NB1H-63 2P C2 10kA double busbar

Chint NB1 Miniature Circuit Breakers (MCBs) are designed for reliable circuit protection in Chint consumer units and distribution boards. These compact devices are also DIN rail mountable, allowing for standalone use in various electrical installations.

Key Features:
– Functionality: Provides circuit protection against short circuits and overloads, as well as switching and isolation.
– Application: Suitable for residential, commercial, and industrial electrical distribution systems.
– Variety: Available in multiple pole configurations, current ratings, and tripping curves to meet different protection needs.

Selection Criteria:
When choosing an NB1-63H circuit breaker, consider:
– **Short-circuit current** at the installation point (must be lower than the breaking capacity of the MCB).
– **Network voltage** at the installation point.

Tripping Curves:
– B Curve (3-5In): Ideal for protecting people and long cable runs in TN and IT systems.
– C Curve (5-10In): Suitable for resistive and inductive loads with low inrush current.
– D Curve (10-14In): Designed for circuits supplying high inrush current loads, such as LV/LV transformers and discharge lamps.

With their versatility and reliability, Chint NB1 MCBs provide an effective solution for power distribution and circuit protection in a wide range of applications.