nVent RF-4 - RF Solar Combiner Box, ungrounded, 11.32x9.32x5.39, 4 contacts, Fiberglass
nVent

RF-4

UPC: 635394586238

Contact for Pricing

Overview

The nVent RF-4 Solar Combiner Box is a premium, ungrounded DC combiner designed for photovoltaic (PV) systems, offering reliable string aggregation with up to 4 inputs. Engineered by nVent, a leader in electrical and thermal management solutions, this combiner box combines power from multiple solar panel strings into a single output, optimizing system efficiency while ensuring safety and durability in harsh environments. Built for professional solar installations, the RF-4 features a fiberglass-reinforced polyester (FRP) enclosure that delivers exceptional resistance to UV radiation, chemicals, and extreme weather conditions. The enclosure meets NEMA 4X, IP68, and UL/cUL standards, providing superior protection against dust, moisture, and corrosion. Its robust construction and full-length piano-hinged door with a non-metallic latch ensure long-term reliability and easy access for maintenance. Key features of the RF-4 include oversized busbars that minimize voltage drop and improve system efficiency, as well as pre-configured internal layouts that streamline installation and reduce labor costs. The combiner box is designed for ungrounded systems, making it ideal for applications where grounding is not required or where system design calls for isolated DC circuits. Each unit is hand-assembled in the U.S.A. using premium, name-brand components, ensuring durability and serviceability. Typical applications for the nVent RF-4 Solar Combiner Box include residential, commercial, and utility-scale solar PV systems. It is particularly well-suited for installations where space is limited or where environmental conditions demand high ingress protection. The RF-4 supports seamless integration with inverters, charge controllers, and battery storage systems, providing a reliable transition point between the solar array and the rest of the electrical system. Professionals choose nVent for its commitment to quality, innovation, and customer support. With decades of experience in electrical infrastructure, nVent delivers products that meet the highest industry standards, ensuring safety, performance, and longevity. Whether you are expanding an existing solar array or installing a new system, the RF-4 Solar Combiner Box provides a trusted solution that simplifies wiring, enhances system reliability, and reduces total cost of ownership. For contractors, distributors, and system integrators, the RF-4 offers a cost-effective, plug-and-play solution that accelerates project timelines and minimizes on-site labor. Its compatibility with any brand of solar panel and adherence to IEC and UL standards make it a versatile choice for diverse PV applications. Trust nVent to deliver the performance and protection your solar installation demands.
  • 4-input ungrounded DC combiner for PV systems
  • Fiberglass-reinforced polyester (FRP) enclosure with NEMA 4X, IP68, UL/cUL certification
  • Oversized busbars reduce voltage drop and improve system efficiency
  • Hand-assembled in the U.S.A. using premium components for durability and serviceability
  • Full-length piano-hinged door with non-metallic latch for easy access and maintenance
  • Connector Type: Screw Clamp
  • Maximum Current Per Terminal: 24A
  • Maximum Fuse Size: 30A

Specifications

Application
Power Connections; Corrosive Environments; Controls and Drives; Power Distribution
Color
Light Gray
Color Code
RAL 7035
Depth
137 mm
Depth
5.39 in
Finish
Smooth Matte
Height
288 mm
Height
11.32
Material
Fiberglass
Max Current
96 A
Max Heating Cable Output Wire Size
#6 - 250 kcmil
Max Heating Cable Output Wire Size
#6 - 250MCM AWG
Max Power Supply Input Wire Size
#6 - #14 AWG
Max Power Supply Input Wire Size
#6 - #14
Nominal Voltage
1,000 V
Nominal Voltage Type
AC/DC
Number of Contacts
4
Protection Rating
NEMA Type 3
Thickness
3.3 mm
Thickness
0.13 in
Type
Fiberglass and Thermoplastic Industrial Terminal and Junction Boxes
Type
Fiberglass and Thermoplastic Terminal and Junction Boxes
Weight
5.25 lb
Width
9.32
Width
237 mm
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.
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
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
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
External operation handle 0-1 type S01 Red Nema 4,4x

140E2911

External operation handle 0-1 type S01 Red Nema 4,4x
Escutcheon black type B for Sircover 125-630A

44095015

Escutcheon black type B for Sircover 125-630A
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
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

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.