Residual current circuit breaker with overcurrent protection KZS-2M A B13/0.03 002173203

Reliable protection for your electrical installation

This KZS-2M A B13/0.03 residual current circuit breaker with overcurrent protection is a key element ensuring safety in every electrical circuit. It provides protection against electric shock as well as against the effects of short circuits and overloads, making it indispensable in both home and industrial installations. Its compact size (2 module width) allows for easy mounting in a distribution board.

Functionality and application

The KZS-2M circuit breaker combines the functions of an overcurrent and residual current device, allowing for simultaneous protection against overload, short circuit and dangerous leakage currents. It is intended for use in TN-S, TN-C-S, TT and IT networks where the neutral and earth conductors are separated. Thanks to its A sensitivity, it effectively reacts to alternating and pulsating DC differential currents, providing a high level of safety. The rated current of 13A makes it ideal for protecting circuits with medium loads.

Key features and benefits

• Multifunctionality: Combination of overcurrent and residual current protection in one device – saving space and costs.

• Sensitivity A: Effective protection against AC and pulsating DC leakage currents, increasing safety.

• Characteristic B: Provides fast tripping in the event of a short circuit, while tolerating short-term current surges during device start-up (e.g. motors), minimizing the risk of unnecessary circuit tripping.

• Rated breaking capacity 10kA: Guarantees safe disconnection of the circuit in the event of a short circuit with high current.

• Compact dimensions (2 modules): Facilitates installation even in tight distribution boards.

• Conductor cross-section 1…25 mm²: Versatility of connecting cables of different thicknesses.

• Protection class IP20: Protection against touching fingers and against the ingress of solid objects larger than 12.5 mm.

• Possibility of sealing: Additional protection against unauthorized manipulation of the circuit breaker settings.

Technical parameters in practice

The KZS-2M A B13/0.03 circuit breaker is characterized by a rated voltage of 230V and a frequency of 50Hz, making it compatible with most electrical installations in Poland. The rated differential current of 0.03A ensures a quick response to dangerous leakage currents, and the energy limitation class 3 guarantees minimal damage in the event of a short circuit. The rated insulation voltage Ui is 500V, which provides a high level of safety of the internal insulation elements. The installation depth of 69 mm allows for easy adaptation to standard electrical distribution boards.