NXA Series ACB CHINT Circuit Breaker Low Voltage Parts
AIRCircuit breaker
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.
Features
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
operational
Operation conditions and environment adaptability
Operation temperature:
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
Annex F
The test can guarantee no false tripping and no interference on
tripping time
Protection grade:
Front IP 20, other side IP 00
Intelligent controller
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