Residual Current Circuit Breaker - short-time delay EFI-4 A G/KV 40/0.03 002062748

Protection and safety in your electrical installation

The EFI-4 A G/KV 40/0.03 residual current circuit breaker (RCCB) is a key element ensuring the safety of your electrical installation. This device effectively protects against electric shock, both from direct and indirect contact, and also protects devices from damage caused by short circuits or leakage currents. It is a reliable solution for both professional installers and end-users looking for comprehensive protection in their home or business.

Functionality and application

The RCCB with A G/KV characteristics is designed for use in TN-S, TN-C-S, TT and IT networks. Its A technology construction means it reacts to both AC and pulsating DC currents, increasing the range of protection. The G/KV characteristic provides delayed tripping with short-term surge differential currents, minimizing the risk of unnecessary circuit disconnection when starting devices with motors or other inductive loads. The rated current of 40A and the sensitivity of 30mA make it an ideal choice for protecting circuits with medium loads.

Construction and installation

The circuit breaker is designed for easy mounting on a DIN rail. Compact dimensions (4 module width) allow for efficient use of space in the distribution board. Connection terminals allow connection of wires with a cross-section from 1 to 25 mm², both solid and stranded. Additionally, terminal protection against contact under voltage increases safety during installation and maintenance. The ability to seal the lever in the "On" and "Off" positions prevents accidental change of the circuit breaker status. It is also worth mentioning the possibility of expanding with additional accessories such as auxiliary contacts or release mechanisms.

Key features:

• High reliability: Thanks to the fully automated production line, ETI Polam guarantees the high quality of each circuit breaker.
• Fast identification: Each circuit breaker has a unique QR code containing detailed technical data and measurement test results – this facilitates verification and servicing of the device.
• Versatility: Suitable for use in various types of networks (TN-S, TN-C-S, TT, IT).
• Overload and short-circuit protection: Provides effective protection of the circuit against the effects of electrical failures.
• Contact status indicator: Allows quick visual control of the circuit breaker status (ON/OFF).
• Interference resistance: A G/KV characteristic minimizes the risk of false tripping caused by interference in the network.

This circuit breaker is characterized by a rated current of 40A and a rated voltage of 400V. The rated differential current is 30mA, and the number of poles is 4. The short-circuit withstand (Icw) reaches 10kA, the rated frequency is 50/60 Hz, and the degree of protection (IP) is IP20. It allows connection of wires with a cross-section from 1 to 25 mm².

Remember – correct selection and installation of a residual current circuit breaker is a guarantee of safety for your electrical installation!