Metal Clad Switches & Sockets

Metal clad switches and sockets are electrical accessories with a robust steel faceplate rather than the plastic front found on standard domestic fittings. They are built for environments where the faceplate is likely to take physical knocks, exposure to dust, or contact with tools and equipment during the working day. The steel construction is significantly more impact-resistant than plastic and will not crack, chip, or discolour in the way that standard white fittings can in a working environment. They are most commonly finished in a grey or brushed steel tone and give a functional, industrial appearance suited to utility and commercial spaces. Metal clad fittings are wired in the same way as their plastic equivalents and are available across the same product types, including single and double sockets, switches, and fused connection units. For any installation where durability matters more than decorative finish, metal clad is the trade-standard choice.

Metal clad fittings are the standard choice for garages, workshops, plant rooms, commercial kitchens, warehouses, and any area where electrical accessories are exposed to rough handling or harsh conditions. They are widely used in light industrial and commercial buildings where the electrical installation needs to withstand daily contact with machinery, tools, or cleaning equipment. Outbuildings, garden rooms used for practical work, and agricultural buildings are other common applications. In commercial fit-outs, metal clad accessories are often specified throughout back-of-house areas such as storage rooms, loading bays, and service corridors where robustness takes priority over appearance. They are also used in educational and public-sector buildings in areas accessible to maintenance staff rather than the public. Anywhere that a standard plastic fitting would be at risk of damage through normal site activity, metal clad is the appropriate and practical specification.

Yes, metal clad electrical accessories must be earthed as part of a safe and compliant installation. Because the faceplate is conductive steel, any fault that causes the metalwork to become live would present a serious electric shock risk if the casing were not connected to the earth conductor. Most metal clad fittings include a dedicated earth terminal on the back of the faceplate, separate from the circuit earth connection, specifically for this purpose. The earth connection to the faceplate is a wiring regulation requirement and must not be omitted. This is one of the key differences from plastic accessories, where the non-conductive body means a separate faceplate earth is not required. If you are installing metal clad accessories and are unsure about correct earthing practice, the work should be carried out or checked by a qualified electrician.

The primary difference is the material of the faceplate. Standard plastic switches and sockets use a moulded thermoplastic front plate that is lightweight, non-conductive, and suited to typical domestic and light commercial environments. Metal clad accessories use a pressed steel faceplate that is far more resistant to impact, abrasion, and deformation under physical load. Because the metal body is conductive, metal clad fittings require a faceplate earth connection that plastic fittings do not. Metal clad accessories are also generally bulkier and heavier, with a more utilitarian appearance that suits working environments rather than finished living spaces. In terms of electrical function, both types operate identically and are wired to the same standards. The choice between them comes down to the environment and the level of physical protection the installation requires.

Standard metal clad accessories are designed for indoor use in dry or damp commercial and industrial environments and are not rated for direct outdoor exposure to rain or standing water. For outdoor installations, you need accessories with an appropriate IP rating, with IP44 being the minimum for covered external positions and IP65 required for locations subject to direct water spray. Some metal clad accessories are produced with gaskets and sealed enclosures that give them an IP rating suitable for damp or partially exposed locations, so it is important to check the product specification rather than assume all metal clad fittings offer the same level of ingress protection. For fully exposed outdoor installations, a dedicated weatherproof accessory in a surface-mounted IP-rated enclosure is the correct solution. If you are specifying electrical accessories for a location that straddles indoor and outdoor use, such as a covered loading bay or open-sided workshop, check the product data sheet for the rated IP classification. The weatherproof switches and sockets range at MP Moran covers external locations where a standard metal clad fitting would not be appropriate.

Yes, metal clad accessories can be used in domestic settings and are a practical choice wherever durability is needed within the home. Integral garages, utility rooms, and home workshops are the most common domestic applications, as these areas see the same kind of physical activity as a commercial site. Some homeowners also specify metal clad in boiler rooms and plant cupboards where the functional appearance is appropriate and the risk of accidental damage from pipework or equipment is higher than in a living space. In rooms where appearance matters, the industrial finish of a metal clad fitting will look out of place, and a decorative finish such as satin chrome or white would be the more appropriate choice. There are no regulatory restrictions on using metal clad accessories in domestic locations as long as earthing requirements are met. The decision comes down to whether the functional benefits of a steel faceplate outweigh the aesthetic in the specific room or area.

Metal clad accessories are most commonly surface-mounted on a metal back box, which is the standard approach in commercial and industrial installations where surface wiring in steel conduit is the norm. Surface-mounted metal back boxes are available in a range of depths and are fixed directly to the wall with the conduit entries on the sides or rear. Flush-mounted installation is also possible using a standard steel back box set into a masonry or plasterboard wall, in the same way as a domestic socket installation. Because the faceplate itself is conductive, a metal back box must also be earthed, connecting both the box and the faceplate to the circuit earth. Plastic dry-lining back boxes should not be used with metal clad faceplates in situations where surface earthing continuity of the enclosure is a requirement. If you are unsure which back box suits your installation type, the team at your local MP Moran branch can advise on compatible products.

Metal clad accessories are available across the same product types as standard plastic ranges, covering single and double switched sockets, single and double pole switches, fused connection units, and blanking plates. Switched and unswitched variants are available to suit different circuit requirements, and fused spur units in metal clad are widely used for hardwired appliance connections in commercial kitchens and plant rooms. Metal clad dimmer switches are also produced for installations where both robustness and light control are needed in the same location. Junction boxes, flex outlets, and surface-mounted conduit accessories complete the range for full metal installation systems. Most metal clad accessories share a common fixing footprint with standard accessories, which simplifies replacement and like-for-like upgrading in existing installations. For a full list of metal clad products available at MP Moran, browse the metal clad switches and sockets category online or speak to your local branch.

Yes, metal clad sockets accept standard UK 13A plugs in exactly the same way as any other BS 1363-compliant socket outlet. The socket aperture, pin spacing, and shutter mechanism all conform to the same British Standard, so any standard UK plug will fit and operate correctly. The robust steel faceplate and heavier construction do not affect the socket function in any way. Metal clad sockets are rated for the same maximum current as standard sockets and can be used on ring main or radial circuits without any modification to the circuit design. This compatibility means that metal clad accessories can be used alongside plastic accessories on the same circuit if needed, for example where a garage is served by an extension of a house ring main. There is no requirement to use specialist plugs, cables, or connectors with metal clad socket outlets in normal 13A applications.

MP Moran stocks a full range of switches and socket finishes to cover every project type, from standard domestic fit-outs through to commercial and industrial installations. White switches and sockets are the most widely specified finish for general domestic and light commercial use. Satin chrome switches and sockets are a popular choice for contemporary kitchens, living rooms, and office fit-outs where a brushed metal look is preferred. Black switches and sockets suit modern interiors where a bold, contrasting finish has been specified. Antique brass switches and sockets work well in period properties and traditional interiors. Modular grid switches and sockets allow bespoke multi-function plates to be configured to exact project requirements, and weatherproof switches and sockets are available for outdoor and exposed locations. Visit any of our six branches across London and Hertfordshire or browse the full range online.