NBG-63 Miniature circuit breaker Datasheet & Manual

NBG-63 Miniature circuit breaker

The NBG-63 Miniature Circuit Breaker (MCB) provides reliable protection against overloads and short circuits in residential, commercial, and industrial power distribution systems. Designed for AC 230/400V circuits and compliant with IEC/EN 60898-1, it ensures high operational safety with positive isolation and stable performance. Available in B, C, and D tripping curves, the NBG-63 offers versatility for different load types and guarantees long mechanical and electrical endurance.

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FAQs

What does the NBG-63 Miniature Circuit Breaker protect against?

It protects electrical circuits from overload and short-circuit faults, preventing damage to wiring and equipment.

What are the available tripping curve options?

The NBG-63 is available in B, C, and D curves — B for resistive loads (e.g., lighting), C for mixed or inductive loads (e.g., motors), and D for heavy inductive or high inrush current applications.

What is the rated short-circuit breaking capacity of the NBG-63?

It features a breaking capacity of 6kA, ensuring dependable performance in low-voltage systems.

In what applications can the NBG-63 be used?

The breaker is ideal for residential, commercial, and industrial distribution boards and control systems, providing safe and efficient protection for various load types

How long does the NBG-63 last?

It’s designed for 20,000 mechanical and 10,000 electrical operations, guaranteeing long-term reliability in demanding environments.

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NBG-63 Miniature circuit breaker

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