Scope of Application
• HUM18LE series miniature Residual Current operated Circuit-Breakers are newly developed products independently researched by our company. Suitable for AC 50Hz circuits with rated voltages up to 400V, rated currents ≤63A, and grounded neutral points. Primarily provide protection against electric shock, overcurrent for building circuits/equipment, and fire hazards caused by ground fault currents from insulation failures.
• Complies with
GB/T 16917.1 and
IEC 61009-1.
Operating Conditions
• Relative humidity:
• ≤50% at +40℃; higher humidity permitted at lower temperatures
• Maximum monthly average relative humidity ≤90% (monthly average temperature ≤ +25℃) accounting for surface condensation
• Mounting: Installed on TH35-7.5 standard rails; generally vertical installation (handle upward for ON position)
• Ambient temperature: -5℃ to +40℃; 24-hour average ≤ +35℃
• Altitude: ≤2,000m
• Environment: No significant shock/vibration
• Installation category: Classes II and III
•
Pollution degree: Level 2
Structural Characteristics
• HUM18LE series miniature Residual Current operated Circuit-Breakers are current-operated electronic type devices combining HUM18 high-breaking-capacity MCBs with residual current releases. When leakage current IΔn reaches the preset threshold, they instantly trip to cut power, providing leakage/shock protection while simultaneously safeguarding against electrical equipment overloads and short circuits.