Underground cable junction box | with terminals | 4xM25 | 4-8mm / 8-12mm / 10-14mm | 163x152x60mm | waterproof | IP68

Underground junction box – IP68, with terminals, 4xM25, 24A, 450VAC, black

Underground junction box with terminals, designed for electrical cable connections outdoors, in damp zones, underground, for garden, terrace, facade lighting, automation, and industrial installations. The box features an IP68 protection rating, 4xM25 inlets, and is suitable for 0.5–4 mm² wires and cables with a diameter of 4–8 mm / 8–16 mm / 10–14 mm, depending on the inlet and sealing solution used.

• For residential use – outdoor lighting, garden, terrace, pool, fountain, or underground cable connections.
• For electricians – outdoor installation work, LED projects, facade lighting, cable connections in damp zones, and underground cable repair.
• For engineers/industry – automation systems, industrial equipment installation, industrial lighting lines, and energy infrastructure.
• In underground installations – when the cable connection point must be protected from soil moisture and environmental impact.
• For outdoor objects – when a sealed box with multiple cable inlets and internal terminals is required.

For example, the box is used to connect garden lighting cables underground. Power and output cables are inserted into the box through the M25 inlets, conductors are connected to the terminals, and all inlets are tightly secured according to the cable diameter. This protects the connection point from moisture, dust, and ground impact.

Another practical application is facade LED lighting, terrace electrical points, fountain pump connection, outdoor automation systems, or industrial lighting line connections. In all cases, it is essential to verify that the box's current, voltage, wire cross-section, and cable diameter match the specific installation.

The underground junction box is an electrical installation component; before installation, it is essential to evaluate the cable type, wire cross-section, load, circuit protection, inlet sealing, and installation environment.

• Installation must be performed by a qualified electrician in compliance with applicable electrical safety regulations.
• Do not exceed 24 A rated current – load must be matched with the box and terminal ratings.
• Use only for 0.5–4 mm² wires – choose a different box or terminal solution for larger cross-sections.
• All inlets must be tightly secured, and unused inlets must be properly sealed.
• Cable diameter must match the sealing range – otherwise, IP68 protection may not be ensured.
• For underground installation, it is recommended to provide additional mechanical protection against pressure, stones, soil movement, or excavation work.

Quick selection guide

Underground junction box IP68 with terminals – a suitable choice when reliable electrical cable connection is needed outdoors, underground, in damp zones, or technical installations. It features 4xM25 inlets, is suitable for 0.5–4 mm² wires, and can be used for loads up to 24 A, provided the system is properly designed.

Hermetic solution for cable connections outdoors and underground

The IP68 underground junction box with terminals allows for reliable electrical cable connections where standard junction boxes are insufficient – in damp, dusty, outdoor, or underground installations.

Due to the 4xM25 inlets, support for 0.5–4 mm² wires, 24 A rated current, brass contacts, PC housing, wide temperature range, and IP68 sealing, this box is a practical choice for outdoor lighting, garden installations, automation, LED facade projects, and industrial cable connection points.