— Double-Pole Isolation, High-Breaking-Capacity Terminal Protection
In terminal distribution systems, certain circuits require simultaneous overcurrent protection for both the phase and neutral conductors, along with earth leakage protection. The NB1L series 2P residual current circuit breaker is designed precisely for this demand. Within a two-module-wide housing, it integrates two-pole overcurrent protection and a high-sensitivity residual current protection function. With a rated short-circuit breaking capacity as high as 10,000 A, an operating voltage of 230 V and a frequency of 50 Hz, it is the ideal protective device for demanding terminal circuits in residential, commercial and certain light industrial settings. The product has obtained international certifications such as CE and EAC and complies with the GB 10963.1 standard, delivering complete protection in a compact form.