Residual-current circuit breaker (RCD) 4-pole 25 A 30 mA E.NEXT EX-P003018

The E.NEXT Residual-current circuit breaker (RCD) 4-pole 25 A 30 mA EX-P003018 is a compact safety device designed to detect earth leakage and disconnect power in three-phase or multipole electrical installations. It provides residual current protection with a rated current of 25 A and a sensitivity of 30 mA, helping to reduce the risk of electric shock and fire due to insulation faults. The device is intended for use in residential and light commercial switchboards where multipole protection and reliable disconnection are required.

Advantages

This 4-pole RCD offers selective and quick disconnection of faulty circuits to improve personal and property safety. Its 30 mA sensitivity balances nuisance tripping and safety for protection against direct contact faults. The unit's compact multipole design allows installation in three-phase circuits and simplifies wiring for balanced systems. Built to common installation standards, the device is suitable for integration into standard DIN-rail switchboards and provides a consistent operating behaviour over its service life.

Suitable for

• Three-phase residential electrical panels
• Small commercial or light industrial installations
• Protection of multipole circuits feeding motors or distribution branches
• Areas where protection against electric shock and earth leakage is required

Key specifications

• Poles: 4-pole configuration for three-phase systems
• Rated current: 25 A
• Residual current sensitivity: 30 mA
• Function: residual-current detection and automatic circuit disconnection
• Mounting: DIN-rail compatible multipole device

How to use

Install the RCD in the distribution board according to local electrical regulations, ensuring correct orientation and secure DIN-rail mounting. Connect the line and neutral/phase conductors to the corresponding terminals and verify tightness of all connections. After wiring, perform a functional test using the device's test button or an external testing tool to confirm proper tripping at the rated residual current. Commission the protected circuit only after confirming correct operation and compliance with applicable installation standards.

Usage recommendations

Regularly test the RCD at least every three months using its test button and arrange periodic inspections by a qualified electrician. Ensure the device is used within its rated current and in suitable environmental conditions; avoid exposure to excessive moisture, dust, or temperatures outside the manufacturer's specified range. For circuits with sensitive electronic equipment, consider complementary overcurrent protection and coordinated device selection to reduce nuisance trips.