A fused spur (FCU) is a fixed connection point with its own fuse — used for appliances that are wired directly rather than plugged in, like cooker hoods, dishwashers, or bathroom extractor fans.
🏠Homeowner view
A fused spur, or Fused Connection Unit (FCU), looks like a socket but without holes for a plug. It's wired directly to an appliance and has its own replaceable fuse inside. You need one when an appliance is meant to be permanently connected rather than plugged in — common examples are kitchen appliances (dishwasher, washing machine, fridge freezer), bathroom extractor fans, cooker hoods, electric towel rails, and outdoor power supplies. The fuse inside (usually 3A or 13A depending on the appliance) provides additional protection for the flexible cable feeding the appliance. An FCU can be switched or unswitched — a switched FCU lets you isolate the appliance easily. They can also be fitted with a neon indicator so you can see at a glance whether power is on.