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Fused Spurs

A fused spur, or fused connection unit, gives a fixed appliance such as a boiler, extractor fan or outside light its own fused supply taken from a circuit, so the fuse protects that appliance's cable. This range is Knightsbridge 13A fused spur units, switched and unswitched, with neon indicators, flex outlets, double-pole switching, IP66 outdoor versions and grid fused modules, in finishes including white, brushed chrome and matt black.

Choosing Fused Spurs

A fused spur is a 13A fused connection unit that adds power to an appliance safely through its own fuse, and the Knightsbridge spurs here come switched or unswitched, some with a neon indicator. Choose a fused spur by whether it needs a switch, how the appliance cable leaves it, where it is fitted and the finish of the accessories beside it.

Switched or unswitched

A switched fused spur lets the appliance be isolated at the unit, and double-pole versions such as the CL63BC break both live and neutral. An unswitched spur, such as the M6000F, gives a fused supply with no switch, for appliances that should not be turned off by accident.

Neon indicator and flex outlet

A neon indicator shows when the supply is on. A flex outlet lets the appliance cable leave through the front plate, as on the CL63FBC, rather than through the back box to a separate outlet plate.

Wet and outdoor positions

The OP63N and OP6N are IP66 weatherproof fused spurs in black polycarbonate, for walls outside the building or in wash-down areas.

TypeExampleFeature
Switched, neon, flex outletCL63FBCBrushed chrome
Switched, double poleCL63BCRounded edge
Unswitched, metal cladM6000NFNeon, flex outlet
WeatherproofOP63NIP66, neon
Part MPM6300Anthracite
Grid fused moduleGDM011ABAntique brass

Standards & compliance

BS 1363-4, the standard for 13A fused connection units, is cited on the product pages of most units here, while 12 CU and SN units, such as the CU6000 and SN6000, cite BS 1363-2. The PM6300 range is described as Part M compliant, for contrast and ease of use.

Finishes and plates

Units come in moulded white, curved edge, square edge, ultra low profile, screwless and metal clad styles, in finishes including brushed chrome, polished chrome, antique brass, matt black, gunmetal and anthracite, so a spur can match the switches and sockets already fitted.

Brands we stock in Fused Spurs

Knightsbridge.

The range is Knightsbridge throughout.

Related categories

Spurs mount in a box: see back boxes and pattress boxes for interior work and outdoor electrical boxes for external positions.

Frequently asked questions

What are fused spurs?

A fused spur, or fused connection unit, is a wall-mounted accessory that connects a fixed appliance to a circuit through its own cartridge fuse. The fuse is chosen to suit the appliance and protects its flex or wiring. Fused spurs are often used for boilers, extractor fans, cooker hoods and towel rails. The range here includes switched and unswitched fused spurs.

When do you need an IP65 fused spur?

You need an IP-rated fused spur wherever it could meet rain, dust or splashing, such as on an outside wall feeding garden lighting or a pump. Look for IP65 or higher; IP66 units also resist powerful water jets. Indoor plate spurs are typically IP20 and are not suitable outdoors. The range here includes IP66 weatherproof fused spurs for outdoor use.

How do you choose the right fused spur?

Choose a fused spur by what it feeds, where it goes and how it should look. Decide whether the appliance needs a switch to isolate it, a neon to show power, or a flex outlet for a cable from the front. Match the IP rating to the location and the plate style to nearby sockets, and look for units made to BS 1363-4.

What is the difference between a switched and an unswitched fused spur?

A switched fused spur has a switch, typically double pole, that isolates the appliance without removing the fuse, while an unswitched spur has no switch. Switched spurs suit appliances that need local isolation for servicing, such as boilers. Unswitched spurs suit equipment that should not be turned off by accident, such as alarm panels. The range here includes switched and unswitched fused spurs.

What are the load and supply sides of a fused spur?

The supply terminals take the incoming cable from the circuit, and the load terminals feed the appliance or its flex, with the fuse sitting between them. The terminals are marked on the back of the unit, so connect the cables as marked. Isolate the circuit before working on it, and have the installation done by a competent person.

  • Established 1975
  • Birmingham trade counter
  • UK-only supply

Written by the West Midlands Electrics technical team

Updated

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