The CNC YCB7-63N 3P C20 miniature circuit breaker is designed to protect three-phase electrical circuits from overloads and short circuits. With a 20A rated current and C-type tripping curve, it is suitable for circuits with moderate inductive loads such as motors, HVAC systems, and industrial lighting.
Operating at 400V AC, 50/60Hz, this breaker features a thermal-magnetic release mechanism and complies with IEC/EN 60898-1 standards. It is DIN rail mountable, supports top or bottom wiring, and offers IP20 protection. Commonly used in commercial, industrial, and infrastructure environments.
TECHNICAL DETAILS:
| Category | Specification |
| Model | YCB7-63N |
| Rated Current | 20A |
| Number of Poles | 3P |
| Tripping Curve | Type C |
| Rated Voltage | 400V AC |
| Rated Frequency | 50/60Hz |
| Breaking Capacity | 6kA |
| Insulation Voltage | 500V |
| Impulse Withstand Voltage | 4kV |
| Tripping Type | Thermal magnetic |
| Standard Compliance | IEC/EN 60898-1 |
| Use Category | II, III |
| Pollution Degree | 2 |
| Mechanical Life | 20,000 operations |
| Electrical Life | 10,000 operations |
| Protection Degree | IP20 |
| Ambient Temperature | –5°C to +40°C |
| Humidity Resistance | ≤50% at +40°C |
| Max Installation Height | ≤2000m |
| Mounting | DIN rail EN 60715 |
| Max Wire Size | 25 mm² / AWG 18–3 |
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