Compared to general MCBs, BYHB has lower residual voltage, making it more effective in safeguarding electrical equipment.
■ Application Range:
Suitable for low-voltage power supply systems below 400V (50/60Hz), including TT, IT, TN, and other configurations.
■ Performance Features:
· Independent main circuit, auxiliary, and disengagement systems.
· Integrated structure, adaptable to different protection modes.
· Low residual voltage design, without affecting the voltage protection level of the SPD.
· Instantaneous or time-delayed disengagement function with precise sampling.
· Test button for verifying the disengagement system status at any time.
· Wide operating capacity design to meet the requirements of different SPD testing types.
· Standard 35mm guide rail for easy installation and use.
· Reinforced nylon casing with IP20 protection rating.
| Model | BYHB-30 | BYHB-40 | BYHB-50 | BYHB-60 | BYHB-80 | BYHB-100 |
| Test Types | T1/T2 | |||||
| Nominal Operating Voltage Uo (V) | 230/400 | |||||
| Impulse Current Iimp (kA) | 15 | 20 | 25 | 30 | 40 | 50 |
| Maximum Discharge Current Imax (kA) | 30 | 40 | 50 | 60 | 80 | 100 |
| Nominal Discharge Current In (kA) | 15 | 20 | 25 | 30 | 40 | 50 |
| Rated Short-Circuit Current Isc (kA) | 25 | |||||
| Short-Circuit Operating Current Io (A) | 2 | |||||
| Short-Circuit Current Operating Time It (s) | 0.3 | |||||
| Residual Voltage Ures (V) | 300 | |||||
| Connection Capacity | 4～35 mm2 | |||||
| Casing Flame Retardant Rating | UL94V-0 | |||||
| Casing Protection Rating | IP20 | |||||
| Installation Method | DIN:35mm | |||||
| Operating Temperature | -40℃～70℃ | |||||
| Operating Humidity | 5%RH～95RH | |||||
| Altitude | ＜ 2000 m | |||||
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