CQB2HL-63 10kA Residual Current Operated Circuit Breaker with Over-current Protection (Electronic)
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The CQB2HL-63 10kA Residual Current Operated Circuit Breaker with Over-current Protection is designed for enhanced circuit protection in industrial, commercial, high-rise, and residential installations. This essential device offers overload and short circuit protection, ensuring safety and reliability in electrical systems. It features adjustable tripping curves (B, C, D) and is engineered to protect individuals from indirect contacts while providing additional safeguards against direct contacts. Moreover, it serves to mitigate the fire hazards associated with insulation faults, conforming to the stringent IEC 61009-1 standards.
Specifications
| Specification | Details |
|---|---|
| Rated voltage (V) | 230V~(1P+N, 2P), 400V~(3P/3P+N/4P) |
| Rated current (A) | 6, 10, 16, 20, 25, 32, 40, 50, 63 |
| Rated tripping current I△n(mA) | 30, 50, 75, 100, 300 |
| Poles | 1P+N, 2P, 3P, 3P+N, 4P |
| Rated breaking capacity lcn(A) | 10000 |
| Mechanical & Electrical life | Mechanical ≥20000, Electrical ≥6000 |
| Tightening torque (N.m) | 3.5 |
| Pollution degree | 2 |
| Protection class | IP20 |
| Overvoltage category | Ⅱ, Ⅲ |
| Tripping characteristics | 2 |
Additional Information
Nominal operation conditions:
- Ambient temperature range: -5℃ to +40℃, average temperature in 24 hours not exceeding +35℃
- Altitude: ≤ 2000m
- Relative humidity: Not exceeding 50% at maximum temperature of +40℃; higher humidity is permissible at lower temperatures, e.g., RH can be 90% at +20℃
- Mounting type: Din rail embedded (TH35-7.5)
- Installation conditions: The circuit breaker should be mounted vertically, away from significant impacts and vibrations, with the outer magnetic field not exceeding five times the Earth’s magnetic field.
Tripping Characteristics
| Item | Type | Rated current ln(A) | Initial status | Time limit for tripping or non-tripping | Expected result | Remarks |
|---|---|---|---|---|---|---|
| a | B, C, D | 1.13ln | Cold | t ≤ 1h | Non-tripping | Current smoothly rises to specified value within 5s |
| b | B, C, D | 1.45ln | Following previous test | t < 1h | Tripping | |
| c | B, C, D | 2.55ln | Cold | 1s < t < 60s (ln ≤ 32A) 1s < t < 120s (ln > 32A) |
Tripping |
Conductor Requirements and Cross-Sectional Area
| Copper cross-section (mm²) | Rated current In(A) |
|---|---|
| 1 | In ≤ 6 |
| 1.5 | 6 < In ≤ 13 |
| 2.5 | 13 < In ≤ 20 |
| 4 | 20 < In ≤ 25 |
| 6 | 25 < In ≤ 32 |
| 10 | 32 < In ≤ 50 |
| 16 | 50 < In ≤ 63 |
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