nVent HOFFMAN STB203012 is an IP66 and IK08 mild steel terminal box measuring 200 x 300 x 120 mm with a RAL 7035 powder-coated finish for protecting electrical terminals, junctions and connections in industrial applications.
SKU:STB203012MPN:STB203012
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Why Choose the nVent HOFFMAN STB203012 Mild Steel Terminal Box?
The nVent HOFFMAN STB203012 is a compact and robust mild steel terminal box designed to protect electrical terminals, cable connections and small control components in demanding industrial environments. Part of the nVent HOFFMAN STB terminal box series, it provides a practical enclosure solution for terminal blocks, junctions and auxiliary electrical equipment.
Manufactured from mild steel, the STB203012 combines durable industrial construction with a RAL 7035 light grey powder-coated finish. Its IP66 protection rating provides complete protection against dust and protection against powerful water jets, while IK08 impact resistance adds protection against mechanical impacts.
Measuring 200 mm high × 300 mm wide × 120 mm deep, the STB203012 provides greater installation depth than the 80 mm-deep variants while maintaining a compact footprint. Its seam-welded body, screw-fixed cover, sealing gasket and internal fixing provisions make it well suited to industrial automation, machine building and electrical distribution applications.
Key Advantages
Robust mild steel terminal box for industrial electrical applications.
IP66 protection rating provides excellent resistance to dust and water ingress.
Internal fixing studs support compatible mounting plates or DIN rail arrangements.
Suitable for terminal blocks, cable junctions and small electrical assemblies.
Key Features
nVent HOFFMAN STB terminal box series.
200 mm height.
300 mm width.
120 mm depth.
Mild steel construction.
IP66 degree of protection.
IK08 mechanical impact resistance.
RAL 7035 light grey finish.
Durable powder-coated surface.
Folded and seam-welded enclosure body.
Solid screw-fixed cover.
Sealing gasket helps protect against water and dust ingress.
Internal fixing provisions for terminal mounting arrangements.
Earthing provisions for protective bonding.
Reliable Mild Steel Protection for Electrical Terminations
Industrial terminal boxes provide a protected location for terminal blocks, cable junctions and electrical connections while helping isolate installed equipment from dust, moisture and mechanical contact. The IP66-rated nVent HOFFMAN STB203012 provides dependable environmental protection for electrical terminations in machinery, automation systems and industrial installations.
The mild steel construction provides a durable housing for electrical equipment, while the RAL 7035 powder-coated finish adds surface protection and a professional industrial appearance. With a 120 mm depth, the STB203012 provides useful additional space for terminals, wiring and associated components while retaining compact 200 × 300 mm front dimensions.
What are the dimensions of the nVent HOFFMAN STB203012?
The STB203012 measures 200 mm high × 300 mm wide × 120 mm deep, providing a compact footprint with useful internal depth for terminals and wiring.
What IP rating does the nVent HOFFMAN STB203012 have?
The terminal box has an IP66 protection rating, providing complete protection against dust and protection against powerful water jets when correctly installed.
What material is the STB203012 manufactured from?
The STB203012 is manufactured from mild steel and features a durable RAL 7035 light grey powder-coated finish.
Does the nVent HOFFMAN STB203012 include a mounting plate?
No. A mounting plate is not included as standard and can be ordered separately when required for the intended terminal or component arrangement.
What is the nVent HOFFMAN STB203012 used for?
The STB203012 is designed to house and protect terminal blocks, electrical junctions, cable connections and small electrical components in industrial machinery, automation and electrical distribution applications.
Trusted nVent HOFFMAN Enclosure Protection
nVent HOFFMAN STB mild steel terminal boxes provide dependable protection for electrical terminals and connections, with the STB203012 combining IP66 ingress protection, IK08 impact resistance, RAL 7035 powder-coated steel construction and practical 200 × 300 × 120 mm dimensions for industrial applications.
Country of Manufacture
Bulgaria
Manufacturer
nVent HOFFMAN
Series
STB
Model
STB203012
Product type
Mild steel terminal box
Height
200 mm
Width
300 mm
Depth
120 mm
Material
Mild steel
Finish
Powder coated
Colour
Light grey
RAL colour
RAL 7035
Degree of protection
IP66
Impact resistance
IK08
Body construction
Folded and seam welded
Cover type
Solid screw-fixed cover
Mounting plate
Not included
No documents available for this product.
Delivery
We offer fast UK delivery on all stocked items. Orders placed before 3pm Monday to Friday are eligible for next-day delivery.
Standard delivery: 2–3 working days
Next-day delivery: available on in-stock items when ordered before 3pm
Express options available — contact us for details
Returns
If you need to return an item, please contact our sales team within 30 days of receipt. Items must be returned unused in their original packaging.
Our service agreements are built to support long term procurement relationships. By working closely with engineering teams and procurement departments, we help streamline purchasing processes while ensuring consistent access to critical components and sourcing support when it matters most.
Priority sourcing and supply support
Flexible payment terms for qualifying organisations
Support for engineering, maintenance, and operations
500 +
Stock lines ready to ship
1,000 +
Same day dispatches
3500 +
Customers supported
28
Trusted Manfacturers
● frequently asked questions
Common questions about our products and support
At Led Controls Ltd we help engineers source the right automation and control gear with confidence. below are quick answers to what we are asked most often.
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We supply all leading manfacturers in our industry. we offer next day delivery on most poplour products.
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...