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NDB1 Series Miniature Circuit Breaker
By:Nader Updated:February 14,2020 21:28PM

Description

Application
●Protection against short circuit
●Protection against overload
●Control
●Isolation
NDB1 Series include: NDB1-32 Series, NDB1-40 Series, NDB1-63 Series, NDB1-125 Series.
NDB1-32 series MCB is used in low voltage electrical distribution system in industry, business, power, and telecom and construction field.
NDB1-40 dedicated to the low voltage power distribution system of industrial, buildings, energy, communications and infrastructure.  The MCB can cut off phase and neutral lines at the same time, whereas the neutral line should not provide protection.
NDB1-63 dedicated to the low voltage power distribution system of industrial, buildings, energy communications and infrastructure.
NDB1-125 series is used in low voltage electrical distribution system in industry, real estate, power, telecom, construction field, etc.

Electrical parameters

NDB1-32 Series  
○ Rated working voltage (Ue): AC230V
○ Rated current (In): 6A、10A、16A、20A、25A、32A
○ Breaking capacity (Icn): 4.5kA
○ Impulse voltage endurance: 4kV
NDB1-40 Series
○Rated working Voltage: AC230V/240V
○Rated Frequency: 50/60Hz
○Rated Current:2A, 4A, 6A, 10A, 16A, 20A, 25A, 32A, 40A
○Rated Breaking Capacity: 6kA
○Impulse Withstand Voltage: 4kV
○Instantaneous Tripping Characteristic: B, C, D
NDB1-63 Series

○Number of Poles:  1P, 1P+N, 2P, 3P, 3P+N, 4P 
○Rated working Voltage: AC230/240/400/415V(1P);AC230/240V(1P+N);AC400/415V(2P,3P,3P+N,4P);
DC60/80V(1P,2P) 
○Rated Current: 1A,2A,3A,4A,5A,6A, 10A, 16A,20A,25A,32A,40A,50A,63A 
○Rated Insulation Voltage: 500V 
○Rated Frequency:  50/60Hz 
○Rated Impulse Withstand Voltage: 4kV 
○Breaking Capacity: 6kA 
○Instantaneous Tripping Characteristic: B、C、D
NDB1-125 Series
○ Rated voltage (Ue): AC230/240V(1P ); AC400/415V(2P;3P;4P);
○ Rated current (In): 50A, 63A, 80A, 100A, 125A
○ Rated breaking capacity (Icn): 10kA
○ Impulse voltage endurance: 6kV

Features

◆ For normal opening or fault protection tripping of the circuit breaker, the phase line and neutral line are both in the off state to avoid harm caused due to the charged neutral line faults
◆ During the connecting and breaking operation, first connect and then break the neutral line to realize the full protection functions with overload and short circuit protection units.
◆ With the "Frame" wiring structure, realize the convenient and reliable wiring
◆ The TH35mm standard installation rail is supported - convenient and simple installation
 

Certification

NDB1 series of circuit breaker has obtained China Compulsory Certification (CCC), CB, RoHS for products.

Datasheet download