Residual current circuit breaker - short-time delay EFI-2 A G/KV 25/0.03 002062727

Protection and safety in your electrical installation

This two-pole residual current circuit breaker EFI-2 A G/KV 25/0.03 is a key element ensuring safety in every electrical circuit. It is used to protect people from electric shock, both in the event of direct and indirect contact with live parts, and to protect devices from damage caused by short circuits or overloads. It is indispensable in home, industrial and commercial installations where high reliability and effectiveness of protection are required.

Functionality and application

The type A G/KV residual current circuit breaker is characterized by high sensitivity to differential currents, which allows for quick detection of irregularities in the circuit. Type A means that it reacts to both alternating currents and pulsating direct currents – which is particularly important in modern installations powering electronic devices. The G/KV version (short-circuit) means that the circuit breaker copes well with loads with high inrush current, such as motors or transformers, without unnecessarily disconnecting the circuit. Mounting is done on a DIN rail, which facilitates integration with the existing electrical infrastructure.

Key features and benefits

• Fast reaction: Rated differential current of 30 mA ensures effective protection against electric shock.
• Versatility: Suitable for operation in TN-S, TN-C-S, TT and IT networks.
• Interference resistance: Type A provides protection against alternating and pulsating DC currents.
• High durability: Short-circuit strength at 10 kA guarantees reliable operation even in difficult operating conditions.
• Easy installation: Mounting on a DIN rail and the possibility of using insulated busbars facilitate installation.
• Safety of use: Protection class IP20 protects against accidental contact with live parts.
• Wide connection range: Possibility to connect wires with a cross-section from 1 to 25 mm².
• Clear operation: Contact position indicator makes it easy to identify the breaker status (ON/OFF).

Technical parameters in practice

The circuit breaker is designed to operate at ambient temperatures from -25°C to 55°C, which makes it suitable for indoor and outdoor applications (with appropriate housing). The rated insulation voltage Ui is 500 V, and the rated impulse withstand voltage Uimp is 4 kV – which ensures high resistance to overvoltage. The rated current of 25 A allows for protection of circuits with medium power consumption. The value of the rated differential current is 30 mA - a standard value providing effective protection for people. The short-circuit tripping characteristic (G/KV) minimizes the risk of unnecessary disconnection of the circuit when starting devices with a motor or transformer. The width of 2 modules allows for efficient use of space in the switchgear.