Circuit breaker ETI ETIMAT 10 3P+N 25A D 10kA (2156718)

ETIMAT 10 by ETI is an automatic circuit breaker intended for protecting AC electrical circuits against overloads and short circuits. The 3P+N configuration makes it suitable for four-wire three-phase systems, where three phase conductors and the neutral conductor must be switched separately. This design is commonly used in distribution boards for residential, commercial, and small industrial installations, especially where grouped loads need coordinated circuit protection. The device is rated at 25 A, which defines its use in lines with an appropriate calculated load. The D tripping characteristic indicates suitability for circuits with high inrush currents, such as equipment that draws a brief but significant current peak at start-up. For such applications, the breaker helps maintain protection without unnecessary tripping during normal switching-on conditions. The breaking capacity of 10 kA is an important parameter for circuits where prospective short-circuit currents may be elevated, allowing the device to interrupt fault currents within its rated limits. This model is designed for operation in AC networks with a nominal voltage of 400 V and a nominal frequency of 50/60 Hz. The rated impulse withstand voltage Uimp of 6 kV shows its ability to withstand short-duration voltage surges that can occur in the electrical system. These values are relevant when selecting modular protection equipment for switchboards and other distribution assemblies. The conductor connection range of 1 to 25 mm² allows use with a broad selection of cable and wire cross-sections, which simplifies installation and system integration. ETIMAT 10 complies with IEC/EN 60898-1 and IEC 60947-2, confirming its classification as a modular protective and switching device for low-voltage electrical installations. With its 3P+N layout, 25 A rating, D curve, and 10 kA breaking capacity, this circuit breaker is a practical choice for protecting three-phase circuits where both load characteristics and fault-current parameters must be taken into account.