4-pole residual current circuit breaker PFIM-25/4/003-MW 235406

Residual Current Device (RCD) is a key element of any electrical installation, ensuring the safety of users and equipment. The PFIM-25/4/003-MW model from Eaton is a four-pole device, designed to protect against electric shock and the effects of short circuits. Its function is to quickly disconnect the circuit in the event of a current difference, minimizing the risk of hazard.

This RCD is characterized by a rated current of 25A and a differential current sensitivity of 0.03A, making it ideal for protecting circuits with medium loads. The rated voltage of 400V and short-circuit strength of 10kA guarantee reliable operation even in difficult conditions. Mounting is on a DIN rail, which simplifies and speeds up installation. The device width of 4 modules allows for efficient use of space in the distribution board.

Versatility and functionality

The PFIM-25/4/003-MW RCD stands out for its ability to be expanded with additional functions. The possibility of adding auxiliary contacts, undervoltage releases and a re-engagement device increases its flexibility and allows it to be adapted to the specific needs of the installation. Screw and busbar terminals (available from above and below) facilitate the connection of wires with a cross-section from 1.5 mm² to 35 mm² (solid) or 1.5 mm² to 16 mm² (stranded). The power supply direction is arbitrary, and the optical contact position indicator makes it easy to check the device status. Additionally, a lock prevents accidental switching on of the RCD after tripping.

• Safety: Provides effective protection against electric shock thanks to its high differential current sensitivity.
• Versatility: The ability to expand with additional functions allows it to be adapted to different applications.
• Easy installation: DIN rail mounting and convenient terminals simplify and speed up installation.
• Reliability: Short-circuit strength of 10kA guarantees stable operation even in the event of a short circuit.
• Wide operating temperature range: The device maintains its properties in the temperature range from -25°C to +55°C.

The device meets safety standards and has a protection class of IP20, which means protection against touching with a finger and solid objects with a diameter of more than 12.5 mm. Power losses are only 3.1W, which translates to energy savings. The RCD is designed to operate independently of the mains voltage – this is important for maintaining the stability of the protection system.