The  NB163DC-4PC63 is a 4-pole DC miniature circuit breaker engineered for safe and efficient protection of direct current systems. Rated at 63A with a maximum operating voltage of 1000VDC, it is suitable for demanding environments such as photovoltaic (PV) installations and energy storage systems.

The CHINT NB1-63DC DC Circuit Breaker provides dependable overload and short-circuit protection for DC systems up to 1000 V and 63 A. Compact and efficient, it is ideal for photovoltaic, energy storage, and communication power applications. With 6 kA breaking capacity and C-curve tripping characteristics, the NB1-63DC ensures fast, stable protection. Built to IEC/EN 60947-2 and RoHS standards, it features dual connection capability for cables or busbars, a long mechanical life, and easy DIN-rail installation.

Technical Specification: 

• Standards & Certifications: IEC/EN 60947-2 | RoHS 
• Rated Voltage (Ue): DC 1000 V 
• Rated Current (In): 63 A
• Poles: 4P
• Tripping Curve: Type C (7–10 × In)
• Rated Short-Circuit Breaking Capacity (Icu): 6 kA
• Connection Options: Lead wire and busbar compatible (dual connection)
• Installation: DIN rail mounting, plug-in structure
• Power Consumption (per pole): up to 16 W (at In ≤ 63 A)
• Dimensions (mm): Height: 86, Depth: 78, Width: 72 mm

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