ETI KZS-1M UNI differential circuit breaker C 20A/0.03A type AC 6kA universal connection (2176135)

ETI KZS-1M UNI is a differential circuit breaker designed to protect electrical circuits against overload, short circuit, and residual current leakage. It is intended for installation in distribution boards in residential, administrative, and commercial facilities where combined protection of the line and leakage-current monitoring is required in a single modular device. The 1+N pole configuration makes it suitable for single-phase networks with a working neutral conductor. The device is rated for a nominal current of 20 A, which allows it to be used on group circuits for lighting, socket outlets, and other loads of similar power demand. The residual current rating of 0.03 A provides tripping when dangerous leakage current appears, helping improve electrical safety in the circuit. Type AC indicates response to alternating residual current, while C tripping characteristic makes the unit appropriate for circuits with moderate inrush currents, including equipment that may draw a short-term current surge at switch-on. With a breaking capacity of 6 kA, the breaker can be used in networks with corresponding prospective short-circuit levels and is able to disconnect the faulty section under аварийных conditions. The rated frequency of 50/60 Hz confirms compatibility with standard AC networks operating at either frequency. The device is specified with a nominal cross-section of 110 mm², which defines the conductor connection capability within the design limits of the product. Universal connection simplifies wiring and supports practical installation in modular boards. The breaker complies with EN/IEC 61009-1, the standard governing differential circuit breakers, confirming that its design and performance requirements are aligned with the relevant technical regulations. As part of the KZS-1M UNI series, this model combines overcurrent protection and differential protection in one compact unit, making it a functional solution for organizing circuit protection in homes and small commercial installations.