Residual current circuit breaker EFI-4 A 80/0.3 002064545

Residual Current Device (RCD) is a key element ensuring safety in electrical installations, protecting against electric shock and potential fire hazards. Model EFI-4 A 80/0.3, with a rated current of 80A and sensitivity A, is a universal solution for both installers and end-users. Application in TN-S, TN-C-S, TT and IT networks guarantees a wide range of compatibility.

Functions and application

This four-pole Residual Current Device (4P) is designed to protect circuits against the effects of short circuits and overloads, and above all – against electric shock. Thanks to type A sensitivity, it effectively reacts to alternating currents and pulsating direct currents, making it an ideal choice for protecting various receivers, including electronic devices and household appliances. The rated residual current value of 300mA makes the device perfectly suited for fire protection in accordance with DIN VDE 0100-482 and IEC 60364-4-482.

Design and installation

The RCD is designed for mounting on a DIN rail, which facilitates its installation in electrical distribution boards. Compact dimensions (width 4 modules, depth 68mm) allow for efficient use of space in the distribution cabinet. Connection terminals allow the connection of solid and stranded wires with a cross-section from 1 to 25 mm², providing flexibility during installation. Additionally, terminal protection against accidental contact increases work safety. The ability to seal the lever in the "On" and "Off" positions prevents accidental change of the device status.

Key features and benefits

• High reliability: Fully automated production line ensures repeatability of parameters and long-term trouble-free operation.
• Easy identification: QR code placed on the housing allows quick access to technical data and measurement results.
• Contact status indicator: Allows unambiguous identification of the switch position (ON/OFF).
• Universality: Suitable for operation in TN-S, TN-C-S, TT and IT networks.
• Safety: Provides effective protection against electric shock and fire hazard.
• Expandability: Allows mounting of additional accessories (auxiliary contacts, release devices).
• Resistance to external conditions: Suitable for operation at ambient temperature from -25°C to +55°C and has a degree of protection IP20.
• Short-circuit strength: Has the ability to withstand a short circuit of 10kA.

This Residual Current Device is a solid and reliable solution for any electrical system requiring effective protection against the effects of failures and threats to life and property.