After a thunderstorm rolls through, the red indicator on a few DELTA sockets has gone dark — the surge protection has done its job and sacrificed itself. Instead of calling an electrician to replace the entire socket, the 5UH1300 lets you restore protection in seconds: pull out the spent module, snap in a new one, and the red LED lights up again. No wiring, no tools, no disruption to the office.

How It Works

• Type 3 surge arrester (EN 61643-11): the module sits downstream of the building's main SPD, clamping residual transient overvoltages before they reach sensitive terminal equipment — computers, displays, printers, and network gear plugged into the socket.
• Thermal disconnect with visual indicator: the built-in red LED remains lit as long as the internal varistor and gas discharge tube are intact. When the protective components reach their end of life, the thermal cut-off opens the circuit and the LED goes out — a clear, unambiguous signal that replacement is due.
• Fail-safe design: once the module is spent, it disconnects itself from the mains but the socket continues to deliver power — your devices stay operational, just without surge protection until you swap the module.

Why Replace Instead of Rewire

• No tools, no downtime: the module clips in from the front — no screwdriver, no wire stripping, no need to isolate the circuit.
• Keeps the wall aesthetic intact: the faceplate and frame remain untouched. You are swapping a hidden component, not changing the look of the room.
• Cost-effective maintenance: for offices, hotels, and public buildings with dozens of protected sockets, stocking a handful of 5UH1300 modules is far cheaper and faster than replacing complete socket units.

Technical Specifications