NDB2Z-63 Series DC Miniature Circuit Breaker MCB

The NDB2Z series circuit breakers are applicable to low-voltage terminal power distribution in such fields as industry, civil construction, energy, photovoltaic system, communication and infrastructure.

Description

NDB2ZB Series DC MCB, with three-stage current protection of over-load long time delay, short circuit short time delay and short circuit instant tripping, is developed specifically for DC power system in power distribution projects. Combining with inferior circuit breakers to achieve the integral selective protection, it can enable the short circuit breakdown protection in the meantime effectively avoid malfunction of superior circuit breakers caused by the inferior short circuit so as to guarantee the system safety and stability.

Rated working voltage: DC250V( two poles in series )
Rated impulse withstand voltage Uimp: 4kV
Rated current In: 16A,20A,25A,32A,40A
Rated ultimate breaking capacity Icu: 10kA
Rated operating short-circuit breaking capacity Ics: 10kA
Short-time short circuit tripping time: 10ms±10%

Features

Quick closing: To ensure the reliable operation of the impact load and extend the life of the circuit breaker.
The product structure can limit the short circuit, thus improving the short circuit breaking capacity.
The product structure can limit the short circuit,:thus improving the short circuit breaking capacity.
Support a variety of accessories: Easy to expand the functions.
Modular: Any combination.

NDB2Z series of circuit breaker has obtained China Compulsory Certification (CCC) for products.

Technology data