Differential circuit breaker ETI KZS-1M UNI B 16/0.01 A type AC 6kA (2176104)

The ETI KZS-1M UNI series device is designed to protect electrical circuits against overload, short circuit, and leakage currents. It combines the functions of an automatic circuit breaker and residual current protection in one housing, which makes it suitable for use in residential, commercial, and general-purpose distribution networks. Such a device is especially useful where compact protection of a single-phase line is required in a distribution board. The 1+N pole configuration allows the phase conductor and neutral to be switched together, improving the clarity of connection and operation in single-phase circuits. The rated current of 16A makes this model appropriate for group circuits with moderate load, including lighting and socket circuits. The B tripping characteristic indicates fast disconnection in circuits without significant inrush currents, so the device is intended for standard household consumers and similar loads. The AC type means that the breaker responds to sinusoidal alternating residual current, which corresponds to typical mains conditions. The residual current rating of 0.01A provides a high level of sensitivity to leakage currents and is used to increase personal and circuit protection where such a setting is required. The breaking capacity of 6kA defines the ability of the device to interrupt short-circuit current up to the specified value, which is an important parameter for protective equipment in distribution lines. The rated frequency of 50Hz/60Hz allows the product to operate in networks using either standard frequency. The nominal cross-section of 110mm² is also specified and should be taken into account during design and connection. The model complies with EN/IEC 61009-1, the standard regulating requirements for differential circuit breakers. Overall, this device is intended for local protection of single-phase electrical circuits in switchboard installations where combined overcurrent and residual current protection is needed in a single modular unit.