Authorized nVent Distributor
nVent A12128GSC - Screw-Cover Gasketed Type 3, 12.00x12.00x8.00, Galvanized, Steel

nVent A12128GSC Screw-Cover Gasketed Type 3, 12.00x12.00x8.00, Galvanized, Steel

UPC: 783510490997


Documents & Media
Installation Instructions

Contact for Pricing

Call +1 (262) 252-1600 (toll-free 877-268-3700) or email [email protected] for pricing and availability.

Overview

The nVent HOFFMAN A12128GSC is a galvanized steel screw-cover enclosure designed for junction and terminal box applications in demanding industrial and outdoor environments. This enclosure measures 12.00 x 12.00 x 8.00 inches (305 x 305 x 203 mm) with a 14-gauge G-90 galvanized steel body and 10-gauge galvanized steel cover. The screw-cover design features an integrated gasket to provide a tight seal against windblown dust, rain, and moisture ingress. It meets NEMA Type 4 and 12, as well as IP66 environmental ratings, ensuring reliable protection in harsh conditions. The enclosure includes 8 cover screws and embossed mounting holes on the back for simplified installation. With ample interior space for wiring, terminal blocks, or junction connections, the A12128GSC is ideal for industrial facilities, commercial buildings, utility projects, and harsh environments such as oil/gas, mining, and chemical processing. This enclosure delivers durable performance where electrical safety and equipment longevity are critical.
  • 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
14 ga
Body Thickness
16 ga
Color
Unpainted
Cover Screw Quantity
8
Depth
8 in
Depth
13 IN
Depth, Maximum
8
Depth, Minimum
8
Door Thickness
14 ga
Door Thickness
12 ga
Finish
Galvanized
Height
12 IN
Height
44 IN
IP Rating
IP66
Material
Mild Steel;Steel
Material
Steel | Galvanized
Material
Galvanized Steel
Material
Steel
Modification Services
Yes
Mounting Type
Back embossed mounting holes
NEMA Rating
3
Nema Rating
Type 3
Protection Rating
NEMA Type 3
Size
12.00x12.00x8.00 in
Size
12.00x12.00x8.00
Size
12.00 x 12.00 x 8.00 inches (305 x 305 x 203 mm)
Type
Pull and Junction Boxes
Type
Screw-Cover Pull Boxes Type 1/Type3
Type Number
Type 4
Weight
15.02 lb
Width
305
Width
305 mm
Width
12 IN
Package Dimensions (L x W x H)
12 IN x 12 IN x 8.25 IN
Package Dimensions (L x W x H)
30.48 cm x 30.48 cm x 20.955 cm
Package Weight (Imperial)
15.020 L
Package Weight (Metric)
6.813 kg
Screw-Cover Gasketed Type 3, 12.00x12.00x6.00, Galvanized, Steel

A12126GSC

Screw-Cover Gasketed Type 3, 12.00x12.00x6.00, 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)
Screw-Cover Enclosure Type 1 no Knockouts, 24x12x8, Galvanized, Steel

ASG24X12X8NK

Screw-Cover Enclosure Type 1 no Knockouts, 24x12x8, Galvanized, Steel
Screw-Cover Enclosure Type 1 no Knockouts, 18x12x8, Galvanized, Steel

ASG18X12X8NK

Screw-Cover Enclosure Type 1 no Knockouts, 18x12x8, Galvanized, Steel
Screw-Cover Enclosure Type 1 no Knockouts, 24x20x8, Gray, Steel

ASE24X20X8NK

Screw-Cover Enclosure Type 1 no Knockouts, 24x20x8, Gray, Steel
Screw-Cover Enclosure Type 1 no Knockouts, 10x6x4, Gray, Steel

ASE10X6X4NK

Screw-Cover Enclosure Type 1 no Knockouts, 10x6x4, Gray, Steel
Screw-Cover Enclosure Type 1 no Knockouts, 24x12x8, Gray, Steel

ASE24X12X8NK

Screw-Cover Enclosure Type 1 no Knockouts, 24x12x8, Gray, Steel
Screw-Cover Enclosure Type 1 no Knockouts, 24x18x8, Galvanized, Steel

ASG24X18X8NK

Screw-Cover Enclosure Type 1 no Knockouts, 24x18x8, Galvanized, Steel

How to Install the A12128GSC Controller

This guide provides step-by-step instructions for mounting and wiring the A12128GSC 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.