The CHINT NB1-63H Miniature Circuit Breaker (MCB) provides dependable protection against overload and short-circuit faults in AC circuits up to 415 V. Engineered for residential, commercial, and industrial applications, it features a 10 kA breaking capacity, thermomagnetic trip, and compliance with IEC/EN 60898-1 standards. This MCB is a B-curve (Type B) circuit breaker trips when current reaches about 3–5 times its rated value, making it quick to respond to faults. It’s commonly used in residential and light commercial circuits like lighting and general outlets, where there are low startup surges. The 10kA rating means it can safely interrupt fault currents up to 10,000 amps, making it suitable for residential and light commercial applications.

Technical Specification: 

• Rated Voltage (Ue): AC 240/415 V
• Rated Current (In): 50 A 
• Tripping Characteristics: Type B (3–5 In) protection for people and big length cables in TN and IT systems. 
• Rated Frequency: 50/60 Hz
• Terminal Type: Cable / U-type busbar / Pin-type busbar
• Terminal Capacity: Up to 25 mm²
• Mounting: DIN-rail EN 60715 (35 mm)
• Connection: Top or bottom feed
• Auxiliary Accessories: Auxiliary contact, Shunt release 230-400VAC, Shunt release 12VAC/DC, Shunt release 24VAC/DC, Under-voltage release, Alarm contact

Download Datasheet