EzSolar FORTIS 100 PV Junction Box - Asphalt Shingle JB-F.100 (Previously JB-1.2)
MPN No: JB-F.100
Expected ship date Jun 10 - 17
In Stock
$37.43
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JB-F.100
MPN No: JB-F.100
Expected ship date Jun 10 - 17
In Stock
$37.43
The EZ Solar JB-F.100 Fortis 100 is a roof-mounted PV junction box designed for composition and asphalt shingle roof applications.
Built for reliable field wiring and durable rooftop performance, this enclosure supports high-voltage solar installations while providing a Type 3R weather-resistant housing for demanding outdoor conditions.
With a maximum voltage rating of 1,500 VDC / 450 VAC, a maximum current capacity of 80 A, and a 100 in³ interior volume, the JB-F.100 is engineered to simplify conductor management and rooftop transitions in photovoltaic systems. It supports a wide wire range and is suitable for roof slopes from 2.5:12 to 12:12.
Type 3R Weather-Resistant Enclosure
Designed for outdoor rooftop use with reliable protection against environmental exposure.
High-Voltage PV Compatibility
Supports solar applications up to 1,500 VDC / 450 VAC for modern PV systems.
80 Amp Current Capacity
Fortis-60 and Fortis-100 models are rated for up to 80 amps.
Flexible Wire Acceptance
Accommodates conductor sizes from 14 AWG to 6 AWG for installation versatility.
Roof-Mount Optimized Design
Engineered specifically for composition and asphalt shingle roofs with a supported slope range of 2.5:12 to 12:12.
100 in³ Interior Volume
Provides generous internal space for conductor routing and junction management.
PV Roof Junction Applications
Ideal for rooftop conductor transitions and junction points in photovoltaic systems.
Composition Shingle Roof Installations
Designed specifically for composition and asphalt shingle roofing systems.
Residential Solar Installations
Suitable for home solar arrays requiring a weather-resistant rooftop junction enclosure.
| Specification | Details |
|---|---|
| Manufacturer | EZ Solar Products |
| Model | JB-F.100 |
| Series | Fortis 100 |
| Product Type | PV Junction Box |
| Roof Type | Composition / Asphalt Shingle Roofs |
| Maximum Voltage | 1,500 VDC / 450 VAC |
| Maximum Current | 80 Amps |
| Allowable Wire Size | 14 AWG – 6 AWG |
| Enclosure Rating | Type 3R |
| Roof Slope Range | 2.5:12 – 12:12 |
| Max Side Wall Fitting Size | 1 in |
| Max Floor Pass-Through Fitting Size | 1 in |
| Ambient Operating Conditions | -35°C to +75°C |
| Interior Volume | 100 in³ |
| Compliance | UL1741, CSA C22.2 No. 290 |
| System Marking | Intertek Symbol, File #5029623 |
EZ Solar Products manufactures solar electrical and mounting components designed to simplify installation and support reliable long-term field performance. Its Fortis series junction boxes are built for rooftop PV applications requiring durable enclosures and code-compliant conductor management.
The EZ Solar JB-F.100 Fortis 100 combines weather-resistant construction, high-voltage compatibility, and flexible conductor support to deliver dependable rooftop junction box performance for solar installations.
US Solar Supplier is an American-founded company based in Kentucky dedicated to offering top-quality solar components from trusted manufacturers. We provide competitive pricing, dependable inventory, and products backed by warranties you can trust.
Our inventory is updated daily with the latest solar technologies, and our experienced team is ready to assist with product selection, system design, and installation guidance.
Have questions before you order? Call 1-800-230-7004 to speak with our knowledgeable support team. We’re here to help with product details, compatibility questions, or purchasing support.