Knightsbridge IN006 blue industrial plug; one separate selection example

November 4, 2026 APM Plumbing & Electrical

Industrial plugs, connectors and sockets: choose the right form

An industrial plug, an inline connector and a mounted socket can look similar in a product gallery. They do different jobs. Start by identifying the form you need, then match the exact electrical and mechanical specification.

This guide uses three separate Knightsbridge examples to explain those choices. They are individual products, not a checked or supplied connection set. The yellow 110V socket below is a different voltage example from the blue 240V parts.

First, identify the form

Plug: the male cable-end part

A plug has projecting contacts and mates with the correctly specified connector or socket. Ask for the exact plug reference when replacing an existing part. A photograph showing the right colour and number of contacts is only a starting point.

Inline connector: the female cable-end part

An inline connector provides the mating connection at a cable end. Check the model, contact arrangement and keying against the required plug. A connector and a mounted socket may both receive a plug, but their mounting forms serve different requirements.

Mounted socket: a fixed form

A surface-mount socket has a body intended for fixing to a surface. A panel-mount socket is a separate form: choose the exact mounting arrangement specified for the equipment. Confirm the required enclosure, mounting fit and environmental suitability before ordering.

Original APM checklist: choose plug, inline connector or mounted socket, then check exact parts, mating fit, markings, environment and contents — Original APM selection checklist, not a wiring diagram. The three forms are separate options, not a matched set.

Three examples to compare by form

Follow each product link for the current listing. Confirm the supplied model, revision and contents when matching an existing installation. Images of other forms in a gallery do not establish a complete kit.

1. Blue industrial plug — Knightsbridge IN006

Knightsbridge IN006 blue industrial plug, catalogue photograph — Plug example: confirm the actual IN006 reference and supplied contents.

The IN006 manufacturer reference identifies a 240V, 16A, 2P+E plug rated IP44. Use it as a plug-form example; confirm the exact mating connector and supplied part before purchase.

View the Knightsbridge IN006 blue 16A plug

2. Blue inline connector — Knightsbridge IN007

Knightsbridge IN007 blue inline industrial connector, catalogue photograph — Inline-connector example: check the reference and required mating plug.

The IN007 manufacturer reference identifies a 240V, 16A, 2P+E connector rated IP44. Matching headline ratings alone does not verify a particular connection: compare the actual models, keying and supplied revisions.

View the Knightsbridge IN007 blue 16A connector

3. Yellow angled surface socket — Knightsbridge IN003

Knightsbridge IN003 yellow angled surface-mount industrial socket, catalogue photograph — Surface-socket example: a separate 110V product with its own mounting requirements.

The IN003 manufacturer reference identifies a 110V, 16A, 2P+E angled surface-mount socket rated IP44. Select its matching plug and supply requirements separately; it is not a mating recommendation for either blue 240V example above.

View the Knightsbridge IN003 yellow surface-mount socket

Check these details together

Exact part and mating model: read both manufacturers' model references. Identify plug, inline connector, surface socket or panel socket.
Voltage and current: compare the marked ratings with the equipment specification. Have the installer check the load, cable and protective arrangement together.
Contacts and keying: confirm the specified pole, neutral and earth arrangement and contact position. Colour or contact count alone does not establish the function of each contact or a safe match.
Environment: check the manufacturer's IP rating and conditions for the complete installed connection. Do not treat a broad description such as “weatherproof” as permission for every location.
Mounting and cable fit: confirm the exact mounting form and the cable and terminal requirements in the supplied instructions.
Pack contents: confirm what is supplied. A catalogue photograph of another form does not establish an included accessory, mating part or assembled set.

Send the details that make part matching easier

Send clear external photographs of the existing part, its markings, the mating connection and the equipment model, plus the quantity required. Avoid opening electrical equipment to obtain a photograph. If the markings are unreadable, ask the installer to identify the required part.

Call or WhatsApp 020 8702 8080 or 07737 263641 for part-matching help. Contact us if quantity or timing is important. Check delivery information and the options shown at checkout.

Manufacturer references

These references identify the example products. Follow the documentation for the actual supplied revision and have a competent installer verify suitability for the equipment and location.

Filed in: Buying guides, Industrial plugs and connectors

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