NXB-125A 3P Chint MCB
Key Specifications

• Poles: 3P (3-Pole for three-phase AC circuits) 
• Rated Current: 63A, 80A, 100A, or 125A option
• Rated Operational Voltage: 400V AC (2P–4P systems)
• Frequency: 50/60 Hz 
• Tripping Curves: C curve (thermal-magnetic release at 8In) or D curve (12In) 
• Rated Short-Circuit Breaking Capacity (\(I_{cu}\)): 10 kA 
• Service Breaking Capacity (\(I_{cs}\)): 7.5 kA 
• Rated Impulse Withstand Voltage (\(U_{imp}\)): 4 kV 
• Compliance Standards: IEC/EN 60947-2 

Core Functions

• Overload & Short-Circuit Protection: Automatically disconnects current when faults or dangerous overloads occur.
• Positive Isolation: Clear indication of contact status for safe maintenance.
• Mechanical & Electrical Life: Rated for 20,000 mechanical cycles and 4,000 to 6,000 electrical cycles. 

If you'd like, let me know:

• What amperage rating (63A, 80A, 100A, or 125A) you need
• Whether you are looking for pricing or local availability in your area

I can help you find more specific details.