Differential circuit breaker ETI KZS-2M2p EDI 2P 10A B type A 10kA, bottom connection (2172402)

This ETI KZS-2M2p EDI differential circuit breaker is designed to provide combined protection for electrical circuits against overload, short circuit, and residual current faults. It is used in distribution boards in residential, commercial, and general-purpose installations where it is necessary to integrate overcurrent protection and differential protection in a single device. The unit has 2 poles and a rated current of 10 A, which makes it suitable for circuit groups with relatively low load and limited inrush currents, such as lighting circuits and other lines with predominantly active loads. The B tripping characteristic supports operation in circuits where fast response to overload and short-circuit conditions is required. The rated residual operating current is 0.03 A, providing sensitive earth leakage protection and an additional level of personal safety in case of insulation damage or current leakage to exposed conductive parts. With a breaking capacity of 10 kA, the device is intended for networks where higher short-circuit interruption capability is required. It operates at a nominal frequency of 50/60 Hz and complies with IEC 61009, the standard governing differential circuit breakers. These technical parameters confirm its suitability for modern low-voltage installations that require standardized protective equipment and predictable performance under fault conditions. A distinctive feature of this model is the bottom connection, which should be taken into account during panel layout and wiring. The terminal range accepts conductors from 1 to 25 mm², offering compatibility with a broad selection of cable cross-sections commonly used in distribution circuits. This makes installation more flexible when selecting conductors for different line ratings and cabinet configurations. Overall, the ETI KZS-2M2p EDI is a compact protective device that combines two essential functions in one housing. It is practical for use in switchboards where space optimization, circuit protection, and compliance with technical standards are important. The combination of 2-pole design, 10 A rating, B curve, 0.03 A sensitivity, 10 kA breaking capacity, and bottom wiring connection defines a clear application profile for lighting and other standard single-phase circuits.