Circuit breaker for DC applications PKZ-SOL

thermal-magneticDCoverload

The PKZ-SOL string circuit breaker from Eaton’s Moeller series provides a fuseless alternative for protection against short-circuit currents. To ensure maximum protection, each PKZ-SOL device is installed inside a customer-specific junction box. An auxiliary contact provides information on the switching status, while the documentation contains a diagram that explains the exact relationship between the tripping current of the protective device and the short-circuit current of the PV modules. String circuit breakers offer a distinct advantage over fuses because they are immediately ready for operation after they have tripped and the cause has been rectified. The adjustable trip settings make it possible to fine-tune the devices to the short-circuit current that is actually present at the string. The thermal release will already respond if the current is exceeded by a factor of 1.05 to 1.3, while the magnetic release will trip at 6 times the current.