EZ Solar JB-3 Rail-Mounted Junction Box
Compact, Reliable, and Installer-Friendly – The EZ Solar JB-3 Junction Box for Rail-Based Solar Systems
The EZ Solar JB-3 Rail-Mounted Junction Box is designed to simplify wiring transitions for solar PV systems mounted on rail-based racking. Compact, durable, and quick to install, the JB-3 provides a secure, code-compliant solution for routing and protecting conductor splices above the roofline—eliminating the need for complex rooftop penetrations.
Rail-Mounted Convenience
The JB-3 easily attaches to most standard solar rail systems, allowing for streamlined installations without modifying the roof structure. This flexible mounting option improves accessibility and saves valuable time on site.
Durable, Weather-Resistant Housing
Constructed from high-impact, UV-resistant polymer, the JB-3 is built to withstand extreme environmental conditions, including heavy rain, snow, and long-term sun exposure. Its sealed design protects wiring connections from moisture and debris.
CEC Compliant & UL Listed
Certified to meet Canadian Electrical Code (CEC) standards, the JB-3 is UL 1741 and UL 514C listed, offering peace of mind and ensuring full compliance during inspections.
Quick and Clean Wire Management
Ideal for above-roof conductor splicing, the JB-3 includes pre-installed grommets and strain reliefs, keeping your wire runs organized, secure, and protected from strain or damage.
Key Features:
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Designed for rail-mounted solar racking systems
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No roof penetrations required – mount directly to rails
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CEC compliant and UL 1741 / UL 514C listed
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Compact, low-profile housing with watertight seal
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UV-resistant and weatherproof construction
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Ideal for managing above-roof conductor transitions
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Fast installation with included mounting hardware
