Overcurrent circuit breaker with residual current device 1+N-pole PKNM-16/1N/C/003-A-MW 236217

Overcurrent circuit breaker with a residual current device (RCD) provides reliable protection for electrical installations, combining the functions of a type C overcurrent circuit breaker and a residual current device. The device effectively protects against the effects of overloads, short circuits and electric shock. Its compact size – only two modules wide – makes it easy to install in distribution boards.

Features and application

This two-pole (1+N) circuit breaker with a rated current of 16A is designed to operate in circuits with a voltage of 230V and a frequency of 50Hz. Characteristic C provides delayed tripping during short-term overloads, which is particularly important for devices with electric motors or other elements generating high starting current. In addition, the built-in residual current device with sensitivity A and rated current of 0.03A effectively detects leakage currents to earth, minimizing the risk of electric shock. Simultaneous disconnection of the N pole increases safety.

Advantages and benefits

• Versatile protection: Protection against overload, short circuit and electric shock in one device.
• Compact size: 2 module width saves space in the distribution board.
• Characteristic C: Ideal for circuits with devices generating high starting currents – pumps, motors, air conditioners.
• High breaking capacity: Rated breaking capacity up to 10kA ensures effective disconnection of the circuit in the event of a short circuit.
• Safety: Residual current device with sensitivity A protects against dangerous leakage currents to earth.
• Versatility: Possibility to connect solid and stranded conductors with a cross-section of 1…25 mm².
• Durability: Made of high-quality materials, resistant to environmental conditions (operating temperature: -25…40°C).

Design and parameters

The circuit breaker is designed in accordance with EN 61009-1 standards and is characterized by energy limitation class 3 and surge category 3. Its installation depth is 70 mm, and the IP20 protection degree provides protection against contact with fingers and solid objects larger than 12.5 mm. The rated impulse withstand voltage Uimp is 4kV, which guarantees resistance to transient overvoltages. The device does not have a mechanical lock, which facilitates its operation during maintenance and repair.