| Interior switch boxes type CT and CM fabricated from | | | | electric workshop or on the assembly table on the |
| the plastic are manufactured as devices mounted on | | | | construction side. This can avoid uncomfortable |
| or under the wall plaster, with full door (PO) or | | | | installation devices directly on the wall and can avoid |
| transparent door (PT)- Fig. 1. They can be installed both | | | | damages or even destructions of the switch box |
| in newly constructed buildings and in old buildings, | | | | during other builder’s-assembly-works. The frontal |
| where electric wiring is modernized. They are adapted | | | | plate is equipped with mask (hood), which can be |
| mostly in apartments buildings, family houses and in | | | | easily break off, according to the number of modular |
| commercial facilities. Switch boxes are available in one | | | | devices provided for installation. The breakup of masks |
| row version up to three row version. In every row | | | | in required places for the purpose of installing the |
| there is the place for12+1 standard- modules with the | | | | definite number of modular devices is quick and not |
| width 17, 5 mm. They are intended for the assembly of | | | | inconvenient. In case of the incorrect masks breakup, |
| the standard- modular equipment. Switch boxes series | | | | there is the possibility of the repeated blindness of not |
| CT and CM have great interest everywhere, the | | | | used areas with spare covers. Then, mounting rails are |
| quality and aesthetics of works is important. Thanks to | | | | screwed to the switch box base, breaks off special |
| the modern style and design, they are in tune with the | | | | extractions for making easy insertion of wires and |
| inside decorations of every kind of the interior. They | | | | connects inputs and outputs of the circuits. The whole |
| have original casing shape with round edges and | | | | device is covered with the front cover along with door, |
| decorated with moldings doors. The construction of | | | | screwed with screws in four corners of the switch |
| switch boxes makes possible the door opening on left | | | | box. The cover is equipped with special masks |
| or the right side with angle of 180o. Casing is made | | | | (hoods), which protect screws. |
| from self-extinguishing material ABS, with very good | | | | Wires ducting |
| mechanical proprieties and big resistivity. They are | | | | Switch boxes have enough space for ducting the |
| available in the white color - RAL 9010. Complete set is | | | | electric conductors, what considerably makes |
| provided with clamps {connectors} N and PE - Fig. 4, | | | | installation works easy. Wires can be put in inwards of |
| which can be installed in upper or the lower part of the | | | | the switch box from every side. The construction of |
| switch box. All switch boxes have high fire and flame | | | | the box makes also possible the free and safe |
| resistance (respectively in 650oC and 850oC | | | | access to the installed equipment. The size of the box |
| temperatures according to PN-IEC 60695-2-1 norm), | | | | ensures a lot of places for the additional equipment |
| they have isolations class II, cover protection degree | | | | and cables and lets the free access to wires during |
| IP40 and the protection degree against mechanical | | | | the assembly. Wires can be easily lead next to |
| shocks IK 08. They comply also with requirements of | | | | devices or underthe TH35 rail. In switch boxes, |
| many European and Polish norms, e.g. PN-IEC 439-3, | | | | mounted under the wall plaster, the part assembled in |
| IEC 670 and EN 60439-3. | | | | the plaster, has special extractions, whose breakup |
| Assembly | | | | makes possible cables insertion from all sides. In switch |
| A basic advantage of CM and CT switch boxes is the | | | | boxes, mounted on the wall plaster, similar extractions |
| ease of the assembly on all kinds of walls, from | | | | are placed in backside of the casing, assuring an |
| traditional - concrete and brick walls - to plaster- walls. | | | | aesthetical look of the device. |
| Switch boxes can be placed in walls and sectional | | | | Additional accessories |
| sides with small thickness, their depth is only approx. 72 | | | | Switch boxes type CT and CM are provided with |
| mm. Switch boxes consist of two parts : back, to | | | | following accessories: the patent- lock with the key, |
| which are attached mounting rails TH 35 intended to | | | | which can be individually installed to the switch box |
| the modular equipment and clamps {connectors} N and | | | | door, and connecting elements along with gaskets for |
| PE, and also screwed to the front cover door. | | | | coupling switch boxes into groups with protection |
| Easily removed mounting rails are fastened with | | | | degree IP55. Under a row of devices, self-adhesive |
| screws to the base. Electricians like this method of | | | | tags with device signature can be placed. Every |
| switch boxes construction, which makes easy the | | | | switch box can be sealed up, what protects the |
| work, considerably saves the assembly time and | | | | device from the interference of un-authorized persons. |
| equipments. The base of the switch box can be | | | | Summing up, thanks to such advantages as universal |
| fastened to the wall with screws, embedded by | | | | use, interesting pattern-designing, the high grade of |
| polyurethane foam or simply built in. Modular devices | | | | used materials and the simply assembly and installation, |
| mounted on rails are connected with lines(in | | | | switch boxes series CT and CM, have great interest |
| accordance with project)in the manufacturer’s | | | | among electricians, architects and investors. |