Tesla 4J 4-String Junction Box, Black

The Tesla 4J 4-String Junction Box in black is a Tesla Balance of Systems enclosure for combining up to four solar strings. It is sold as a single piece (PC). Pair it with Tesla connectors, jumpers and wire management accessories.

Key Features:

• 4-string capacity: Provides a 4-string junction point for solar array wiring.
• Black enclosure: Supplied in black to blend with roofline and mounting hardware.
• Tesla system part: A designated Tesla component within the Balance of Systems category.
• Single-piece unit: Sold and ordered as one piece.
• Centralized combining: Consolidates string terminations into one protected enclosure.

Specifications Table:

Fit and Compatibility:

Part of the Tesla solar Balance of Systems line; intended for use with Tesla string wiring, connectors and jumpers. Enclosure entry fittings and internal hardware are not specified in the sources.

Frequently Asked Questions (FAQ):

Q: What is included?
A: One Tesla 4J 4-String Junction Box in black, sold as a single piece.

Q: How many strings does it accept?
A: It is designated as a 4-string junction box, so up to four strings at a combiner point.

Q: What color is it?
A: Black.

Q: Does it come with fuses or lugs?
A: Internal contents are not stated in the sources; check Tesla documentation for included components.

Q: Where is it mounted?
A: Mounting location and hardware are not specified in the sources; follow Tesla installation instructions.

Expert Verdict Reviewed by the SuperArbor Pro Desk

A 4-string junction box keeps parallel string terminations organized and protected; map your string count before ordering so you are not short a combiner point. Keep the enclosure accessible for service while staying clear of roof traffic, and use Tesla-specified entry methods to preserve the intended protection. Verify conductor sizes and fusing requirements against your system design documentation.

All string combining and enclosure wiring should be done de-energized by a qualified installer per local electrical codes.

Add the Tesla 4J 4-String Junction Box to consolidate your solar strings neatly.