Categories
Miniature Circuit Breaker

Main switch MBI31 125 made by Meba

Meba main switch MBI31 125 

Protection and control of circuits against overloads and short-circuits  in lighting distribution system industry, commerce and dwelling, and  electric motors.Meba main switch MBI31 125  are also used in turning on or off the electric apparatus and lighting circuit under the normal condition.

Feature: protective grade(up to IP20), high breaking capacity, reliable sensitive action, convenient, multiple assembling, long life etc.

Meba main switch MBI31 125

Technical parameters:

  • Pole No: 1,2,3,4
  • Rated current(A): 16,25,40,63,80,100,125A
  • Rated voltage: 230/400V AC
  • Rated frequency: 50/60Hz
  • Rated short-circuit making capacity: 3000A
  • Rated withstand current: 1500A within 1sec
  • Electro-mechanical endurance: 10000 cycles
  • Connection capacity: Rigid conductor 35mm

 

Rated impulse withstand voltage(1.2/50)Uim 4000V
Rated short-time withstand current  lcw 12le,1s
Rated short circuit making capacity 20le,t=0.1s
Dielectric test voltage at ind.Freq.for 1 min 2.5KV
Insulation voltage Ui 500V
Electrical life 1500t
Mechanicai life 8500t
Protection degree IP20
Ambient temperature(with daily average≤35°c) -5~+40°c
Categories
Miniature Circuit Breaker

Main circuit breaker MBI32-100 made by Meba

Meba main circuit breaker MBI32-100

1.1 Function
protection of circuits against short-circuit currents,
protection of circuits against overload currents,
switch,
isolation,
MB132-100 circuit-breakers are used in domestic installation,
as well as in commercial and industry electrical
distribution systems.

1.2 Feature
high protective grade(up to IP20), high breaking capacity,
reliable sensitive action, convenient, long life etc.

1.3 Selection
Technical data of the network at the point considered:
the earthing systems (TNS, TNC),
short-circuit current at the circuit-breaker installation point,
which must always be less than the breaking capacity of this device,
Network normal voltage.

Tripping curves:
B curve (3-5In)  protection for people and big length cables in TN and IT systems.
C curve (5-10In)  protection for resistive and inductive loads with low inrush current.
D curve(10-14In)  protection for circuits which supply loads with high inrush current
at the circuit closing (LV/LV transformers, breakdown lamps).

1.4 Approvals and certificates
Detailed information, please refer to Certificates Table
on the last page.

Meba main circuit breaker MBI32-100

Technical parameters:

 

Rated impulse withstand voltage(1.2/50)Uim 4000V
Rated short-time withstand current  lcw 12le,1s
Rated short circuit making capacity 20le,t=0.1s
Dielectric test voltage at ind.Freq.for 1 min 2.5KV
Insulation voltage Ui 500V
Electrical life 1500t
Mechanicai life 8500t
Protection degree IP20
Ambient temperature(with daily average≤35°c) -5~+40°c

 

Teminal size top/bottom for cable and pin-type busbar 35mm²18-1/0 AWG
Categories
Miniature Circuit Breaker

Meba breakers MBI236C

Meba breakers MBI236C , this mini circuit breaker is mainly suitable for overload and short circuit protection. It is especially used for illumination and distribution in industry and commerce.It is of pleasing outlook & high breaking capacity etc.The frame and parts adopt plastics of light weight, reliable performance, high inflammable resistance and shock resistance for long service life. It is mainly used for overload and short circuit protection within the circuit of AC 50/60Hz,rated voltage of single pole up to 230V, two, three or four pole up to 400V. It can also be used for an un-frequent switch over of the circuit and illumination under normal condition.

Meba breakers MBI236C

Technical parameters:

Rated current(A) Pole Rated voltage (V) Breaking capacity (A) Electrical life(times) Mechanical life (times)
1,2,3,4,6,10,16,20,25,32,40,50,63 1,2,3,4 1P+N 240/415 6000 8000 10000

 

Some items for your reference when selecting the device:

a)The earthing systems(TNS,TNC)

b)Short-circuit of the specific power system, which must always be less than the breaking capacity of this device

c)The rated voltage

d)Tripping curves:

  • B curve (3-5In) —- protection for people and big length cables in TN and IT systems (lights or socket circuits etc.)
  • C curve (5-10In) —- protection for resistant and inductive loads with low inrush current (groups of bulbs, motors etc)
  • D curve (10-14In) —- protection for circuits with high inrush current (transformers, double-pole motors, motors with heavy start etc)

Dimension (mm):

Hager Mini circuit breaker dimension
Meba breakers MB1236C

The over-current tripping unit protection feature:

Sequence
NO .
Release Test
current I/In
Start state Tripping
time
Expected
results
1 B,C,D 1.13In Cold state t≤1h Not tripping
2 B,C,D 1.45In Start right after
the serial NO .
1 test
t<1h Tripping
3 B,C,D 2.55In Cold state 1s<t<60s

 

Tripping
4 B
C
D
3In
5In
10In
Cold state t≤0.1s Not tripping
5 B
C
D
5In
10In
20In
Cold state t<0.1s Tripping