Residual current circuit breaker - selective EFI-4 A S 63/0.3 002064754

Residual Current Device – Protection and Safety of Installations

This four-pole residual current device EFI-4 A S 63/0.3 is a key element of every modern electrical installation. It provides comprehensive protection against electric shock and protects devices from damage caused by short circuits and overloads. It is indispensable both in residential and industrial buildings where high reliability and safety are required.

This circuit breaker is characterized by selectivity, which means that in the event of a short circuit in the circuit, only this circuit breaker, which is closest to the fault location, will operate, minimizing the scope of shutdowns and facilitating fault location. This is particularly important in complex installations where quick identification and repair of the fault is crucial.

Functionality and Technical Parameters

The circuit breaker is designed for mounting on a DIN rail, which facilitates its installation and integration with the existing system. The rated current of 63A allows for the protection of circuits with higher power consumption, and the rated voltage of 400V is standard for most electrical installations in Poland. It is worth noting the type A S sensitivity – it provides effective protection against both alternating currents and pulsating direct currents, which is important when powering modern electronic devices.

* Width: 4 modules – compact dimensions allow for efficient use of space in the switchgear cabinet.

* Wire cross-section: Possibility of connecting wires with a cross-section from 1 to 25 mm², which provides flexibility when choosing the appropriate cables.

* Operating temperature: Wide operating temperature range (-25°C to +55°C) allows the circuit breaker to be used in various environmental conditions.

* Short-circuit strength: 10 kA – high resistance to short-circuit currents guarantees reliable operation in emergency situations.

* Degree of protection IP20: Provides protection against accidental contact with live parts.

Application and Compliance with Standards

Residual current circuit breakers of this type are widely used in various types of electrical installations:

* Personal protection: Protection against electric shock during direct or indirect contact with live parts.

* Fire protection: Minimizing the risk of fire caused by damage to cable insulation.

* Application in TN-S, TN-C-S, TT and IT networks: Versatility allows the circuit breaker to be used in various electrical network configurations.

* Compliance with standards: Meets the requirements of IEC/EN 61008 standards, which guarantees safety and reliability of use.

By choosing this residual current circuit breaker, you are investing in your own safety and that of your customers. Its solid construction, high quality of workmanship and compliance with applicable standards make it an ideal solution for every professional and end user looking for reliable electrical installation protection.