Product Description
• ZB5L Residual Current operated Circuit-Breakers (hereinafter referred to as circuit-breakers) are newly developed products by Shanghai Huatong. Suitable for AC 50/60Hz circuits with rated voltages of 230V/400V and rated currents from 6A to 63A, they rapidly cut off power when residual currents exceed set values, ensuring safety for personnel and electrical equipment. They also provide overload/short-circuit protection and allow infrequent switching operations.
• Complies with
GB 16917.1 (IEC 61009-1).
Product Advantages
• Compact structure
• Aesthetic appearance
• High breaking capacity
• Convenient and secure wiring
• Reversible line connection
Operating and Installation Conditions
• Ambient temperature: -25℃ to +55℃; 24-hour average ≤ +35℃
• Altitude: ≤3,000m
• Relative humidity:
• ≤50% at +55℃; higher humidity permitted at lower temperatures
• Maximum monthly average relative humidity ≤90% (monthly average temperature ≤ +35℃), with measures against surface condensation
• Pollution degree: Level 2
• Installation category: Classes II and III
• External magnetic fields: ≤5 times Earth's magnetic field in any direction
• Mounting orientation: Typically vertical (handle upward for ON position); installed on 35x7.5mm standard rails
• Environment: No significant shock/vibration
• Additional protection: Under-voltage/over-voltage protection for grid faults:
• Over-voltage setting: 280V ±5%
• Under-voltage setting: 170V ±5%
• Terminal capacity: Maximum conductor cross-section 25mm².