Air Circuit Breaker

Meba Air Circuit Breakers MBVL-250

Meba Air Circuit Breakers MBVL-250

1. MBVL series MCCB is one of new products developed and manufactured by adopting international advanced technology.

2. It is supplied with rated insutaling voltage 690V and used for circuit of AC 50/60Hz, rated operating voltage AC 415V or below, rated opereating current from 16A to250A.

3. It is designed for protection of electric circuit, motors, transformers and other equipments.

4. The products conforms to IEC60947-2 standard.

Type MBVL-160X MBVL-160 MBVL-250 MBVL-400 MBVL-630
Poles number 3 3 3 3 3
Rated current In(A) 20~160A 50~160A 100~250A 200~400A 315~400A
Rated operating voltage Ue(V) AC 50/60Hz 690 690 690 690 690
Rated insulation voltage Ui(V) 800 800 800 800 800
Rated impulse withstand voltage Uimp(KV) 8 8 8 8 8
Utilisation category A A A A A
Rated ultimate short-circuit breaking capacityIcu(KA) AC 220/240V 65 65 65 65 65
AC 380/415V 40 40 40 40 40
AC 690V 8 12 12 12 12
Rated short-circuit servicebreaking capacityIcs(KA) AC 220/240V 65 65 65 65 65
AC 380/415V 40 40 40 40 40
AC 690V 4 6 6 6 6




MBVL-160X MBVL-160 MBVL-250
In T adjustable
In T adjustable
M adjustable In T adjustable
M adjustable
20A 16~20A 300A 50A 40~50A 300~600A 200A 160~200A 1000~2000A
32A 25~32A 300A 63A 50~63A 300~600A 250A 200~250A 1200~2500A
40A 32~40A 600A 80A 63~80A 400~800A


MBVL-400 MBVL-630
In T adjustable(0.8~1.0In) M adjustable In T adjustable(0.8~1.0In) M adjustable
200A 160~200A 1000~2000A 315A 250~315A 1575~3150A
250A 200~250A 1200~2500A 400A 315~400A 2000~4000A
315A 250~315A 1575~3150A 500A 400~500A 2500~5000A
400A 315~400A 2000~4000A 630A 500~630A 3250~6500A



MBVL-250 Dimension

Meba Air Circuit Breakers MBVL-250 is delevop moulded case circuit breaker used to distribute electric energy in distribution network, overload or short circuit protection power equipment and transformation of infrequent circuit under the normal conditions.

Air Circuit Breaker

Meba Air Circuit Breakers KW 400S

·Brief description
1. Compared with traditional circuit breaker or relevant fuse,MEBA C series circuit breaker has excellent protection performance in smaller space, in maximum range can satisfy rated current and faulty current’s requirement.
2. C series  circuit breaker  can  be used in cascade system,  meet next stage circuit breaker’s limit section capacity select protection req-uirement, save whole system cost.
C series circuit breaker complies with IECZ60947-2 international standard;  also comply with main industrial countries standard.

1. C series  circuit  breaker  including 7 basic frames, frame current from  100  to  2500A.  Each  frame  has up to  415V 100KA (AC240V 200KA)short circuit breaking capacity multiple choice, more flexibility in design, and save space as well.
2. Actually, using  C series  circuit breaker  can  avoid  in  re-design system.  It  can be used in original  switchboard,  feeder ark, bus duct, equipment control panel,  motor  control  center  substitute of old type circuit  breaker.  At  most situations,  can  adopt  same Connector bar, terminal and shaft structure.
3. Circuit  breaker  stan dard  temperature  is  40  degree,  for other higher  ambient  temperature  situation,  can  use  50  degree  factory finalize type design circuit breaker.
4. C series circuit breaker can be used in DC situation as well, 630A frame  3P  circuit breaker   concatenation  used  in  DC600V  breaking capacity can reach 40KA.

·Most reasonable contact terminal system design
C series circuit breaker flexible and special specific is adopt one of the most reasonable design in circuit breaker history, can assure circuit breaker in high fault current fast and reliable breaking.

·Whole testing process in factory
Each C series circuit breaker steady and reliable quality is acc-ording to a whole testing procedure assurance, each circuit breaker’s same pole has to make two times setting test to verify trip,  operating characteristic and electric circuit contentiously.

·High breaking capacity in smaller space
C circuit breaker in shape and electric function can be interchan-ged with Westinghouse moulded case circuit breaker, this means C series circuit breaker is ideal product after  improve its equipment design.

·Operation structure
1.C  series  circuit breaker adopt in fast-separate  and  fast-close mechanical  operation,  which has free trip function,  assure  circuit breaker in short circuit time can not keep closed.
2. Circuit  breaker’s  trip shaft’s  position and two sides’  windows point its working condition:  ‘witch-on’, ‘reak- brake’ and ‘rip’ If circuit breaker overloading,  short circuit, shunt  or  under voltage or press TEST button makes trip, shaft will slip to ‘rip’ position. At mean while if need  circuit  breaker re-switch on,  it should switch shaft to reset position then break brake.

·Current limit feature
   C series circuit breaker adopts high repulsion contact terminal structure and advantage ARC technology, so it has significant currentlimit function.

  IEC60947-1:General rule
IEC60947-2:Circuit breaker
IEC60947-3:Switch, isolating switch, load switch etc.

C Series Trip unit type work

GWF 125S Parameter

Working condition:
1.The altitude not exceeding 2000m
2.The ambient temperature is from +40°Cto -5°C
3.Ambient environment is free from explosive danger and air or dust, which may cause corrosion of metal or weakness of insulation.
4.Ambient environment is free from erosion of rain or snow.
5.Pollution degree 3
6.Over-voltage category III

C series MCCB Structure

 [Download not found]Meba Air Circuit Breakers KW 400S is big ampere circuit breaker  with high breaking capacity match with RCCB, MCB  use  to protection power distribution equipment safety.