Main circuit breaker MBI32-100 made by Meba

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Specification

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.

Parameter

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