YCW8-HU Air circuit breaker

Product Detail

General

YCW8HUseries air circuit breaker(hereinafter called ACB) is suitable for the circuit of AC 50Hz/60Hz with rated service voltage

800V, 1140V and rated service current between 630A and 4000A. It is mainly used to distribute electric energy and protect

circuits and electric equipment against over-load, under-voltage, short-circuit and single-phase earthing fault.

With intelligent and selective protection functions, the breaker can improve the reliability of power supply, and avoid unnecessary power failure.

The breaker is applicable for power stations, factories.

Standard: IEC 60947-2,IEC 60947-4-1

Type designation

YCW8

product name

4000

Shell

framecurrent

Breaking Capacity

number of poles

2500A

Rated current

Installation type

Connection

controller type

YCW8

2500(630~2500A) 4000(2000~4000A)

HU ： AC800 /1140V

3:3P 4:4P

630

800

1000

1250

1600

2000

2500

2900

3200

3600

3900

4000

D: Drawer style

F: Fixed

H: Horizontal wiring

V: Vertical wiring

M: LED display

3M: LCD display

3H: LCD display with communication

Operating conditions

Item	Description
Ambient temperature	-5℃~+40℃;the average value within 24h shall not exceed +35℃; L type and M type controller can be used under -40℃~+70℃
Altitude	≤2000m
Pollution grade	3
Safety category	Main circuit and undervoltage tripping coil is IV, other auxiliary and control circuit is III
Installation position	Vertically installed, inclination between the mounting plane and the vertical plane should not exceed ±5°

Technical data

Item		Description
Shell current Inm (A)		2500	4000
Rated working current In (A)		630,800,1000 1250,1600,2000,2500	2000, 2500, 2900, 3200, 3600, 3900, 4000
Rated working voltage Ue (V)		800/1140
Rated insulation voltage Ui (V)		1140
Rated impulse withstand voltage Uimp (KV)		12
Power frequency withstand voltage (V) for 1 minute		3500
Number of poles		3P,4P
Rated limit short breaking capacity Icu (KA)	800/1140V	50	50
Rated operating short-circuit breaking capacity Ics (KA)	800/1140V	50	50
Rated short time withstand current for 1s ICW (KA)	800/1140V	50	50
Full power interruption time (without additional delay) (ms)		12~18
Closing time (ms)		≤60
Electrical lifespan		2000
Mechanical life (maintenance free)		10000
Mechanical life (with maintenance)		20000

Basic and optional functions of the controller

Basic function	Optional function
Overload long delay, short circuit short delay, and short circuit instantaneous protection	Signal contact output
Functional testing	MCR and over limit tripping
Fault memory	Load monitoring
Thermal memory	Voltage measurement
Self diagnosis
Current measurement
Fault status indication and numerical display
Earth fault protection

Basic function	Optional function
Overload long delay, short circuit short delay, and short circuit instantaneous protection	Current imbalance protection
Functional testing	Signal contact output
Fault memory	MCR and over limit tripping
Thermal memory	Load monitoring
Self diagnosis	power measurement
Current measurement	Power factor measurement
Fault status indication and numerical display	Electric energy measurement
Communication function (3H)	Regional interlocking
Contact wear indicator (3H)	Harmonic measurement
Operation fault protection record (3H)	Voltage protection
Earth fault protection	Voltage measurement

Controller model	M	3M	3H
Overload long delay protection
Short circuit short time delay protection
Short circuit instantaneous protection
Earth fault protection
Current imbalance protection
Functional testing
Fault memory
Signal contact output
Thermal memory
Self diagnosis
MCU working instructions
Current column display
Current measurement
MCR and over limit tripping
Load monitoring
Fault status indication and numerical display
Voltage measurement
Power factor measurement
power measurement
Electric energy measurement
Communication function
Contact wear indication
Regional interlocking
Harmonic measurement
Voltage protection
Record of operation times