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BT Master Telephone Socket - Polished Chrome Rounded Edge

£999
The RRP is the manufacturer's recommended retail price of the item.
Limited Stock
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Description

The Knightsbridge CL73PC is a BT master telephone socket with a polished chrome rounded edge faceplate constructed from 304 stainless steel. The socket provides the primary connection point for incoming telephone lines and includes a built-in surge arrestor and R/C circuit filter to protect connected equipment from voltage spikes on the line.

Designed for residential and light commercial installations requiring main line access, the master socket allows for line testing and fixed resistance checks without needing to disconnect the wiring. The screw terminals provide secure connections for incoming and outgoing telephone cables, and the socket conforms to BS 5733 standards for telephone outlet installations.

The 85.75mm square faceplate features rounded edges and a built-in gasket that sits flush against the wall, reducing dust ingress behind the plate. The polished chrome finish on the stainless steel provides a reflective surface that pairs with traditional and contemporary interiors where metallic accents are used across switches, sockets and door furniture. The 25mm minimum back box depth requirement matches standard UK electrical back boxes.

Specification
Height 85.75mm
Width 85.75mm
Depth 22.1mm
Projection 7.5mm
Min. Mounting Box Depth 25mmmm
Plate Depth 7.5mm
Construction 304 Stainless steel
Finish Polished Chrome
IP Rating IP20
Terminal Screw
Warranty 2 Year Guarantee
Downloads

Product Specification Sheet

Frequently Asked

What is a master telephone socket?

A master socket is the primary connection point where the incoming telephone line from the external network enters the property. It includes filtering and surge protection components and allows line testing without disconnecting internal wiring. Secondary sockets elsewhere in the property connect back to the master socket.

What back box depth is required?

A 25mm minimum back box depth is needed for installation. The faceplate adds 7.5mm projection from the wall once fitted.

Is this a screw-fixed or screwless faceplate?

This is a screw-fixed faceplate. The two visible screw fixings at top and bottom secure the plate to the back box. For screwless variants in the same finish, search for Knightsbridge screwless telephone sockets.

What other finishes are available?

Knightsbridge produces this rounded edge master socket style in a range of finishes including brushed chrome, polished brass, satin brass, black nickel and white. Use the search function or filters to find other variants in stock at Niori.

Shipping & Returns

Free worldwide delivery

Free worldwide delivery on all orders over £99. International orders for third-party brand products may be subject to an additional courier surcharge based on volumetric weight, particularly on larger lighting fixtures — if a surcharge applies, our team will email you with the amount before dispatch and you can proceed or cancel for a full refund. See full delivery terms.

Returns

30-day returns window from delivery. As all our products are electrical or lighting goods, returned items must be inspected and recertified by a qualified electrician before resale — the cost of this inspection (25–40% of the item value) is deducted from your refund. Customers pay return shipping. Made-to-order, special-order and clearance items cannot be returned. See full returns policy.

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    Description

    The Knightsbridge CL73PC is a BT master telephone socket with a polished chrome rounded edge faceplate constructed from 304 stainless steel. The socket provides the primary connection point for incoming telephone lines and includes a built-in surge arrestor and R/C circuit filter to protect connected equipment from voltage spikes on the line.

    Designed for residential and light commercial installations requiring main line access, the master socket allows for line testing and fixed resistance checks without needing to disconnect the wiring. The screw terminals provide secure connections for incoming and outgoing telephone cables, and the socket conforms to BS 5733 standards for telephone outlet installations.

    The 85.75mm square faceplate features rounded edges and a built-in gasket that sits flush against the wall, reducing dust ingress behind the plate. The polished chrome finish on the stainless steel provides a reflective surface that pairs with traditional and contemporary interiors where metallic accents are used across switches, sockets and door furniture. The 25mm minimum back box depth requirement matches standard UK electrical back boxes.

    Specification
    Height 85.75mm
    Width 85.75mm
    Depth 22.1mm
    Projection 7.5mm
    Min. Mounting Box Depth 25mmmm
    Plate Depth 7.5mm
    Construction 304 Stainless steel
    Finish Polished Chrome
    IP Rating IP20
    Terminal Screw
    Warranty 2 Year Guarantee
    Downloads

    Product Specification Sheet

    Frequently Asked

    What is a master telephone socket?

    A master socket is the primary connection point where the incoming telephone line from the external network enters the property. It includes filtering and surge protection components and allows line testing without disconnecting internal wiring. Secondary sockets elsewhere in the property connect back to the master socket.

    What back box depth is required?

    A 25mm minimum back box depth is needed for installation. The faceplate adds 7.5mm projection from the wall once fitted.

    Is this a screw-fixed or screwless faceplate?

    This is a screw-fixed faceplate. The two visible screw fixings at top and bottom secure the plate to the back box. For screwless variants in the same finish, search for Knightsbridge screwless telephone sockets.

    What other finishes are available?

    Knightsbridge produces this rounded edge master socket style in a range of finishes including brushed chrome, polished brass, satin brass, black nickel and white. Use the search function or filters to find other variants in stock at Niori.

    Shipping & Returns

    Free worldwide delivery

    Free worldwide delivery on all orders over £99. International orders for third-party brand products may be subject to an additional courier surcharge based on volumetric weight, particularly on larger lighting fixtures — if a surcharge applies, our team will email you with the amount before dispatch and you can proceed or cancel for a full refund. See full delivery terms.

    Returns

    30-day returns window from delivery. As all our products are electrical or lighting goods, returned items must be inspected and recertified by a qualified electrician before resale — the cost of this inspection (25–40% of the item value) is deducted from your refund. Customers pay return shipping. Made-to-order, special-order and clearance items cannot be returned. See full returns policy.