nVent SSTB404012-316 - Terminal Box, SSTB, 400x400x120mm, Brushed, Stainless 316
nVent

SSTB404012-316

UPC: 783510529338

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Installation Instructions

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Overview

The nVent SSTB404012-316 stainless steel terminal box is a high-performance, corrosion-resistant enclosure designed to protect electrical connections in demanding industrial environments. Part of the SSTB series, this terminal box features a brushed stainless steel finish and meets IP66 protection standards, ensuring complete resistance to dust ingress and water jets from any direction. With dimensions of 400x400x120mm, it provides ample space for terminal blocks, wiring, and components while maintaining a compact footprint suitable for both indoor and outdoor installations. Engineered from AISI 316 stainless steel, the SSTB404012-316 offers exceptional resistance to corrosion, making it ideal for harsh chemical environments, marine applications, food processing facilities, and wastewater treatment plants. The 1mm thick body and 1.5mm thick cover are folded and seam-welded for structural integrity, while four M6x13 studs on the bottom ensure secure mounting and grounding. The brushed finish not only enhances corrosion resistance but also provides a professional appearance suitable for visible installations. This terminal box is designed for versatility, supporting multiple mounting options including wall mounting, pole fixation, and DIN rail compatibility through optional accessories. The IP66 rating (equivalent to NEMA Type 4X) guarantees protection against prolonged exposure to water and dust, eliminating the risk of component failure and unplanned downtime. Typical applications include control panels, junction boxes, sensor enclosures, and distribution points in industries such as oil & gas, pharmaceuticals, chemical processing, and renewable energy. nVent, a trusted leader in electrical and thermal management solutions, delivers the SSTB series with the reliability and durability expected from a global manufacturer. The SSTB404012-316 is available off-the-shelf in multiple sizes, allowing for quick deployment in critical infrastructure projects. Its robust construction, compliance with international standards, and compatibility with nVent’s extensive range of accessories make it a preferred choice for engineers and installers seeking long-term protection for sensitive electrical components. Professionals select the SSTB404012-316 for its combination of material quality, protection rating, and installation flexibility. Whether used in a coastal facility exposed to salt spray, a chemical plant with aggressive vapors, or an outdoor substation, this terminal box delivers consistent performance. The inclusion of earthing facilities and optional mounting hardware further simplifies installation, reducing labor costs and project timelines. For applications where reliability cannot be compromised, the nVent SSTB series stands as a benchmark in stainless steel terminal enclosures.
  • Material: AISI 304L pre-grained stainless steel / AISI 316L (on request). Body: 1 mm. Cover: 1.5 mm.
  • Body: Folded and seam welded. Four M6x13 studs for bottom profile / mounting plate fixation. For ease of installation, each back corner of the enclosure is laser-marked to precisely indicate where to drill holes and affix AWS wall mounting brackets.
  • Gasket: Sealing is ensured by an injected polyurethane gasket. For AISI 316L, sealing is ensured by an injected silicone gasket.
  • Earthing: M8x18 mm earthing studs in body and cover, M8 nuts, earthing washers and earthing labels.
  • Finish: 400 pre-grained stainless steel.
  • Delivery: Body, cover, cover screws, fixing screws, cover plugs and earthing facilities.
  • Delivery: Body, cover, cover screws, fixing screws, cover plugs and earthing facilities.
  • Available off-the-shelf in various sizes for quick deployment

Specifications

Application
Corrosive Environments; Factory Automation and Process Control; Hazardous Environments
Body Thickness
1 mm
Body Thickness
18 ga
Cable Entry
No
Color
Unpainted
Construction
Body: 18 gauge Door: 16 gauge
Cubic Capacity
1172 Cu-in
Depth
4.72 in
Depth
120 mm
Door Thickness
1.5 mm
Door Thickness
16 ga
Finish
Brushed
Height
400 mm
Height
15.75 in
Insulation
No
Knockouts
No
Material
Stainless Steel 316
Mounting
Wall Mounted
Number of Outlet
1
Protection Rating
NEMA Type 12
Size
15.75 x 15.75 x 4.72 inch
Type
Stainless Steel Terminal and Junction Boxes
Weight
5.4 kg
Weight
11.91 lb
Width
15.75 in
Width
400 mm
Package Dimensions (L x W x H)
16.12 IN x 16.12 IN x 16.37 IN
Package Dimensions (L x W x H)
40.9448 cm x 40.9448 cm x 41.5798 cm
Package Weight (Imperial)
13.800 L
Package Weight (Metric)
6.260 kg
Terminal Box, SSTB, 300x400x120mm, Brushed, Stainless 316

SSTB304012-316

Terminal Box, SSTB, 300x400x120mm, Brushed, Stainless 316

How to Prepare for SSTB404012-316 Installation

This guide outlines critical safety precautions and preparatory steps required before installing the SSTB404012-316, focusing on surface preparation and enclosure integrity.

Estimated time: 15m

Tools needed:

Measuring tape, Cutting tools, Fasteners

Supplies needed:

Galvanized or uncoated steel plate, Fasteners, Environmental-rated sealing devices

  1. Prepare mounting surface for combustible materials

    If mounting SSTB404012-316 on or over a combustible surface, install a floor plate of at least 1.43 mm galvanized or 1.6 mm uncoated steel. Ensure this plate extends at least 150 mm beyond the equipment on all sides to prevent fire hazards.

  2. Maintain enclosure environmental integrity

    To preserve the environmental integrity of the SSTB404012-316 enclosure, use only devices with the same environmental ratings when closing any openings in customized enclosures.

  3. Consult full product documentation

    Before commencing the physical installation of SSTB404012-316, refer to the complete product documentation for detailed installation procedures, wiring diagrams, and specific safety instructions not covered in these preliminary warnings.

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.