Combined residual current circuit breaker with overcurrent protection series RKP 1P+N 25A characteristic C residual current 300mA RKP 1P+N C25A 300mA RKP 1P+N C25A 300MA

RCD circuit breakers with overcurrent protection – protection and safety for installations

The RKP 1P+N series combined residual current circuit breaker is a reliable device that combines the functions of an overcurrent and residual current circuit breaker. It provides comprehensive protection of electrical circuits against the effects of overloads, short circuits and electric shock. It is a key element of every modern electrical installation, both in residential and commercial buildings.

This particular model, with a rated current of 25A and C characteristic, is designed to protect circuits with higher starting impedance – i.e. those characterized by high current draw at startup (e.g. motors, transformers). The C characteristic allows it to react more slowly to short current surges, so it tolerates starting devices with a motor well. A residual current of 300mA provides protection against electric shock in the event of insulation failure or direct contact with live conductors.

Construction and mounting

The RKP 1P+N circuit breaker is characterized by a compact design and mounting on a TH35 rail. The width of the device is 2 modules, which allows for efficient use of space in the switchgear cabinet. Installation is simple and intuitive, and solid construction guarantees long-lasting and trouble-free operation. The device is adapted to operate at ambient temperatures from -5°C to +40°C.

Applications and benefits

• Overload protection: Protects the circuit against overload – like most circuit breakers in this class.
• Short-circuit protection: Quickly disconnects the circuit in the event of a short circuit, minimizing the risk of damage to the installation and fire.
• Protection against electric shock: Detects leakage currents to earth and immediately disconnects the power supply, protecting users from the dangerous effects of electric shock.
• Versatility: Suitable for use in lighting circuits, socket circuits and powering electrical devices with different power consumption.
• Safety: Provides a high level of safety thanks to compliance with IEC 61009 standards.
• Efficiency: Designed to work with conductors with a cross-section of 1-16 mm² (stranded) and 1-25 mm² (solid).
• Durability: Has a high impact current resistance (6kA), which ensures reliable operation even in difficult operating conditions.