PV wiring
- ✓Key applications: BIPV, combustible roofs, high-consequence locations
- ✓No tools required — snap-fit installation takes seconds per connector
- ✓Weather resistant — suitable for exposed outdoor use in UK and European climate conditions
🔥 Why arc faults matter: DC arcs in solar wiring are one of the leading causes of solar-related building fires. Common causes: poorly crimped joints, cross-mating connectors from different manufacturers, wet assembly, and incomplete insertion. DC arcs are sustained by constant panel current and cannot self-extinguish the way AC arcs can.
What's Included
✔1 × ArcBox enclosure (hinged, snap-fit) ✔High-temperature refractory inner lining ✔Cable sealing grommets (pre-fitted) ✔Ventilation and drainage ports (integrated)
Specifications
| Specification | Unit | Value |
|---|---|---|
| Part Number | VIR-ARC04-01 | |
| Manufacturer | Viridian Solar Ltd | |
| Function | Solar DC connector arc fault containment enclosure | |
| Lining Material | High-temperature refractory (crucible / furnace grade) | |
| Outer Casing | Hinged, snap-fit two-part enclosure | |
| Connector Compatibility | Standard MC4-format DC connectors | |
| Fire Test Standard | NEN 6063 — tested by KIWA fire test laboratory | |
| Fire Test Result | >5 minutes sustained arcing without spread of fire | |
| Thermal Verification | Loughborough University — within connector manufacturer's temperature limits under rated current load | |
| Installation | Tool-free snap-fit — no modification to connector or cable required | |
| Quantity in Listing | 1 unit (sold individually) | |
| Key Applications | BIPV, combustible roofs, high-consequence locations, any solar PV installation |
💡 How many ArcBoxes per installation? Minimum of two per string — one at each manually crimped connector. In BIPV applications or on combustible roofing, one per connector is strongly recommended and may be required for insurance compliance.
Frequently Asked Questions
QWhat causes arc faults in solar connectors?
Most common causes: poorly crimped joints (high resistance → arcing); cross-mating connectors from different brands; assembling connectors while wet; and incomplete insertion that fails to engage the locking mechanism.
QCan ArcBox be retrofitted to an existing installation?
Yes. The snap-fit design allows it to be fitted to existing connectors without any modification. It can equally be opened for inspection and refitted at any time.
QDoes ArcBox prevent arc faults from occurring?
No — it contains the arc so that if a fault occurs, the thermal energy is enclosed within the refractory lining and cannot ignite surrounding materials. Correct installation practice remains essential.
QWhat connectors is the ArcBox designed for?
Standard MC4-format DC connectors used by the vast majority of solar panel manufacturers. Particularly recommended on manually crimped field connectors.
QIs the ArcBox required for planning or insurance purposes?
Requirements vary. For BIPV installations on combustible roofing, some local authorities and insurers require connector-level fire protection. The KIWA certification and Loughborough verification provide documented evidence for compliance submissions.
