What is Ampy?

Updated 9 October 2026Ampy

Ampy is the central power distribution in your camper. Six loads, for example water pump, fridge, fan, lights, heating and awning, are connected to one device that switches, protects, measures and even dims each one of them. Four tasks that used to need four components are now in one box: fuse box, relays, dimmer and current measurement.

The difference in everyday use

  • Instead of conventional fuses you simply set the fuse value. Tripping no longer means looking for a spare fuse, but resetting it in the dashboard.
  • Instead of guessing you see live what each output draws: voltage, current and power, measured instead of estimated.
  • Instead of extra wiring you operate everything with a wall push button, the SmartKnob or the dashboard.

And all of this completely local in the vehicle, without cloud and without needing internet. Ampy works together with the other modules in the Camper Jarvis system: water from Fluidy, battery from Volty, light from Lighty, heating from Heaty.

Keeps working without the SmartKnob

Your wall push buttons are connected directly to the module, and all settings are stored in the device itself. If the SmartKnob fails, you simply keep switching and dimming at the push button, and the protection functions stay active. Only the display, dashboard, automations and the double tap for all lights pause until the SmartKnob is back. This is a fallback, not a permanent state: without the SmartKnob you cannot change settings such as fuse values, and dimming only works with push buttons, not with switches. Even a freshly connected device responds to its push buttons straight away, without any setup.

Related questions

Does Ampy work on 12V and 24V?

Both. Ampy detects the vehicle's electrical system automatically, so there is nothing to change.

How is Ampy connected?

The supply goes onto two M6 threaded studs, the loads into lever terminals for up to 4mm²: open, insert, close, no tools needed. The push button wires go into removable spring terminals.

How much current can an Ampy output draw?

24A continuously, up to 32A for short periods, and 120A across all six outputs combined. So even a compressor fridge, an inverter and a parking heater fit on a single output.

Do I still need to buy fuses for Ampy?

Not for the loads connected to Ampy. Every output has an electronic fuse that you adjust instead of replacing.

What happens when a fuse on Ampy trips?

The output switches off and you see it in the dashboard, including the reason. Resetting takes a single tap. If the fuse trips several times in a row, Ampy enforces a short pause so that a genuine fault is not simply glossed over.

Fast, normal or slow: which tripping characteristic should I choose?

The characteristic determines how quickly the fuse cuts out when the current is too high. As a rule of thumb: slow for anything that briefly draws more when it switches on, fast for pure electronics, normal for everything in between. • Choose slow for motors and compressors: water pump, fridge, fan, awning, pop-top roof, inverter. These loads draw several times their continuous current at the moment they switch on, which is completely normal. A fast fuse would trip every time, even though nothing is wrong. • Choose fast for loads without inrush current, such as LED strips, sensors, control units or charging sockets. Here a sudden rise in current is almost always a fault, and then it should cut out quickly. • Normal is the safe choice if you are unsure. A practical tip: if the fuse only trips at switch-on while the continuous current is fine, set it one step slower. Raising the fuse rating instead would be the wrong approach, because the rating still has to match the cable cross-section.

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