Residual current circuit breaker EFI-P4 AC 25/0.5 002061641

### Protection and safety in your electrical installation

Residual Current Device (RCD) EFI-P4 AC 25/0.5 is a key element ensuring safety in every electrical installation. Its primary function is to protect against electric shock, both in the case of direct and indirect contact with live elements. Additionally, it protects devices from potential fire hazard resulting from insulation damage.

This four-pole RCD, with a rated current of 25A and a sensitivity of 0.5A, is used in TN-S, TN-C-S, TT and IT networks, where the neutral and earth conductors are separated. Thanks to its construction and parameters, it is a reliable protection for both home and industrial installations. The rated residual current value of 0.5A makes it an optimal solution for protecting people and equipment.

Construction features and parameters

The EFI-P4 AC 25/0.5 RCD is characterized by high quality and durability. Its short-circuit strength of 10kA guarantees resistance to sudden current surges, and the IP20 protection degree provides protection against accidental contact. Mounting is done on a DIN rail, which facilitates integration with the existing electrical infrastructure. The device width – 4 modules – allows for efficient use of space in the switchgear cabinet.

The AC application type means sensitivity to alternating residual currents, which ensures effective protection against typical hazards in electrical installations. The cross-section of the connectable multi-wire and solid-core wire is 25 mm², which allows connecting wires of appropriate thickness without fear of overheating or damaging the connections. Rated voltage 415V and rated insulation voltage Ui at 440V guarantee safe operation under standard network conditions.

Practical advantages for installers and users

• Safety first: effective protection against electric shock and fire hazard.
• Versatility of application: compatible with various network types (TN-S, TN-C-S, TT, IT).
• Easy installation: DIN rail mounting simplifies and speeds up installation.
• High reliability: short-circuit strength of 10kA ensures resistance to overloads.
• Clear operation: main contact position indicator facilitates identification of the switch status (ON/OFF).
• Testability: "Test" button allows for regular functional control of the RCD.
• Tamper protection: possibility of sealing the lever in the "On" and "Off" positions prevents unauthorized changes to settings.
• Compatibility with accessories: possibility of mounting additional auxiliary contacts or release units expands the functionality of the device.