nVent A121212GSC - Screw-Cover Gasketed Type 3, 12.00x12.00x12.00, Galvanized, Steel
nVent

A121212GSC

UPC: 783510491390

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Installation Instructions

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Overview

The nVent Screw-Cover Gasketed Type 3 Enclosure (SKU: A121212GSC) is a rugged, galvanized steel junction box designed to protect electrical connections in demanding industrial and commercial environments. Engineered with a gasketed screw-cover for superior environmental sealing, this enclosure is ideal for applications where exposure to windblown dust, rain, or other contaminants could compromise system integrity. The 12.00x12.00x12.00 inch dimensions provide ample space for wiring, splicing, or terminal connections, while the galvanized steel construction ensures long-lasting durability against corrosion and physical stress. This Type 3-rated enclosure is a trusted solution for professionals in industries such as manufacturing, utilities, telecommunications, and transportation, where reliable electrical protection is critical. Common applications include serving as a junction box for power distribution, a pull box for cable management, or a terminal box for control wiring. The gasketed design meets NEMA Type 3 standards, providing protection against falling dirt, windblown dust, rain, sleet, and external ice formation—making it suitable for outdoor installations or unprotected indoor locations. Installation is straightforward, with pre-drilled knockouts for conduit entry and a secure screw-cover that resists tampering while allowing easy access for maintenance. The galvanized finish enhances corrosion resistance, extending the enclosure’s service life in harsh or coastal environments. As part of the nVent portfolio, this product benefits from the manufacturer’s reputation for high-quality electrical solutions, backed by decades of innovation in thermal management and protection systems. Professionals choose the nVent Screw-Cover Gasketed Enclosure for its balance of durability, compliance, and ease of use. Whether deployed in a factory floor, substation, or telecom shelter, this enclosure delivers consistent performance where other solutions might fail. For projects requiring a reliable, code-compliant housing for electrical connections, the A121212GSC stands out as a cost-effective, long-term investment in system reliability.
  • Captivated stainless steel cover screws thread into sealed wells
  • Oil-resistant gasket and adhesive
  • Seams continuously welded and ground smooth
  • No holes or knockouts
  • Grounding stud on inside back of box
  • 14 or 12 gauge G-90 grade galvanized steel bodies
  • 12 or 10 gauge G-90 grade galvanized steel covers

Specifications

Application
Power Distribution
Body Thickness
16 ga
Body Thickness
14 ga
Color
Unpainted
Cover Screw Quantity
8
Depth
13 IN
Depth
12 in
Depth, Maximum
12
Depth, Minimum
12
Door Thickness
14 ga
Door Thickness
12 ga
Finish
Galvanized
Height
12 IN
Height
44 IN
IP Rating
IP66
Material
Steel
Material
Mild Steel;Steel
Modification Services
Yes
Nema Rating
Type 3
NEMA Rating
3
Protection Rating
NEMA Type 3
Size
12.00x12.00x12.00
Size
12.00x12.00x12.00 in
Type
Pull and Junction Boxes
Type
Screw-Cover Pull Boxes Type 1/Type3
Type Number
Type 4
Weight
18.82 lb
Width
12 IN
Width
305 mm
Package Dimensions (L x W x H)
12 IN x 12 IN x 12.25 IN
Package Dimensions (L x W x H)
30.48 cm x 30.48 cm x 31.115 cm
Package Weight (Imperial)
18.820 L
Package Weight (Metric)
8.537 kg
Screw-Cover Gasketed Type 3, 12.00x12.00x8.00, Galvanized, Steel

A12128GSC

Screw-Cover Gasketed Type 3, 12.00x12.00x8.00, Galvanized, 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)

AB434

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 A121212GSC Controller

This guide provides step-by-step instructions for mounting and wiring the A121212GSC Controller securely.

Estimated time: 45m

Tools needed:

Screwdriver, Wire strippers, Multimeter

Supplies needed:

Mounting screws, Sealing washers, Mounting foot studs, Nuts

  1. Prepare mounting holes

    Locate the mounting foot stud locations using the provided dimensions. Use a center punch to mark the hole centers and drill four 0.5 inch (13 mm) diameter holes.

  2. Insert sealing washers

    Insert sealing washers into the drilled holes from the outside, ensuring the tapered cone is facing toward the hole.

  3. Attach mounting foot studs

    Insert the mounting foot studs through the sealing washers and turn the enclosure upright. Thread nuts onto the mounting foot studs and tighten to 200 in-lbs.

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.