The xEffect NZM -PX -TAZ series circuit-breakers with Power Expert Release (PXR) tripping electronics cover applications for full-range protection, including earth fault protection, in just four compact sizes and are suitable for the IEC market. The integrated energy measurement function provides currents, voltages and active energy (kWh) with accuracy class 1 in accordance with IEC 61557-12. ARMS maintenance mode and zone selectivity for extended protection included. Test function and settings via micro USB interface directly on the switch. Installation is always flexible thanks to modular function groups and can be supplemented by the extensive range of accessories. RMS value measurement and thermal memory.