A remotely resettable version of the ESS20, an electronic circuit breaker system that protect individual circuits connected to a power supply, is available. The ESS20-1 circuit breaker provides selective circuit protection of DIN-rail factory automation equipment connected to switch-mode power supplies, components such as sensors, actuators, field bus couplers, and controls. Because the ESS20-1 is remotely resettable, production can restart with minimum downtime. In the event of an overload, the ESS20-1 electronically shuts down the circuit. After the source of the fault is cleared, the circuit breaker remotely resets, and production resumes. Compared to a traditional solution, the ESS20-1 eliminates the need for a plant electrician or technician to open a control panel and push the manual reset button to resume protection. Considering the cost of downtime for an assembly line or process can reach thousands of dollars per minute, this feature benefits many areas of the organization, not just the plant. A version is available without remote resettability, where physical isolation will occur each time there is an overload or short circuit. The ESS20-1 circuit breaker prevents an overload in a single circuit from shutting down its 24 Vdc switch-mode power supply, which may interrupt power to multiple circuits and factory components. The ESS20-1 electronically limits the maximum amount of current drawn from the power supply to no more than 1.8 times the set rated current of the breaker, allowing the breaker to trip without causing the power supply to shut down.
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