NXA Series ACB CHINT Circuit Breaker Low Voltage Parts
Universal type circuit breaker, also known as frame type circuit breaker, is a mechanical switch that can make, carry and break current under normal circuit conditions, and can also make and carry a certain time and breaking current under specified abnormal circuit conditions. Electrical appliances. Universal circuit breakers are used to distribute electrical energy and protect circuits and power equipment from overloads, under-voltages, short circuits, etc.
This type of circuit breaker generally has a steel frame, and all parts are installed in the frame. It has a large capacity, can be installed with multiple functions of tripping devices and more auxiliary contacts, has a higher segmentation capacity and thermal stability, so it is often used in places requiring high breaking capacity and selective protection.
Intelligent universal circuit breakers are suitable for AC 50Hz, rated voltages of 380V, 660V, and rated currents of 200A-6300A in the distribution network. They are mainly used to distribute electrical energy and protect lines and power equipment from overload, undervoltage, short circuit, single-phase The circuit breaker has a variety of intelligent protection functions, which can achieve selective protection, accurate action, avoid unnecessary power outages, and improve power supply reliability. Under normal conditions, it can be used for infrequent switching of lines. The circuit breaker below 1250A can be used to protect the motor from overload and short circuit in the AC 50Hz voltage 380V network. Under normal conditions, it can also be used for infrequent starting of the motor.
Frame size (A): 1600, 2000, 3200, 4000
Breaking capacity: N,S,H
Rated voltage Ue (VAC): 380/400/415
Number of poles: 3P, 4P
Installation method: draw-out type, fixed type
Wiring type: horizontal rear connection
Operation conditions and environment adaptability
The electrical and mechanical characteristics are applicable to the ambient temperature
of -5℃-+40℃. NXA can also operate in the ambient temperature of -45℃-+70℃ (M type,
A type), -20℃-+70℃ (P type, H type, CD-1), the derating factor is seen in P21-22.
Storage conditions: apply to -45℃-70℃
NXA can resist the following electromagnetic interference
— Overvoltage generated by electromagnetic interference
— Overvoltage caused by environment interference or a power distributing system
— Electrostatic discharge of radio waves (radio, intercom, radar and the like)
The NXA circuit breaker has successfully passed the test for electromagnetic compatibility
specified according to the following standards (EMC) IEC/EN 60947-2
The test can guarantee no false tripping and no interference on tripping time
Front IP 20, other side IP 00
M type (basic type)
asic function: Current measurement and display,protective function L S I&G
A type (current type)
— Comprising all protective functions of M type
— Unbalanced current protection
P type (power type)
— Basic function, protective function: L, S, I&G
— Power measurement functions of current, voltage, power etc.
— LCD display
H type (harmonic type)
— Comprising all protection and measurement functions of P type
— Harmonic measurement and analysis
— Communication function