NDB2-63H (15kA) Molded Case Circuit Breaker

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Updated：July 17,2026 17:35PM

The NDB2-63H (15kA) molded case circuit breaker is a high breaking capacity circuit breaker. It provides short-circuit overload and isolation protection functions and is mainly used in workplaces (such as data centers) with AC 50/60Hz rated voltage of AC230/400V rated current not exceeding 63A and rated ultimate short-circuit breaking capacity of 15kA.
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Features of NDB2-63H (15kA) Series

Fast closing: ensures reliable operation of impact loads and extends circuit breaker service life.
The product structure provides short-circuit current limiting capability, improving short-circuit breaking performance.
Frame-type wiring structure: reliable wiring connection.
Compatible with various accessories: convenient function expansion.
Modular design: flexible combination.

Technology data of NDB2-63H (15kA) Series

Parameter Model	NDB2-63H
Rated voltage (V)	AC230 (1P) AC400 (2/3/4P)
Rated insulation voltage (V)	AC500
Rated impulse withstand voltage (kV)	4
Rated current (A)	1, 2, 3, 4, 6, 10, 16, 20, 25, 32, 40, 50, 63
Rated short-circuit breaking capacity (kA)	/
Rated ultimate short-circuit breaking capacity (kA)	15
Rated service short-circuit breaking capacity (kA)	7.5
Instantaneous tripping characteristic (In)	8 (1±20%) 12 (1±20%)
Operating performance (operations) - Mechanical life	20,000
Operating performance (operations) - Electrical life	10,000
Standards	GB/T 14048.2 IEC 60947-2

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