Residual current circuit breaker EFI-4 AC 100/0.03 002062151

Residual Current Device (RCD) is a key element in protecting electrical installations, safeguarding against electric shock and potential fire hazards resulting from insulation failure. The device is designed for use in TN-S, TN-C-S, TT and IT networks where the neutral and earth conductors are separated. The selection of the appropriate differential current (IΔn) depends on the specifics of the protection – values ≤ 300 mA are recommended for protection against indirect contact, and ≤ 30 mA for additional protection.

This four-pole RCD with a rated current of 100 A and AC sensitivity is designed for effective protection of electrical circuits. Its DIN rail mounting design ensures easy installation in a distribution board. The rated differential current is 30 A, making it suitable for securing electrical installations in residential and commercial buildings. A short-circuit strength of 10 kA guarantees reliable operation even in the event of overloads.

Constructional and functional features:

• AC type: Reacts to alternating currents, which is standard in most home and industrial applications.
• Width 4 modules: Compact dimensions allow for efficient use of space in the distribution board.
• Wire cross-section 1…25 mm²: Allows connection of wires of different thicknesses, providing installation flexibility.
• Operating temperature -25…55 °C: A wide range of operating temperatures allows the switch to be used in various environmental conditions.
• Protection class IP20: Provides protection against accidental contact and ingress of solid objects into the device.
• Accessory mounting possible: Allows expanding the functionality of the switch by adding auxiliary contacts or other elements.
• Contact position indicator: Facilitates quick identification of the switch status (ON/OFF).
• Terminal protection: Increases safety during installation and operation of the device.

This switch is characterized by high reliability and durability, as confirmed by its compliance with IEC/EN 61008. Therefore, it constitutes a solid element of the anti-shock protection system, ensuring the safety of users and protecting the electrical installation from damage. The test button allows regular checking of the device's correct operation, which is crucial for maintaining a high level of safety.