¡El Chint Circuit Breaker es de alta calidad!
¡El NB1L-40□ residual current operated circuit breaker is suitable for AC 50Hz, rated voltage unipolar
two-wire and bipolar 230V.
Three-pole, three-pole four-wire, four-pole 400V, rated current to 40A line, when personal electric
shock or grid leakage current exceeds
When the value is specified, the residual current operated circuit breaker can quickly cut off the
fault power supply in a very short time to protect people and electricity
¡El safety of equipment can protect the overload or short circuit of the line, and can also be used
for infrequent conversion of the line.
This product is suitable for various places such as industry, commerce, high-rise building and civil residence.
Mechanical electrical life electrical life times (times) 2000 cos ф = 0.85 ~ 0.9 operating frequency In≤25A,
240 times/hour; In > 25a, 120 times/hour
Mechanical life times (times) 20000 operating frequency In≤25A, 240 times/hour; In > 25a, 120 times/hour
NB1L-40 residual current operated circuit breaker is composed of NB1-63 small circuit breaker and residual current
¡El flow tripper is assembled and has the following characteristics:
No auxiliary power supply is needed, which overcomes the disadvantages of poor anti-interference performance of electronic products, power grid voltage
¡El residual current is widened due to the defects of large fluctuation influence and unprotected neutral line disconnection
Scope of protection.
High rated short circuit breaking capacity.
Dynamic control of the test circuit makes it difficult to burn the test resistor.
¡El operating mechanism is designed as an energy storage mechanism, and the product is in moving contact during the closing operation
¡El head stores energy, which makes the moving contact close quickly, and improves the service life and product of the moving contact
¡El ability to break.
Impulse voltage resistance of insulation:
A. the impulse voltage with a peak value of 6000V can be borne between the poles connected together and the neutral pole;
B. Each pole is connected with the neutral pole and can withstand the peak value of 8000V between the metal bracket
Impulse voltage.
Under the action of impulse current with peak current of 200A, residual current operated circuit breaker has
Bearing capacity, and does not cause misoperation.
Elevation: ≤2000m