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Product NameYM3 Series MCCB
APPLICATION
   YM3 series moulded case circuit breakers (hereinafter referred to as MCCBS) are the new series MCCBS developed to international standards.
     The MCCBS having rated insulation voltage 400V (Inm 160A ) to 690A (Inm 250A ) are designed to be used for distribution network having rated current 10A to 1600A ,rated operational voltage 380/400V to 660/690V,intended for power distribution, protection of electrical equipment and circuits against overload, short-circuit and under voltage, and also for unfrequent switching of electric circuit under normal conditions.
     The MCCBS with frame rating up to and including 400A can be used for unfrequent starting, and interruption of squirrel cage motors, and for protection of motors against overload, short-circuit and undervoltage.
     YM3 series circuit breakers can be equipped with electrical accessories and mechanical accessories, such as under voltage release, shunt release, auxiliary contacts, alarm contacts, electric operating mechanism and rotary mechanical operating handle etc.
    HM3 series residual current operating circuit breakers other than above mentioned functions are designed available also for protection of person and equipment not only against electric shock, but also against risks of fires originated by insulation failures of equipment.
Type and meaning
 
With high short-circuit breaking capacity

1 B-Basic type, General breaking capacity
2 N-Normal type, Normal breaking capacity
3 S-Standard type, Standard breaking capacity
4 H-Higher breaking type, Higher breaking capacity
5 G-The highest breaking type, The highest breaking capacity

Wiring typeand mounting structure

Frame rating Inm(A)
Wring and Mounting
Fixed version
Plug-in version
Draw-out version
Front terminal
Rear terminals
Extended front terminals
Front terminals
Screw
Front terminal
Rear terminals
Screw
Horizonta
Vertical
Screw
Horizonta
Vertica
63A
       
125A  
160A  
250A    
400A    
630A      
800A      
1250A
     
1600A
 
In compliance with international and national standards
     HM3 series circuit breakers are designed in accordance with advanced international and national standards and in compliance with following standards: IEC60947-2.
Operation
Rated current of frame size Inm(A) Handle Motor operation Rotary handle operation
63A
125A
160A
250A
400A
630A
800A
1250A
1600A
Smart

Fixed version

HM3 series circuit breakers (Inm 250A ) are equipped with solid-state release with advanced PC technology, having intelligent protective functions and communication interface, available.

HM3 series circuit breakers are available for various installations.
1 Fixed version 2 Plug-in version 3 Draw-out versio
Technical parameter
HM3 series MCCB

 

 

 

 

The break class B N S B N S
Rated current of frame size Inm 63 125
Rated current In 10 12.5 16 20 25 32 40 50 63 12.5 16 20 25 32 40 50 63 80 100 125
Rated insulation voltage Ui 400V 400V
Rated operating voltage Ue 400V 400V
Number of poles 3/4 3/4
Rated current of the N pole =In =In
Rated unltimate short-circuit breaking capacity 20 35 50 25 35 50
Rated service short-circuit breaking capacity 10 17.5 37.5 10 17.5 37.5
Rated short-circuit making capacity 40/0.3 135/0.25 105/0.75 10/0.3 73.5/0.25 105/0.25
Rated short-time withstand current    
Rated impulse withstand voltage 6000 6000
Dielectric property 2500 2500
Endur_ ance Total cycles 10000 10000
Electrical endurance 1500 1500
Mechanical endurance 8500 8500
lonization distance 30/ 0* 30/ 0*
Over curent tyip unit Thermal magnetic release
lntel ligent trip unit    
   
Utiliza_ tion category Main circuit A A
Auxiliary circuit AC-15 AC-15


 


 

 

 

 

 

 

 

 

 

 

 

YM3 series MCCB

the break class B N S H N S H G
Rated current of frame size Inm 160 250
Rated current 16 20 25 32 40 50 63 80 100 125 160 125 160 180 200 225 250
Rated operating voltage 690V 690V
Rated operating voltage 400V 400V
Number of poles 3/4 3/4
Rated current of the N pole =In =In
Rated unltimate short-circuit breaking capacity 20 35 50 65 35 50 65 85
Rated service short-circuit breaking capacity 10 37.5 37.5 48.75 35 37.5 48.75 51
Rated short-circuit making capacity 400/0.3 73.5/0.25 110/0.25 143/0.2 77/0.25 114/0.25 143/0.2 1787/0.2
Rated short-time withstand current    
Rated impulse withstand voltage 8000 8000
Dielectric property 3000 3000
Endurance Total cycles 8000 8000
Electrical endurance 1000 1000
Mechanical endurance 7000 7000
lonization distance 30/ 0* 30/ 0*
Over current trip unit Thermal magnetic release
Intel ligent trip unit    
   
Utilization category Main circuit A A
Auxiliary circuit AC-15 AC-15
 
YM3 series MCCB
the break class
B
N
H
G
N
S
H
G
Rated current of frame size Inm
400
(630) 800
Rated current
250 310 (350) 400
400 500 630 (700) 800
Rated insulation voltage
690V
690V
Rated operating voltage
400V
400V
Number of poles
3/4
3/4
Rated current of the N pole
=In
=In
Rated unltimate short-circuit breaking capacity
35
50
70
85
35
50
70
85
Rated service short-circuit breaking capacity
35
37.5
42
51
35
37.5
42
51
Rated short-circuit making capacity
77/0.25
11./0.25
154/0.25
187/0.2
77/0.25
114/0.25
143/0.2
1787/0.2
Rated short-time withstand current
5
10
Rated impulse withstand voltage
8000
8000
Dielectric property
3000
3000
Endurance
Total cycles
5000
5000
Electrical endurance
1000
1000
Mechanical endurance
400
4000
lonization distance
60/ 0*
80/ 0*
Over current trip unit
Thermal magnetic release
Intel ligent trip unit
Utilization category
Main circuit
B
B
Auxiliary circuit
AC-15
AC-15

YM3 series MCCB
the break class
B
H
G
Rated current of frame size Inm
(1250)1600
Rated current
800 1000 1250 1600
Rated insulation voltage
690V
Rated operating voltage
400V
Number of poles
3/4
Rated current of the N pole
=In
Rated unltimate short-circuit breaking capacity
50
65 100
Rated service short-circuit making capacity
50 48.75 50
Rated short-circuit making capacity
105/0.25 143/0.2 220/0.2
Rated short-time withstand current
20
Rated impulse withstand voltage
8000
Dielectric property
3000
Endurance
Total cycles
3000
Electrical endurance
500
Mechanical endurance
2500
lonization distance
80/ 0*
Over current trip unit
Thermal magnetic release
Intel ligent trip unit
Utilization category
Main circuit
B
Auxiliary circuit
AC-15