Residual current circuit breaker with overcurrent protection KZS-4M 3P+N A C25/0.03 002174926

Residual Current Circuit Breaker with Overcurrent Protection KZS-4M is a reliable device that combines protection against electric shock and protection against overloads and short circuits. It is a key element of any electrical installation, ensuring the safety of people and equipment. Designed for use in TN-S, TN-C-S, TT and IT networks, where the neutral and earth conductors are separated.

This four-pole (3P+N) circuit breaker with a rated current of 25A and C characteristic effectively reacts to overloads and short circuits, protecting circuits from damage. Sensitivity A means that the device is sensitive to both alternating differential currents and pulsating direct currents – which increases the scope of protection. The rated differential current of 0.03A ensures a quick response in the event of a leakage current to earth.

The circuit breaker's design is designed for easy installation and safe operation. A width of 4 modules allows for compact placement in the distribution board. Connection terminals allow connection of conductors with a cross-section from 1 to 25 mm² (solid) or from 1 to 35 mm² (stranded). In addition, the IP20 degree of protection provides protection against accidental contact.

Key features and benefits:

• Combined function: One device provides both residual current and overcurrent protection – saving space in the distribution board and simplifying installation.
• High short-circuit breaking capacity: 6 kA guarantees effective disconnection of the circuit in the event of a short circuit, minimizing the risk of damage.
• C characteristic: Allows starting devices with higher inrush current (e.g. motors) without unnecessary tripping of the circuit breaker.
• Safety of use: IP20 protection degree protects against accidental contact with live parts.
• Versatility of application: Suitable for various types of electrical networks (TN-S, TN-C-S, TT, IT).
• Easy installation: Compact dimensions (4 modules) facilitate installation in tight distribution boards.

The KZS-4M circuit breaker complies with EN 61009 standard, which confirms its high quality and safety of use. It is an ideal solution for both professional installers and end-users looking for reliable protection for their electrical installations. Using this circuit breaker translates into increased safety of use and longer life of electrical devices connected to the protected circuit.