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A conductor will never be connected incorrectly.
Terminal with locking bar: |
A B C |
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The design is based on the fact that each terminal has so-called „flat locking bar“ in its bottom section. When tightening the screw, this bar occurs step by step at the inlet hole and closes the space under the terminal. So it avoids the conductor to be put-in under the terminal clip where it cannot be interconnected with the inlet or outlet from the MCB.
The clip terminals have cross grooves at the bottom section – those grooves avoid the conductor to be drawn-half out from the terminal because after being tightened, the conductor „sinks“ into the grooves; in addition, the transfer surface is extended and the contact resistances are limited essentially.
This is an unique solution which helps to avoid problems in case when the terminal cannot be seen during installation. This principle excludes the possibility to place the conductor under the terminal. In this way, frequent (latent) claim defects can be avoided. Such defects occurred mostly at the end user and the switchboard manufacturers had to bear additional expenses for „simple“ removal of such defects.
This solution avoids claims, makes assembling faster and increases reliability.
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Even if the
cover plate of a switchboard has been removed, you can still see which circuit
is protected by the MCB.
Each pole is equipped with an aesthetic transparent swing cover placed above the switching-off lever. Under that cover, there is a paper two-line inscription label put into slots. It is also possible to write on the plastic surface. The cover has an arrestment in the upper open position.
Create & print your own inscription |
The installation instructions can always be easily seen.
On each body, there are two facets, dimensions 4,8 x 17,6 x 0,5 mm, with a
dovetail lock for installation labels. See the photos above (on the left side,
an upper label marked as FA – 02, on the right side a bottom label marked as FA
– 15).
You can download templates of installation labels to edit & print. |
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There is more space for
connecting
the conductors on the switchboard.
As to the available information, because of their extraordinary short dimensions (especially the width of only 81 mm), our P-E-P MCB´s are classified as among the smallest MCB´s over the world in the category of short-circuit resistance up to 10 kA. In the category of 15 kA, we have the shortest dimensions worldwide (see the dimensioned chart).
Thus there is more space for conducting and connecting the conductors in the installation section which is covered at a switchboard. This property can be appreciated especially when using these MCB´s at small apartment switchboards.
There is no gaping of the MCB
casing or cross threading of
the terminal in the casing.
It is a relatively usual problem on other MCB´s – upon an excessive screwing-up of the terminal, the casing opens or the terminal crosses in the casing. On some MCB´s, even the joints and thus the circuit are broken. |
It is avoided on the MCB´s BONEGA® P-E-P by means of:
No problem in assembling to an old breaker box.
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You will appreciate that advantage – a possible attachment of our MCB
directly onto the flat surface without using the DIN strip - especially when
repairing old switchboards. This possibility do not require any modification of
the MCB.
How to do it:
The connection created in such a way is unusually strong. |
When tightening the
terminals,
the MCB on a DIN strip will be straight.
Another new concerning the BONEGA® P-E-P circuit breakers is
a very essential improvement of stability, while the conductors are
connected to the MCB. When drawing up the terminals, the MCB´s tend to
incline and it is necessary to “pre-stress” them manually. The high stability has been reached by a plastic stop on the MCB bottom. After attachment of the MCB to a DIN strip, this stop functions as the “contra-pressure” (with the torsional stress of the MCB´s body). In contrast to the competitors, the movable pawl has only the holding function. The other hand does not have to engage itself with “pre-stressing” of
the MCB and can concentrate only to hold the conductor to be connected.
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You can choose any
system
to interconnect the terminals.
For the P-E-P miniature circuit breakers you can use both the forked and the reed (rack) standardized interconnecting strips. The opinions of application of those two types differ.
The strips are supplied either with the cross-sections of 16 mm2 or 10 mm2, always with insulating material made of self-extinguishing ABS-VO. The copper contacts (reeds) are located closed at the strip edges. See our offer of MCB´s accessories.
The single-pole MCB´s can be interconnected also in the so-called “German” way, i.e. with a special strip without any insulation. When accepting this method, it is necessary to break off both barriers against the inter-phase short-circuit (see protection against an inter-phase short-circuit).
A possibility to connect the input as needed.