BY04L-63 Residual Current Circuit Breaker Ensures Triple Electrical Protection

Its core innovation lies in combining robust overcurrent and short-circuit protection, equivalent to a standard MCB, with highly sensitive residual current detection. The device continuously monitors for leakage currents down to life-saving thresholds (typically 30mA). Upon detecting a hazardous imbalance, it disconnects the circuit within milliseconds, preventing potential electrocution. This integrated triple protection simplifies panel design by eliminating the need for separate RCD and MCB units.

Available across a wide spectrum of applications, the BY04L-63 Residual Current Circuit Breaker offers nine standard rated currents: 6A, 10A, 16A, 20A, 25A, 32A, 40A, 50A, and 63A. Flexible pole configurations include 1P+N, 2P, 3P+N, and 4P. It operates at a frequency of 50Hz, with voltage ratings of 240V AC for single-phase poles (1P+N, 2P) and 400V AC for three-phase configurations (3P, 3P+N, 4P). This versatility ensures suitability for diverse circuit loads in both residential and commercial environments.

Engineered for dependable performance under fault conditions, the series boasts a high short-circuit breaking capacity of 6kA. This ensures it can safely interrupt significant fault currents. Manufactured to stringent international safety standards (IEC 61009-1), it prioritizes long-term reliability and durability. Features include clear trip indication and a robust switching mechanism, confirming its role as a primary safety device.

The BY04L-63 series 6kA RCBO is the ideal solution for enhancing safety in residential and commercial electrical systems. Its compact design efficiently combines vital residual current, overcurrent, and short-circuit protection, offering significant advantages in safety, space utilization, and installation efficiency. This advanced Residual Current Circuit Breaker delivers essential, reliable protection for people and property operating at 240V/400V, 50Hz.