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Industrial Plugs & Connectors

We stock Knightsbridge industrial plugs, sockets and connectors for site power and commercial work, alongside ceeform trailing adaptors and conversion leads. Our range covers 16A and 32A ceeform fittings across 110V, 240V and 415V, most of them IP44-rated and colour-coded so you can match each part to the right supply and keep temporary distribution tidy on site.

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Ceeform basics: how the system fits together

Ceeform (CEE), better known on site as the commando socket system, is the colour-coded standard used for industrial and site power, and our Knightsbridge range follows it throughout. The core of our range is built around plugs, sockets and connectors, with the same pin pattern repeated so a plug on one lead mates cleanly with the matching socket on the next. That keeps temporary distribution predictable, whether you are feeding a single tool or running power across a commercial space.

The pin count tells you the supply. A 2 pole plus earth (2P+E) fitting carries single-phase power, while a 3 phase, neutral and earth (3P+N+E) fitting carries three-phase. We hold both, so you can build a run for hand tools as readily as for larger three-phase plant.

Reading amperage and voltage at a glance

Two numbers do most of the work when you pick a ceeform part: the amperage and the voltage. Our range runs to 13A, 16A and 32A, with 16A and 32A making up most of the plugs, sockets and connectors. Match the rating to the load and to the supply you are connecting into, and keep the rating consistent along the whole lead.

Voltage is colour-coded, which makes it quick to read on a busy site. The yellow fittings in our range are 110V, the blue are 240V and the red are 415V three-phase. Because the colours are standardised, a mismatch between plug and socket stands out at a glance, so the coding doubles as a safeguard against connecting the wrong supply.

Plugs, sockets, connectors and splitters on site

The four parts in our range each do a specific job. Plugs and line plugs go on the supply end of a lead. Commando sockets receive them, and we hold angled panel mount and surface mount sockets along with appliance inlets for wall and equipment fixing. Connectors join one lead to the next so you can extend a run. Splitters, including 3-way designs, take one feed and share it across several outlets where you need to power more than one item from a single source.

For points where ceeform meets a standard UK supply, we also list trailing adaptors and conversion leads, so a 13A UK socket or plug can tie into a ceeform circuit without rewiring.

IP44 rating and where these belong

Most of the fittings in our range are IP44-rated and outdoor-rated, which covers splashing water and the general grime of site and commercial use. That suits sheltered outdoor work, workshops and temporary installations, though IP44 is not a sealed rating for full immersion. The angled bodies help leads sit clear of walls and panels. As with any industrial wiring, connection should be carried out by a competent electrician.

Frequently Asked Questions

What is a commando socket?
Commando socket is the everyday name for the ceeform (CEE) connectors used for site and industrial power. They are the colour-coded round fittings in our range: yellow for 110V, blue for 240V and red for 415V three-phase, in 16A and 32A ratings. The plugs, connectors and splitters we stock all mate with the matching commando socket.

What does the colour of a ceeform plug or socket mean?
The colour tells you the voltage, which is why the system is so quick to read on site. In our range the yellow fittings are 110V, the blue are 240V and the red are 415V three-phase. The coding is standardised across plugs, sockets and connectors, so a mismatch between plug and socket is easy to spot at a glance. That keeps you from joining a lead into the wrong supply by mistake.

What is the difference between 2P+E and 3P+N+E ceeform fittings?
It comes down to the supply each one carries. A 2 pole plus earth (2P+E) fitting is single-phase, used for the 110V and 240V plugs, sockets and connectors in our range. A 3 phase, neutral and earth (3P+N+E) fitting is three-phase and pairs with the 415V red parts. Pick the configuration that matches your supply, and keep plug, socket and connector consistent along the whole lead.

Which amperage rating should I choose, 16A or 32A?
Match the rating to the load you are running and to the supply you are connecting into. Most of our range is 16A or 32A. As a guide, 16A suits hand tools and lighter site loads while 32A handles heavier equipment. Keep the rating the same along the full lead, from plug through any connector to the socket, and have the work checked by a competent electrician.

Are these plugs and sockets suitable for outdoor use?
Most of the fittings in our range are IP44-rated and outdoor-rated, so they handle splashing water and the dust and grime of site and commercial work. That makes them suitable for sheltered outdoor use, workshops and temporary installations. IP44 is not a sealed rating for full immersion or heavy jetting, so site them where they get reasonable cover. Connection should always be carried out by a competent electrician.

Can ceeform connect to a standard UK plug or socket?
Yes. We list trailing adaptors and conversion leads built for exactly this. One runs from a ceeform plug to a 13A UK socket, and another takes a UK plug to a ceeform socket, so equipment on either standard can join the same circuit without rewiring. They are a tidy way to bridge a UK supply into a ceeform run, or to feed a UK-plug appliance from site power.

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