Residual current circuit breaker with overcurrent protection KZS-2M AC B25/0.03 002173106

Reliable protection for electrical installations and people

The KZS-2M AC B25/0.03 residual current circuit breaker with overcurrent protection is a comprehensive solution ensuring safety in electrical circuits. It protects against electric shock, both in the case of direct and indirect contact with live elements, and also protects devices from damage caused by short circuits and overloads. It is a key element of every modern electrical installation, both in residential and industrial buildings.

Functionality and application

This circuit breaker combines the functions of an overcurrent circuit breaker and a residual current circuit breaker, allowing for effective protection against various types of hazards. Thanks to the AC sensitivity, it reacts to alternating leakage currents, which is particularly important in protecting against hazards resulting from insulation damage. The use of characteristic B ensures fast tripping in the event of a short circuit, while allowing for trouble-free starting of devices with motors – which generate temporary starting currents. The circuit breaker is used in TN-S, TN-C-S, TT and IT networks, where the neutral and earth conductors are separated.

Key features and benefits

• Comprehensive protection: combination of overcurrent and residual current protection in one device.
• High sensitivity: AC sensitivity ensures effective protection against alternating leakage currents.
• Characteristic B: ideal for circuits with devices generating inrush currents (e.g. motors).
• Rated differential current 0.03A: ensures a quick response to dangerous leakage currents.
• Short-circuit capacity 10kA: guarantees safe disconnection of the circuit in the event of a short circuit.
• Mounting on TH35 rail: standard mounting simplifies installation and replacement.
• Width 2 modules: compact dimensions save space in the switchgear cabinet.
• Wire cross-section 1…25 mm²: allows connection of wires of different thicknesses.
• Protection class IP20: provides protection against accidental contact.
• Possibility of sealing: additional protection against unauthorized switching on or off of the circuit breaker.

The KZS-2M AC B25/0.03 circuit breaker is characterized by a rated current of 25A, a rated voltage of 230V and a tripping characteristic of B. It has a rated differential current of 0.03A, AC sensitivity and a short-circuit capacity of 10kA. Its width is 2 modules.

The KZS-2M AC B25/0.03 circuit breaker is a solid and reliable device that will meet the expectations of even the most demanding installers and ensure the safety of end users for many years of operation.