NVENT HOFFMAN STB404012 Terminal box, 400x400x120

Why Choose the nVent HOFFMAN STB404012 Mild Steel Terminal Box?

The nVent HOFFMAN STB404012 is a 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 STB404012 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 the sealed cover helps maintain dependable environmental protection around installed electrical equipment.

Measuring 400 mm high × 400 mm wide × 120 mm deep, the STB404012 provides a generous square mounting area while retaining a relatively shallow enclosure profile. This makes it well suited to larger terminal arrangements, cable junctions and associated wiring in industrial automation, machinery 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.
• Practical 400 × 400 × 120 mm dimensions for larger terminal arrangements.
• Square 400 × 400 mm format provides a useful internal installation area.
• Relatively shallow 120 mm depth supports space-efficient installation.
• Folded and seam-welded construction provides a strong enclosure body.
• RAL 7035 light grey powder-coated finish provides durable surface protection.
• Sealed screw-fixed cover helps maintain environmental protection.
• Suitable for terminal blocks, cable junctions and small electrical assemblies.

Key Features

• nVent HOFFMAN STB terminal box series.
• 400 mm height.
• 400 mm width.
• 120 mm depth.
• Mild steel construction.
• IP66 degree of protection.
• 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 support terminal and component mounting arrangements.
• Earthing provisions support protective bonding of the enclosure.

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 accidental contact. The IP66-rated nVent HOFFMAN STB404012 provides dependable environmental protection for electrical terminations used throughout 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. Its 400 × 400 mm front dimensions provide useful space for arranging terminals and wiring, while the 120 mm depth helps maintain a relatively compact installation profile.

Typical Applications

• Electrical terminal block installations.
• Industrial cable junctions and connections.
• Machine control and automation systems.
• Process control and instrumentation equipment.
• Manufacturing and production machinery.
• Electrical distribution and auxiliary circuits.
• Industrial installations requiring IP66 enclosure protection.