Circuit Protection Devices » BONEGA® P-E-P Miniature Circuit Breakers

Faster Assembly and Easy Maintenance

Jističe BONEGA®P-E-P 6J

P-E-P (Perfect Electric Protector)




Elements making assembling easier:

1. Locking Bar

2. Two-Line User's Inscription

3. Two Places for Installation Labels

4. Convenient Short Dimensions

5. Casing Resistance to Gaping Upon Terminal Installation

6. Attach the MCB onto a Flat Surface without DIN Strip

7. Increased Vertical Stability on the DIN Strip

8. Interconnect by Forked or Reed (Rack) Strips

9. Connection of Input or Output on Either End

10. Large Terminals

11. Strong Design of Terminals

12. Locking Protection

13. An Easy Link-Up of the Accessories from Both Sides of the MCB

14. Versatility

15. Quick Removal of the MCB from the DIN Strip, even if the MCB's are Interconnected with a Strip

16. Higher Safety Standard

17. Superior Cover Design

18. A Pawl with Unique Characteristics

19. Variable Design of the Pawl

20. Extraordinary MCB's Body Strength

21. Colored Control Levers

22. Sealing Under Certain Conditions

23. Smoother than any Switch you'll Find

The miniature circuit breaker BONEGA®P-E-P was awarded the prize The gold product at the BAEL Fair in Ostrava

3 years guaranteed

Přehrát animaci1. Locking Bar

A conductor will never be connected incorrectly.

Terminal with locking bar:

A                B              C

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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Přehrát animaci2. Two-Line User's Inscription

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

» Download templates

3. Two Places for Installation Labels

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).

The places have been selected so that it would be possible to use the upper labeled facet, when the MCB is installed below the eye level; when installed above the eye level, it is suitable to use the bottom labeled facet.

You can download templates of installation labels to edit & print.

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4. Convenient Short Dimensions

There is more space for connecting
the conductors on the switchboard.

Rozměrové schema jističe BONEGA<sup>®</sup> E6000 E


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.

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5. Casing Resistance to Gaping Upon Terminal Installation

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:

Přehrát animaci6. Attach the MCB onto a Flat Surface without DIN Strip

No problem in assembling to an old breaker box.

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:

  1. Screw a flat-headed screw into the flat area at the required position. Leave that screw at a distance of approx. 5 mm from the surface (not fully screwed).
  2. Onto the prepared screw put the MCB which has a corresponding cut in its upper part.
  3. Draw out the arresting pawl to its final „open“ position in the bottom part and then fasten the MCB by another screw to the flat surface through a hole in this pawl.

 The connection created in such a way is unusually strong.

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7. Increased Vertical Stability on the DIN Strip

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.
This measure accelerates the installation and makes is easier.

Přehrát animaci8. Interconnect by Forked or Reed (Rack) Strips

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.


Forked strips:
Reed (rack) ones:

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).

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Přehrát animaci9. Connection of Input or Output on Either End

A possibility to connect the input as needed.


Input or output can be connected both onto the upper and lower terminals without impairing the function of the miniature circuit breaker in any way. Through this advantage, the mounting is easier and the distribution arrangements at the switchboards can be variable.

You will appreciate it especially in the switchboards with a multi-row arrangement – you can connect the input between two rows (saving of conductors and time)

10. Large Terminals

Designed to accept a large conductor.

The cross-section 35 mm2 for solid conductor and the cross-section 25 mm2 for stranded conductor is stated for the range up to ln 63 A. The geometric cross-section of the terminal, however, is 50 mm2. You will appreciate the terminal cross-section of 35 mm 2 with all nominal values, when mounting any bigger cross-sections of the conductors which must be dimensioned for higher power inputs.

You do not need to solve such problems by means of additional terminals on which the contact resistances could occur.

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11. Strong Design of Terminals

Impossible to strip the threads even with excessive stress.

The movable terminal has been made of one piece. In contrast to other MCB´s, the joint has been solved by means of an overlapping and not by a so-called “puzzle joint”. Through this overlapping, there goes a screw. It has a double thread length available, which restricts the breaks – “stripping” the thread essentially. The possibility to break it when being mounted is fully excluded even if the torsional stress allowed by the standard is exceeded. (more than 2 N.m)

The clip terminals themselves have in their bottom part also the cross grooves which avoid the conductor to be taken out from the terminal (after being drawn up, the conductor sinks into the grooves). Simultaneously, the contact resistances are limited. (because of the enlargement of the transmission area the burning of the conductors is not possible).

The junction of a conductor and a MCB is very rigid and reliable.

12. Locking Protection

The BONEGA® P-E-P MCB´s cannot be locked from the outside.

red I - ON

green O - OFF


This property protects the electro installation companies against claims, which are caused by the end user, who can be proved wrong with difficulties.


As the most products, also the MCB´s BONEGA® P-E-P has an indication of the contact conditions. That indicates a real contact condition and not only a position of the switch-on lever. In case of “sintered” contacts and switched-off lever, the user is clearly informed about flowing current. As the only ones, our MCB´s have that indication covered with a transparent plastic sight-glass with a lens (magnifying) effect.



The MCB is equipped with a colored indication of contact condition, which is independent on the lever position, and it depends just on the real contact condition. In addition, this indication is protected against dust penetration into the MCB by a transparent plastic cover with magnifying effect.

The philosophy of the colored indication ON/OFF is explained within frequent questions.

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13. An Easy Link-Up of the Accessories from Both Sides of the MCB

A fast connection of the accessories.


The numerous accessories can be linked-up from both sides of the MCB. The interconnection with the MCB is done as follows:

  1. Remove the grey self-adhesive plate, which covers the interconnecting pole on the left or right side (with nail or screwdriver) in accordance with the type of the accessories.
  2. Set up the MCB into the OFF position.
  3. With an easy “snapping” into place without any tools, connect the accessories to the MCB.

The miniature circuit breakers can be linked-up with many accessories. (low-volt releases, ejecting coils, auxiliary contacts, etc.)

All those elements extend the application of the MCB by overvoltage or undervoltage protection, control, regulation, remote control, remote indication of switch-on and switch-off positions of the circuit breaker, programming and measurement. Those combinations enable the circuit breakers to be applied in the range of control of the complicated automated processes.


These elements can be mutually interconnected (e.g. MCB + undervoltage release + auxiliary indicating contact etc.), thus they can form different combinations.

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14. Versatility

No need to buy any expensive
combined devices elsewhere.

The height of the MCB terminals corresponds to other electrical devices BONEGA® , such as current protectors, modular switches etc. the mutual interconnection enables to form combined devices.


For example, the combination of the MCB 1P + N along with a double-pole protective switch or the MCB 3P + N along with a four-pole current protective switches (see protective switches ). This interconnection can be reached easily by means of a 2P or 4P interconnecting strip (see accessories to the MCB´s).

Přehrát animaci15. Quick Removal of the MCB from the DIN Strip, even if the MCB's are Interconnected with a Strip

You need not dismantle the interconnecting strip.

A unique auxiliary mechanism enables the MCB to be easily removed from a row of devices, which are mutually interconnected by a forked or reed (rack) strip without necessity to dismantle the complete interconnecting strip, which is otherwise necessary.

Other advantages of this solution:

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16. Higher Safety Standards

Construction of the cover eliminates electrical current injury
caused by touching the circuit breaker.


All locking bars are protected against danger touch and penetration of small foreign objects (IP protection 20).

17.  Superior Cover Design

The screws on the clip terminals are kept from falling out
of the circuit-breaker body by our unique design.

The clip terminals are seated in the circuit-breaker casing so that the screws of the terminals cannot fall out from the circuit-breaker body, even if they are fully unscrewed from the terminal. This advantage has been reached because the diameter of the hole at the plastic box (casing) for a screwdriver is less than the diameter of the screw head. The screw head has been modified both for cross and flat screwdrivers.

Přehrát animaci18. A Pawl with Unique Characteristics

Quick installation and release.

The fastening mechanism with a movable pawl enables, as follows:


a) the MCB can be fastened to the DIN strip by a simple “snapping”

  1. Move the pawl from the B position into the A position (the production position), if is has not been done yet.

  2. Suspend the MCB in the upper on a projection on the DIN strip’s upper part and snap it on the DIN strip’s bottom part with a swinging motion.

b) the fast dismantling from the DIN strip

  1           2            3

  1. From the fixed condition in the position 3, move the pawl to the Pos. 1 by means of e.g. screwdriver, which is to be put through the pawl hole and to be drawn-half out.

  2. The pawl keeps arrested in the Pos. 1 and the screwdriver can be removed.

  3. Now remove from the DIN strip.

You will appreciate this advantage especially when erecting the multi-pole MCB´s when you need just one instrument because the pawls can be drawn-half to the final arresting positions (position 1). With other MCB´s you have to use e.g. two screwdrivers and to take out the MCB from the DIN strip simultaneously. The installation is essentially easier and faster with the MCB´s BONEGA® P-E-P.

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19. Variable Design of the Pawl

Attaching to a DIN strip with a different thickness.


The MCB is intended to be attached onto the DIN strip EN 50 022 (width - 35 mm, thickness 0,8 - 2 mm). At European market, there are DIN strips with higher dimension tolerances available. Our variable design of the pawl has been fitted to those strips. It can correspond with less exact performance of the DIN strips.

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20. Extraordinary MCB's Body Strength

Extended mechanical reliability of the multi-module design.

The casing design ensures a very high stiffness not only at a single-module type, but even in case of multi-module circuit breakers.



  • a sophisticated placing and number of rivets
  • amount of pivot joints
  • by the design of the casing with stabilizing locks and pivot joints.

21. Colored Control Levers

The colored levers improve the transparency and comply
with the requirements of power plants.

We supply both colored levers and black levers in accordance with the nominal current values (corresponding to the marking of turn fuses).

0,2 A - 1,6 A black  
2 A pink  
4 A brown  
6 A green  
8 A light green  
10 A red  
13 A sandy  
16 A grey  
20 A blue
25 A yellow
32 A purple
40 A black
50 A white
63 A copper-coloured

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22. Sealing Under Certain Conditions

The ability to seal the lever in an ON or OFF position.

The lever can be sealed because of openings in both guiding sidewalls of the switch-off lever. Through these openings, a sealing wire can be fed. This sealing wire passes also through a groove on the movable lever. This groove has been engraved in OFF and ON positions and it disables the motion of the lever itself.

If the lever is sealed in the ON position, the immobility does not render the function of the circuit breaker impossible. In the event of short-circuit or overload, the circuit will be shutdown (independently on the fixed position of the lever). The MCB case enables the lever to be sealed independently on placing the adjacent MCB´s.

23. Smoother than any Switch you'll Find

You'll think it's not even on ...

The most excellent and balanced design of a switching mechanism. Extremely easy running when switching-on the lever even in case of multi-pole models.

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Export Manager: Michal Hudeček, tel: +420 605 518 724,

Sales Department:  - Mrs Adriana Jamná, fax +420 518 335 216, email :, 696 66  Sudoměřice nad Moravou 302


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BONEGA spol. s r.o., Potoční 302, 696 66 Sudoměřice nad Moravou, Czech Republic,, tel. +420 605 518 724