Residual current circuit breaker with overcurrent protection KZS-2M A B10/0.03 002173202

Residual Current Circuit Breaker with Overcurrent Protection KZS-2M A B10/0.03 is a reliable and proven solution for protecting electrical installations. It is used to protect against electric shock, both direct and indirect, and to protect devices against fire hazard caused by insulation damage. Additionally, it protects circuits against the effects of short circuits and overloads.

This model of circuit breaker is designed for use in TN-S, TN-C-S, TT and IT networks, where the neutral and earth conductors are separated. Its construction ensures effective protection in various operating conditions.

Product features and application

The KZS-2M circuit breaker combines the functions of an overcurrent and residual current circuit breaker, allowing for compact and effective circuit protection. This reduces the need for separate devices, simplifying installation and saving space in the distribution board. The rated current of 10A and characteristic B make it ideal for protecting lighting circuits, socket outlets and devices with moderate inrush current. Sensitivity A means sensitivity to alternating and pulsating DC differential currents, which increases the level of safety.

Advantages and benefits

• Multifunctionality: Combination of overcurrent and residual current protection in one device.
• Safety: Effective protection against electric shock and fire.
• Versatility: Can be used in various network types (TN-S, TN-C-S, TT, IT).
• Convenient installation: Compact dimensions – 2 modules wide – make it easy to install in the distribution board.
• Wire cross-section: Allows connection of solid and stranded wires with a cross-section from 1 to 25 mm².
• Rated breaking capacity: Ensures safe disconnection of the circuit in the event of a short circuit (15 kA according to IEC 60947-2 and 10 kA according to EN 61009).
• Additional functions: Has a test button to check the correct operation and a contact position indicator for easy identification of the device status.

Construction and technical parameters

The circuit breaker is characterized by a rated voltage of 230V and a frequency of 50 Hz. Its energy limitation class is 3, which ensures high resistance to short-circuit energy. The degree of protection IP20 guarantees protection against accidental contact. The circuit breaker has one protected pole and a simultaneously disconnecting N pole, which increases safety. The rated differential current is 0.03 A, providing adequate sensitivity for detecting leakage currents to earth.