RSA (basic serie)

Application

Terminal blocks RSA are used for connection low and extra low voltage electric circuits with copper solid, stranded eventual aluminum conductors. The range of possible connectible conductors is from 0.15mm2 to 95 mm2. Stranded conductors need not be terminated with contacts. It is possible to apply terminal blocks according to ČSN 33 2000-3 in the environment AB 7, AF 2 and selected terminal blocks in the environment according to AG 2 and AH 2. The temperature range of terminal blocks RSA is -40°to 55°C.

Selected blocks are tested for seismic resistance according to ČSN IEC 980:1993 and related standards and according to GOST R certification. The RSA terminal blocks are used in all segments of the electro-technical industry, including the most demanding power operating units.

Standards according to which the terminal blocks are tested:

ČSN EN 60998-1, 60998-2-1, ČSN EN 60947-1 and 60947-7-1

IEC 60947-7-1, 60998-2-1 (CB certificates)

ČSN IEC 980:1993 (seismic resistance test)

Construction for clamping of the conductor

For RSA 6 and RSA 10 types, a brass piece is used for clamping of the conductor with Ni galvanic surface treatment. For all other types, a steel bracket with ZnCrCo galvanic surface is used for reliable clamping of conductors.  

Screws

In terminal blocks RSA 2,5A to RSA 35 A, screws are used with a combined screw head – a screwdriver with flat blade or cross type PH can be used. According to the size of the terminal block it is recommended to use various sizes of screwdrivers (the producer of terminal blocks offers professional tools directly recommended for use during work with RSA terminal blocks, including specially modified bits).  RSA 70 A terminal blocks have screws with a hexagonal hole for tightening by an Allen key.

The material of the screws is steel, galvanic-surfaced ZnCrCo. When using the recommended tool and tightening torque, the supplier will guarantee non-damaging of the screw even in the case of repeated tightening of the screw.

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Insulating body

For all types the material for the insulating body is polyamide PA 6, inflammability V0 according to UL 94, halogen-free. Hot loop 960°C.

There are 12 colour shades standard.

Clamping on the DIN rail

It is possible to clamp the terminal blocks on DIN rails TS 15, TS 35x7,5, TS 35x15 and TS 32 (the RSA 70 A type can be only clamped on TS 35x15 and TS 35x7,5).

Interconnection

Neighbouring terminal blocks can be mutually connected by screw interconnections (a multiple of two to ten for the RSA 4A types; a multiple of two to three for the RSA 6 to RSA 35 A types and a multiple of two for the RSA 70 A type), or by a plug-in bridge (RSA 4A). The RSA 2.5A terminal block is connected exclusively by the plug-in bridge (delivered as multiples of 2, 3 and 4), with the possibility of interconnection in infinity series, which are inserted from above between the pressing spring and the joining bridge. The assembly is performed by the simple insertion of the plug-in bridge into the spring of the terminal block which will speed up the connection of the terminal blocks. For dismantling it is recommended to use a screwdriver.

Protection against injury from electric current

Covering IP 20 is ensured for RSA 2,5A to RSA 35 A types. For the RSA 35 A type to achieve the IP 20 covering it is necessary to use additional accessories – a side cover - in the case that in the terminal block the conductor is not connected or the conductor with the cross-section 10mm2 and lower is connected – otherwise the terminal block has IP 10 covering. The terminal block RSA 70 A has IP 10 covering.

Terminal blocks RSA 2,5 A, RSA 4 A to RSA 16 A have IP 20 covering also in the case of connection by screwing interconnections or by plug-in bridges when they are ended with routinely delivered profile ending. RSA 2,5 A plug-in bridges have IP 20 covering without further modification also by applied plug-in bridge.

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Marking

Terminal blocks RSA, RSA PE, RSA PE IS can be marked by means of a RSA / RVA marking strip delivered by the producer. Terminal blocks can also be marked by standardized labels which are offered by other suppliers of terminal blocks or suppliers and producers of marking elements for general electrical technology. For terminal blocks RSA it is possible to use type marking labels, for example DEK (Weidmüller), WGO (Wago), KMR (Murrplastik) or SIHF (Grafoplast).

There are several methods for printing the marking elements inserted into RSA terminal blocks. An RSA / RVA marking strip can be printed directly at the supplier on request, it is possible to print on the plotter, mark with special self-adhesive foil printable by a standard printer or self-adhesive sets of numbers. Standardized marking labels can be printed on most common inkjet plotters.

For entry to the various types of terminal blocks RSA you can choose the top menu or directly from the links below:

RSA 2,5 A

RSA 4 A

RSA 6

RSA 10

RSA 16 A

RSA 35 A

RSA 70 A