nVent A18R126NK - Screw-Cover Drip-Shield Type 3R no Knockouts, 18x12x6, Gray, Steel
nVent

A18R126NK

UPC: 783510135041

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Installation Instructions

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Overview

The nVent Screw-Cover Drip-Shield Type 3R (SKU: A18R126NK) is a rugged, outdoor-rated junction box designed to safeguard electrical connections in harsh environmental conditions. Engineered by nVent, a global leader in electrical and thermal management solutions, this enclosure provides superior protection against rain, sleet, snow, and dripping water, making it ideal for unconditioned spaces where moisture resistance is critical. Constructed from durable steel with a gray powder-coated finish, the Type 3R rating ensures reliable performance in both indoor and outdoor applications where exposure to the elements is a concern. This drip-shield screw-cover enclosure features a 18x12x6-inch form factor, offering ample internal space for wiring, splices, and control components while maintaining a compact footprint for efficient installation. The absence of knockouts simplifies customization, allowing electricians and engineers to drill precise entry points tailored to specific conduit sizes or cable routing requirements. The screw-cover design ensures a secure seal when closed, preventing moisture ingress while providing easy access for maintenance or modifications. Typical applications for the nVent Type 3R Drip-Shield Screw-Cover include outdoor lighting systems, HVAC controls, irrigation controllers, and telecommunications enclosures. It is particularly well-suited for industries such as commercial construction, manufacturing, agriculture, and municipal infrastructure, where reliable protection of electrical components is essential for operational continuity. The Type 3R rating also makes it a preferred choice for NEMA 3R compliance, ensuring adherence to safety standards for outdoor electrical installations. Professionals select this enclosure for its combination of durability, ease of installation, and long-term reliability. The steel construction resists corrosion and physical damage, while the powder-coated finish enhances UV resistance and aesthetic consistency. Installation is straightforward, with mounting provisions designed for compatibility with standard electrical hardware. For optimal performance, ensure proper sealing of all conduit entries and maintain the enclosure’s integrity by avoiding modifications that compromise its ingress protection rating. nVent’s reputation for innovation and quality in electrical protection solutions makes the Type 3R Drip-Shield Screw-Cover a trusted choice among engineers, contractors, and facility managers. With a focus on safety, performance, and adaptability, this enclosure delivers the peace of mind required for critical outdoor electrical applications. Whether protecting control systems in a remote industrial site or securing wiring in a commercial parking lot, the nVent A18R126NK ensures that your electrical infrastructure remains safe, functional, and compliant with industry standards.
  • Drip shield top and seam-free sides, front, and back protect from rain, snow, or sleet
  • Slip-on removable cover fastened with plated steel screws along bottom edge
  • Handles on larger sizes (see table)
  • Embossed mounting holes on back of enclosure
  • Knockouts in bottom of 16 and 14 gauge enclosures
  • Provision for padlocking
  • No gasketing
  • Enclosures are finished with paint over plated surfaces
  • Top and bottom thickness gauge is the same as the body thickness gauge unless otherwise noted in table

Specifications

Application
Power Distribution
Body Style
A
Body Thickness
16 ga
Color
Gray
Color Code
ANSI 61
Depth
13 IN
Depth
6 in
Depth, Maximum
6
Depth, Minimum
6
Door Thickness
14 ga
Door Thickness
16 ga
Finish
Galvanized
Height
18 IN
Height
44 IN
IP Rating
IP32
Knockouts
False
Knockouts Included
No
Material
Steel
Material
Mild Steel;Steel
Modification Services
Yes
Mounting
Wall Mounting Brackets Available
Mounting
1.06;2.25 in;in
Mounting
27;57 mm;mm
NEMA Rating
NEMA 6
NEMA Rating
Type 3R
NEMA Rating
3r
Protection Rating
NEMA Type 3R
Series
Screw-Cover Drip-Shield
Size
18.00x12.00x6.00 in
Size
18x12x6
Type
Pull and Junction Boxes
Type
Screw-Cover Junction Boxes Type 3R
Type Number
Type 3R
Weight
16.2 lb
Width
12 IN
Width
305 mm
Package Dimensions (L x W x H)
18.7 IN x 13 IN x 7 IN
Package Dimensions (L x W x H)
47.498 cm x 33.02 cm x 17.78 cm
Package Weight (Imperial)
16.200 L
Package Weight (Metric)
7.348 kg
Screw-Cover Drip-Shield Type 3R With Knockouts, 18x12x6, Gray, Steel

A18R126

Screw-Cover Drip-Shield Type 3R With Knockouts, 18x12x6, Gray, Steel
The NEMA 4/4X/12 features a standard padlock-able feature with a single or (2) single point latches depending on the enclosure size. They are galvanealed steel coated. (Padlocks not included)

AB314

The NEMA 4/4X/12 features a standard padlock-able feature with a single or (2) single point latches depending on the enclosure size. They are galvanealed steel coated. (Padlocks not included)

How to Install the A18R126NK Controller

This guide provides step-by-step instructions for installing and configuring the A18R126NK Controller, ensuring proper wiring and initial setup.

Estimated time: 45m

Tools needed:

Screwdriver, Wire strippers, Multimeter

Supplies needed:

Mounting screws, Wire connectors, Padlock staple

  1. Mount the controller

    Secure the A18R126NK controller to the designated mounting surface using the provided mounting screws. Ensure it is level and firmly attached.

  2. Connect the wiring

    Use wire strippers to prepare the wires and connect them to the appropriate terminals on the controller. Ensure all connections are secure and insulated.

  3. Install the padlock staple

    Push the padlock staple through the slot in the bottom of the enclosure from the inside until it snaps in place to secure the enclosure.

  4. Verify connections

    Use a multimeter to check the voltage at the terminals to ensure proper wiring. Confirm that all connections are correct and functioning.

  5. Configure the controller

    Follow the manufacturer's instructions to program the controller settings according to your application requirements.

  6. Calibrate the system

    Perform any necessary calibration procedures as outlined in the user manual to ensure optimal performance of the A18R126NK controller.

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.