Residual current circuit breaker 3P+N 63A 300mA 10kA B+ CFB663D

Safety and Reliability in Your Installation

A 3P+N 63A residual current circuit breaker (RCCB) is a key element ensuring the protection of people and equipment in electrical installations. The device is designed to quickly disconnect circuits in the event of leakage currents, minimizing the risk of electric shock. This model, with a rated current of 63A and a sensitivity of 300mA, is ideal for protecting circuits with higher loads, such as those powering electrical appliances in homes, commercial buildings, or workshops.

This RCCB is characterized by high resistance to mechanical and electrical damage, which translates to long and trouble-free operation. DIN rail mounting simplifies installation and integration with existing distribution boards. The locking mechanism prevents accidental switching on after tripping, increasing user safety.

Key features and benefits

• High breaking capacity: 10kA provides effective protection of the installation against the effects of short circuits.
• Wide range of applications: Rated current of 63A allows for protection of circuits with higher power consumption.
• DIN rail mounting: Enables quick and easy installation in standard distribution boards.
• Mechanical lock: Provides additional safety by preventing accidental re-engagement of the breaker after it has been tripped by a differential current.
• Solid construction: Made of high-quality materials guarantees durability and reliability of the device.
• Compliance with standards: Meets the required safety standards, ensuring compliance with regulations.
• Wire cross-section: Accepts solid wires with a cross-section of 1…25 mm² and stranded wires 1…16 mm², providing flexibility in wire selection.
• Operating temperature: A wide range of operating temperatures (-25°C to +70°C) allows use in various environmental conditions.

Technical parameters and application

The breaker has 4 poles (3P+N), which means it protects the phase, neutral and PE protective conductor. Its C characteristic allows it to react more slowly to short current surges, so it tolerates the starting of devices with a motor – pumps, compressors or power tools. The rated impulse voltage withstand of 4kV provides resistance to overvoltages in the electrical network. The IP20 degree of protection protects against touching with fingers and solid objects larger than 12mm – the device is intended for installation in dry indoor rooms. Additional options allow you to adapt the breaker to the specific requirements of the installation.