Residual current circuit breaker with overcurrent protection KZS-2M AC C25/0.03 002173126

Residual Current Device with Overcurrent Protection KZS-2M AC C25/0.03 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.

Protection and Application

This circuit breaker is designed for use in circuits with a voltage of 230V and a rated current of 25A. Thanks to its C characteristic, the circuit breaker reacts quickly to short circuits, while tolerating short-term current surges, which is particularly important when connecting devices with motors or other inductive loads. The rated differential current of 0.03A provides effective protection against electric shock. The device is designed to operate in TN-S, TN-C-S, TT and IT networks, where the neutral and earth conductors may be separated.

Construction and Mounting

The KZS-2M circuit breaker occupies 2 module widths, allowing for easy mounting in standard distribution boards. It has a protection degree of IP20, which means protection against touching with fingers and against the ingress of solid objects larger than 12.5 mm. The connection terminals allow the connection of stranded and solid conductors with a cross-section from 1 to 25 mm². Additionally, the circuit breaker has a simultaneously disconnecting N pole, which increases safety during maintenance and repairs. The contact position indicator facilitates visual control of the device status.

Parameters and Compliance

The device meets the requirements of EN 61009 and IEC 60947-2 standards, guaranteeing high quality and reliability. The rated short-circuit breaking capacity is 15 kA (according to IEC 60947-2) and 10 kA (according to EN 61009), which ensures effective protection of the installation in the event of a short circuit. The energy limitation class is 3, which indicates high resistance to short-circuit energy. The device operates at a frequency of 50 Hz and has a rated insulation voltage Ui of 500V.