Availability and safety of production equipment are paramount in modern manufacturing plants. However, 24 V DC switch-mode power supplies, which are widely used in industry today, may stop entire plants as their self-protecting characteristics will shut down the output in the event of overload or short circuit currents, with the result that one faulty load in the system can lead to complete disconnection of all loads.
Electronic overcurrent protection provided by the E-T-A electronic circuit protector ESX10-T helps to overcome this problem and ensures selective disconnection of faulty load circuits even with high cable attenuation. The fast response time of the ESX10-T will ensure stability of the output voltage and prevent catastrophic failures of the entire system. The integral current limitation characteristics of the ESX10-T contribute to safety and selectivity in operation. Short circuit currents will be limited to 1.8 times rated current, thus a fault in one circuit can be remedied while the switch-mode power supply continues to provide power to the remainder of the system. Even with long load lines only the faulty circuit will be disconnected: quickly, reliably and selectively.
The E-T-A ESX10-T is designed for convenient snap-on symmetrical rail mounting, and its extremely small width of 12.5 mm and 80 x 80 mm mounting envelope represent key benefits. For multi-way applications a number of protectors may be mounted side-byside. The 24 V DC entry line as well as the load terminal are directly connected to protected
plus and common by means of 10 mm² screw terminals. Plug-in type signal busbars allow convenient wiring of auxiliary signals (single or group signalling).