nVent RJ-1 - RJ Solar Rooftop Junction Box, 8x8x3.5, Black, Polycarbonate
nVent

RJ-1

UPC: 635394589291


Documents & Media
Installation Instructions

Contact for Pricing

Overview

The nVent RJ-1 Solar Rooftop Junction Box (SKU: RJ-1) is a NEMA 4X-rated enclosure designed for solar photovoltaic (PV) installations. Manufactured by nVent, this 8x8x3.5-inch polycarbonate box offers robust protection against moisture, UV exposure, and mechanical stress in outdoor environments. Its construction ensures watertight integrity and long-term durability, making it suitable for rooftop solar applications where weatherproofing and electrical safety are critical. The RJ-1 simplifies solar installation by minimizing roof penetration and accelerating project timelines with its snap-on cover and base design featuring a TPE gasket for tool-free, secure installation. It is engineered for attic runs and wire connections in residential, commercial, and utility-scale solar PV systems. The polycarbonate housing provides exceptional impact resistance and thermal stability across a wide temperature range. The NEMA 4X rating guarantees protection against water ingress, dust, and corrosion. The RJ-1 is compatible with standard cable glands and terminal strips for flexible wiring configurations. Professionals trust nVent for reliable electrical enclosures, and the RJ-1 is a dependable solution to enhance system longevity and operational efficiency in modern solar installations.
  • NEMA 4X-rated enclosure for superior protection in outdoor solar PV installations
  • Durable 8x8x3.5-inch black polycarbonate construction resists UV, moisture, and impact
  • Snap-on cover and base with TPE gasket for tool-free, secure, and watertight installation
  • Designed for rooftop solar applications, simplifying wire connections and minimizing roof penetration
  • Ideal for residential, commercial, and utility-scale solar systems requiring reliable weatherproofing
  • Minimal design, small footprint
  • All roof penetrations cover by NEMA 4X enclosure
  • Dark Graphite color blends in with any rooftop
  • Cost effective
  • UV stabilized

Specifications

Application
Corrosive Environments; Controls and Drives; Power Connections; Power Distribution
Color
Black
Color
Graphite Black
Color Code
RAL 9011
Depth
3.5 in
Depth
89 mm
Finish
Smooth Matte
Height
203 mm
Height
8 IN
Material
Polycarbonate
Nema Rating
Type 4X
Protection Rating
NEMA Type 3
Series
RJ
Size
8x8x3.5
Thickness
0.13 in
Thickness
3.3 mm
Type
Fiberglass and Thermoplastic Industrial Terminal and Junction Boxes
Type
Fiberglass and Thermoplastic Terminal and Junction Boxes
Weight
2.73 lb
Width
203 mm
Width
8 in
Panel 6.9 x 4.9 - Fits Encl. 8 x 6 - Alum

14A0705

Panel 6.9 x 4.9 - Fits Encl. 8 x 6 - Alum
Sealable and transparent protective covers BX4 and non-removable BX4-CA to protect the devices against accidental contact.

BX4

Sealable and transparent protective covers BX4 and non-removable BX4-CA to protect the devices against accidental contact.
Escutcheon black type B for Sircover 125-630A

44095015

Escutcheon black type B for Sircover 125-630A
Escutcheon black type B for Sircover 125-630A IP65

44095016

Escutcheon black type B for Sircover 125-630A IP65
1/2 Inch, 90 Degree, Two-Piece Liquidtight Non-Metallic Fitting, UL E32447, Temperatures up to 107 Degrees C, Nitril Rubber O-Ring, PVC, Grey

LT20D-NEW

1/2 Inch, 90 Degree, Two-Piece Liquidtight Non-Metallic Fitting, UL E32447, Temperatures up to 107 Degrees C, Nitril Rubber O-Ring, PVC, Grey
1/2 Inch, Straight, One-Piece Liquidtight Non-Metallic Fitting, CSA, UL E32447, Temperatures up to 60 Degrees C, PVC, Grey

LN43DA

1/2 Inch, Straight, One-Piece Liquidtight Non-Metallic Fitting, CSA, UL E32447, Temperatures up to 60 Degrees C, PVC, Grey
Cord Grip with NPT Threads, Locknut Included, NPT Thread Size 3/8 Inch, Cable Range 0.181 Inch/4.6mm to 0.312 Inch/7.9mm, Hole Clearance 0.670 Inch/17.0mm, Thread Length 0.53 Inch/13.5mm, IP68 Rating, Nylon, Black

LH38

Cord Grip with NPT Threads, Locknut Included, NPT Thread Size 3/8 Inch, Cable Range 0.181 Inch/4.6mm to 0.312 Inch/7.9mm, Hole Clearance 0.670 Inch/17.0mm, Thread Length 0.53 Inch/13.5mm, IP68 Rating, Nylon, Black
EP-RJG-M20-BL-A

1SNG618003R0000

EP-RJG-M20-BL-A
5,90" x 5,90" filter fan - 24Vdc - 20.6 cfm - RAL 9005 - Type 3R - IP55

FF12D24NN53

5,90" x 5,90" filter fan - 24Vdc - 20.6 cfm - RAL 9005 - Type 3R - IP55
12,80" x 12,80" filter fan - 115Vac - 285.3 cfm - RAL 7035 - Type 12

FF20A115UE1

12,80" x 12,80" filter fan - 115Vac - 285.3 cfm - RAL 7035 - Type 12

How to Install the RJ-1 Rooftop Junction Box

This guide provides step-by-step instructions for installing the RJ-1 rooftop junction box, ensuring proper mounting, wiring, and sealing.

Estimated time: 45m

Tools needed:

Screwdriver, Drill, Wire strippers, Multimeter

Supplies needed:

Mounting screws, Roofing sealant, Terminal connectors

  1. Prepare the installation site

    Ensure the roof is dry and free of any obstructions. Remove any roofing nails beneath the first three courses of shingles that may obstruct the flashing.

  2. Drill pilot holes

    Using a 1/4" drill bit, drill through the RJ-1 junction box and the roof simultaneously to create pilot holes for mounting.

  3. Apply roofing sealant

    Remove the RJ-1 box, clean it, and apply a bead of roofing sealant to the underside of the flashing in an 'Upside-down U' shape for water protection.

  4. Mount the junction box

    Reinstall the RJ-1 junction box over the pilot holes and secure it using the two supplied decking screws. Torque the screws to 15-20 lb-in as specified.

  5. Install the cover

    Place the cover onto the top of the enclosure and tighten the four cover screws to the torque value of 11 lb-in as indicated.

  6. Populate the junction box

    Install the necessary wire connectors and terminal blocks inside the RJ-1 unit, ensuring all components are rated for their intended purpose.

  7. Verify connections

    Use a multimeter to check the integrity of all electrical connections before energizing the system.

Frequently Asked Questions about nVent

What industries and applications are nVent products used for?

nVent products are engineered for critical infrastructure and industrial applications across multiple demanding sectors. Key markets include Construction, Data Centers, Defense, Healthcare, Mining, Oil & Gas Refineries, Power Plants, Rail/Transit, Renewable Energy, Security, Ship Building, Steel Mills, Telecom, and Utilities. Their solutions are designed to withstand extreme environmental conditions, with temperature ranges from -55°C to 105°C and specialized features like UV resistance, oil resistance, and flame resistance.

What environmental ratings do nVent products have?

nVent enclosures feature comprehensive environmental ratings, including UL 508A, CSA, and NEMA Type 1, 2, 3, 4, 4X, 12, and 13 certifications. They are rated IEC 60529 IP66, providing robust protection against dust, water, and corrosion in both indoor and outdoor environments. These products operate effectively in temperatures ranging from -40°F to 266°F, with enhanced UV inhibitors for outdoor weathering and oil-resistant gaskets for superior sealing.

What accessories are available for nVent products?

nVent offers a comprehensive range of accessories across multiple product lines, including EMC accessories like bonding cable clamps and strain reliefs, inline accessories such as lock inserts and mounting brackets, CONCEPT accessories including panel conversion kits and rack-mount angles, and seismic accessories for specialized mounting requirements. Key accessory categories include grounding kits, DIN rail mounting solutions, panel supports, handles, and various mounting hardware compatible with different enclosure types.

What certifications and standards do nVent products comply with?

nVent products meet critical international certifications including UL (United States), CSA (Canada), CE (European Community), and EAC (Russia). Our products are designed to comply with rigorous industrial standards such as NEMA enclosure ratings, IEC 60529 IP ratings, and international safety standards across multiple industrial markets including oil & gas, power, manufacturing, and infrastructure.

What is nVent's warranty policy?

nVent offers a standard 18-month warranty from invoicing date for most automation products, covering defects in workmanship and materials. The warranty requires proper transportation, handling, storage, and installation within specified environmental conditions. Warranty coverage includes repair or replacement at nVent's discretion, with certain conditions such as authorized service repairs and operation within designed capacity limits.

What technical support does nVent offer?

nVent offers comprehensive technical support through multiple global contact centers across North America, South America, Europe, Middle East, India, and Asia. Customers can reach technical experts by phone at regional numbers, with the North American headquarters in Minneapolis, MN providing primary support at +1.763.421.2240. Additionally, nVent provides online support resources through their website, including CAD drawing downloads and an 'Ask The Expert' feature to assist with product technical inquiries.