Residual Current Circuit Breaker EFI-P2 25A 2P 30mA Type A, 10kA Breaking Capacity

The Residual Current Circuit Breaker EFI-P2 25A 2P 30mA Type A combines earth-leakage detection and overcurrent protection in a single compact device. It provides residual current sensitivity of 30 mA with Type A detection, meaning it responds to AC and pulsating DC fault currents, while also functioning as a two-pole, 25 A overcurrent protector with a 10 kA short-circuit breaking capacity. The device is intended for residential and light commercial electrical installations where protection against earth leakage, overload and short-circuits is required.

Advantages

This device integrates residual current detection and circuit-breaking for overloads and short-circuits, reducing the need for separate components in a distribution board. Type A sensitivity allows detection of both AC and pulsating DC leakage currents, increasing safety where electronic loads or variable-speed drives are present. The 10 kA breaking capacity meets common installation requirements for effective fault interruption, and the 2-pole design protects both phase and neutral conductors in single-phase circuits.

Suitable for

• Residential apartments and houses where earth-leakage protection is required
• Light commercial premises such as small offices, retail outlets and workshops
• Circuits with electronic appliances, LED drivers or equipment that can produce pulsating DC leakage
• Single-phase distribution circuits requiring combined RCD and overcurrent protection

When it may not be suitable

This device is designed for single-phase, two-pole applications and for systems where 25 A nominal current and 30 mA residual-current sensitivity are appropriate. It is not suitable for three-phase systems that require four-pole protection or for circuits requiring higher nominal current ratings than 25 A. Installations that demand higher breaking capacity than 10 kA or a different residual-current type (for example Type B for continuous DC faults) should select an alternative device.

Key specifications

• Nominal current: 25 A
• Poles: 2 (two-pole)
• Residual current sensitivity: 30 mA
• Residual-current type: Type A (AC and pulsating DC detection)
• Short-circuit breaking capacity: 10 kA
• Function: Combined residual current device (RCD) and overcurrent/circuit-breaker

How to use

Install the device in the distribution board on a compatible DIN rail according to local electrical regulations. Connect the supply phase and neutral conductors to the designated terminals following the manufacturer’s terminal markings and tighten to the recommended torque. Use the test button periodically to verify residual-current tripping operation and follow routine inspection procedures. Ensure upstream and downstream coordination with other protective devices to maintain selective fault clearing when necessary.

What to consider before purchase

• Confirm that a 25 A nominal current and 30 mA residual sensitivity match the circuit protection requirements
• Ensure Type A detection is suitable for the expected fault current waveform (AC and pulsating DC)
• Verify that a 10 kA breaking capacity is adequate for the installation’s prospective short-circuit current
• Check compatibility with the distribution board space, DIN-rail mounting and terminal conductor sizes

Usage recommendations

Use this combined RCD/circuit-breaker in single-phase circuits with mixed resistive and electronic loads, perform regular testing using the built-in test button, and coordinate protection settings with upstream devices to ensure reliable operation and selectivity.