Brose had relied on electronic circuit breakers for a long time. WAGO got their chance when a device from the previous supplier failed. “We had to act fast. WAGO created a replacement part for us overnight, which I could take to the construction site in the morning. The replacement worked immediately, and the device also proved to be more powerful than the previous one,” states the Brose technician, recalling the background history. In the time before WAGO, different modules were required for different current ranges. Now, one device suffices. The nominal current for the EPSITRON® ECBs can be set individually from 2 A up to 10 A by using a selection switch. “During expansions of partial variants in our systems, we always had the problem that the warning range was no longer correct. This meant we had to replace the module. The selectivity is now better, and we only have to readjust the warning range for the same device,” reports Gran. As additional advantages of the technology, he cites the higher-density wiring and the ease of cabling using CAGE CLAMP® connection technology. WAGO offers ECBs whose triggering is superior to protective devices that use a thermomagnetic characteristic curve. The EPSITRON® 787 Series ECBs protects devices from excess currents arising on the output side, and they react reliably within a precisely specified time with low tolerances. In addition, they are especially well suited for cases in which the load is connected via a longer cable. Due to the constant monitoring of the loop impedance, the device can distinguish between a short circuit and capacitive loading, even at long cable lengths and small cross-sections.