nVent STB305012 - Terminal Box, STB, 300x500x120mm, Light Gray, Mild Steel
nVent

STB305012

UPC: 783510529611


Documents & Media
Installation Instructions

Contact for Pricing

Overview

The nVent STB305012 is a mild steel terminal box designed for robust electrical protection in industrial settings. Constructed from 1.2mm mild steel with a folded and seam-welded body, this enclosure offers superior durability. It measures 300mm in height, 500mm in width, and 120mm in depth, with a weight of 5.40 kg. The light gray (RAL 7035) structured powder coating provides a durable finish. Achieving IP66, TYPE 4, 12, and 13 protection ratings, along with IK08 impact resistance, it effectively shields internal components from dust, water, and physical impact. A one-piece injected polyurethane gasket ensures a reliable seal. Integrated M8x18mm earthing studs are provided in both the body and cover for secure grounding. For mounting, the box features four 8.5mm diameter holes for wall fixing and four M6x13 studs for bottom profile or mounting plate attachment. Delivered as a complete assembly, the STB305012 simplifies installation for industrial control panels, automation systems, and electrical distribution networks in manufacturing, utilities, and commercial facilities.
  • Material: 1.2 mm mild steel.
  • Body: Folded and seam welded. Four 8.5 mm diameter holes for wall fixing. Four M6 × 13 studs for bottom profiles / mounting plate fixation.
  • Gasket: Sealing is ensured by an injected one piece polyurethane gasket.
  • Earthing: M8x18 mm earthing studs in body and cover, M8 nuts, earthing washers and earthing labels.
  • Protection: IP 66, TYPE 4, 12, IK 08.
  • Finish: RAL 7035, structured powder coating.
  • Delivery: Body, cover, cover screws, fixing screws, cover plugs, and earthing facilities.
  • Suitable for indoor industrial, commercial, and utility applications

Specifications

Application
Controls and Drives;Factory Automation and Process Control
Application
Factory Automation and Process Control; Controls and Drives
Body Thickness
1.2 mm
Body Thickness
16 ga
Body Thickness
18 ga
Cable Entry
No
Color
Light Gray;RAL 7035 Light Gray
Color
Light Gray
Color Code
RAL 7035
Construction
Body: 18 gauge Door: 18 gauge
Cubic Capacity
1 in3
Cubic Capacity
16387.1 mm3
Depth
13 IN
Depth
4.72
Depth
120
Door Thickness
1.2 mm
Door Thickness
14 ga
Door Thickness
18 ga
Finish
Powder Coated
Height
44 IN
Height
11.81
Height
300
Insulation
No
IP Rating
IP66
Material
Mild Steel
Mounting
Wall Mounted
Mounting Type
Wall fixing (4x8.5mm holes) and bottom profile mounting (4xM6x13 studs)
Mounting Type
Wall-mounted, Panel-mounted, DIN rail
NEMA Rating
4
Nema Rating
Type 4, 12, 13
NEMA Rating
NEMA Type 4 NEMA Type 12 NEMA Type 13
Number Of Outlet
1
Protection Rating
NEMA Type 4
Series
STB
Size
11.81 x 19.69 x 4.72 inch
Size
300x500x120 mm
Type
Mild Steel Terminal and Junction Boxes
Type
Mild Steel Industrial Terminal and Junction Boxes
Weight
12.49 lb
Weight
32 lbs./100ft
Width
23 IN
Width
19.69
Width
500
Package Dimensions (L x W x H)
20.06 IN x 12.19 IN x 5.35 IN
Package Dimensions (L x W x H)
50.9524 cm x 30.9626 cm x 13.589 cm
Package Weight (Imperial)
12.490 L
Package Weight (Metric)
5.666 kg
Terminal Box, STB, 300x600x120mm, Light Gray, Mild Steel

STB306012

Terminal Box, STB, 300x600x120mm, Light Gray, Mild Steel

How to Install the STB305012 Controller

This guide provides step-by-step instructions for installing and configuring the STB305012 Controller, ensuring proper wiring and calibration.

Estimated time: 1h

Tools needed:

Screwdriver, Wire strippers, Multimeter

Supplies needed:

Mounting screws, Wire connectors, Floor plate (if applicable)

  1. Prepare the installation area

    Ensure the installation area is clear and safe. If mounting on a combustible surface, install a floor plate of at least 1.43 mm galvanized or 1.6 mm uncoated steel, extending at least 150 mm beyond the equipment on all sides.

  2. Mount the controller

    Secure the STB305012 controller to the DIN rail using the integrated clips. Ensure the controller is level and firmly attached.

  3. Connect the wiring

    Use wire connectors to connect the power supply and input/output terminals as per the wiring diagram provided in the manual. Verify all connections are secure and correct using a multimeter.

  4. Configure the controller

    Power on the controller and access the configuration menu. Set the required parameters according to your application needs, ensuring to save the settings.

  5. Calibrate the system

    Follow the calibration procedure outlined in the manual to ensure the controller operates within specified parameters. Test the system to verify functionality.

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.