circuit breaker in fixed design, IEC 60947-2, grand. const. 3, 3-pole, In=4000A ... 690V AC 50/60Hz, breaking capacity H Icu=100/85kA with 500/690V, ETU600 LSI tripping unit upgradeable, colour display, Bluetooth, USB interface, basic protection LT, ST, INST, the neutral conductor requires an external N current sensor, tripping signal contact block (1 CO), horizontal rear connections with internal voltage socket on the lower main current paths, with VTM680 module, with communication capability, integrated measuring function type PMF-3 Advanced Power Monitoring, voltage, energy, power, frequency, asymmetry, temperature, harmonics, THD manual control with mechanical locking, without motor control, ready-to-switch signal contact block, auxiliary (aux) contact block 4 NO+4 NC, without locking magnet (DC), spring-loaded accumulator only with mechanical locking, without remote recovery magnet (RR), instantaneous (0.08 s) and short delay (0.2 s) minimum voltage coil (UVR), DC 24 V, without 1st auxiliary release, Option F19 = COM190 PROFINET IO Modbus TCP communication module 2 switched Ethernet ports internal circuit breaker Option T40 = IP41 front panel.