The hybrid EBU circuit breaker (Electronic Breaker Unit) has been particularly designed for the protection of AC UPS systems. The unit effectively ensures a stable supply and thus real power safety. The circuit breaker consists of an MCB and an add-on electronic circuitry, which takes over measuring and evaluation tasks. The product is available with the typical MCB ratings 6 A, 10 A and 16 A with B and C characteristics and is directly operated at the output of the corresponding UPS. The device can be adjusted to the capabilities of the UPS used. In the event of a failure the circuit breaker will disconnect only the faulty path. A selective protection of UPS applications is therefore ensured.
The electronic circuit breaker EBU can be adjusted to the current rating of the UPS and the rated current of the load by means of a rotary switch.