CNC YCB7-63N 4 Pole MCB 20A, 32A, 40A, 63A AC Miniature Circuit Breaker 400V 6kA C Curve

CNC YCB7-63N 4 Pole AC MCB: 3 Phase + Neutral Protection

The CNC Electric YCB7-63N 4 Pole MCB protects 3-phase circuits from overload and short circuits. When a fault happens, all four poles (L1, L2, L3 and Neutral) trip together through the joined handle, so the circuit is completely isolated. It's a good fit for 3-phase home supplies, commercial buildings, industrial panels, and the AC side of 3-phase solar inverters.

Key Features

• Model: YCB7-63N
• Poles: 4 Pole (3P+N)
• Current Options: 20A / 32A / 40A / 63A
• Rated Voltage: 400V~ AC, 50/60Hz
• Breaking Capacity: 6000A (6kA)
• Tripping Curve: C curve, for general, mixed, and motor loads
• Standard: IEC 60898-1, CE marked
• Contact position indicator: a green window on each pole
• Joined red handle: all four poles switch together
• Mounting: standard 35mm DIN rail with red release clips

Applications

• 3-phase main incoming protection in homes and plazas
• Commercial and industrial distribution boards
• Motors, pumps, and HVAC systems
• 3-phase solar inverter AC output protection

Choosing the Right Rating

• 20A / 32A: sub-circuits and small 3-phase loads
• 40A: medium homes and commercial units
• 63A: main incoming breaker and heavy loads

Need help choosing? Contact Golden Sun Solar for expert guidance.