Installation switching device

1. An installation switching device comprising:

a housing having a front, and a rear face, a mounting side, at least one front and rear narrow side, two wide sides and a terminal connection space laterally limited by the two wide sides and having an opening at least on the rear face;

a screwless terminal connection including a clamping spring disposed in a terminal connection space and configured to connect a plurality of connecting conductors, and a terminal cover part swivelably connected to the housing and configured to cover the opening, the terminal cover part having a terminal face with a plurality of terminal openings, each corresponding to one of the plurality of connecting conductors to be connected and a guide device molded onto each of the at least one terminal openings and configured to guide the connecting conductors; and

a spring actuating device molded onto the terminal cover part and arranged so as to load the clamping spring in an opening manner when the terminal cover part is swiveled against the clamping spring.

2. The installation switching device as recited in claim 1 , wherein the installation switching device includes at least one of a circuit breaker, a fault-current circuit breaker, and a motor protection switch.

3. The installation switching device as recited in claim 1 , wherein the guide device includes a tube-like hollow body forming a lead-in conduit also used as a spring actuating device for the clamping spring.

4. The installation switching device as recited in claim 1 , wherein the housing includes a projection, wherein the terminal cover part can be pressed against the clamping spring and is resiliently loaded by the clamping spring against the projection opposing the direction of insertion of the connecting conductor.

5. The installation switching device as recited in claim 1 , further comprising a closing part coupled swivelably with a free end of a first part-body of the terminal cover part covering the terminal connection space at the rear face in collaboration with a housing-fixed rear face end, the closing part at least partially overlapping the housing-fixed rear face end on actuation of the terminal cover part.

6. The installation switching device as recited in claim 5 , further comprising a hinge coupling the closing part to the terminal cover part.

7. The installation switching device as recited in claim 5 , further comprising a housing-fixed rocker-like guide and laterally protruding guide pins, wherein the closing part is guided displaceably in the rocker-like guide in parallel with the front face via the guide pins.

8. The installation switching device as recited in claim 5 , wherein the terminal cover part, following a terminal face, includes a spacing area forming a closure at the terminal cover part side of the terminal connection space in an area of the rear narrow side, wherein the closing part is coupled swivelably so as to form a coupling at an end of the spacing area pointing towards the front face.

9. The installation switching device as recited in claim 5 , wherein the closing part includes a material having different mechanical properties than the first part-body.

10. The installation switching device as recited in claim 6 , wherein the hinge and the closing part, in an area of the hinge, are comprised of a material having different mechanical properties than the first part-body.

11. The installation switching device as recited in claim 8 , wherein the spacing area is configured to be rigid and the closing part is configured to be more flexible than the spacing area.

12. The installation switching device as recited in claim 1 , wherein the clamping spring acts as a compression spring on a conductor end and clamps the conductor end at an abutment, and wherein the screwless terminal connection includes a conductor bar having a connecting end, an adjoining discharge, area, a window-like opening with a support edge at the connecting end, and a clamping edge opposite the support edge at a transition of the connecting end into the discharge area, and wherein a support leg supports the clamping spring at the support edge of the conductor bar, and wherein an arc piece adjoins the support leg and is adjoined by a clamping leg so as to clamp the conductor end between the clamping leg and the clamping edge.

13. The installation switching device, as recited in claim 12 , wherein the arc piece is adjoined by a first, part-clamping leg changing into a second-part clamping leg bent away from the first-part clamping leg at a bending edge so as to form an obtuse angle between the first- and the second-part clamping leg opening in a direction of insertion of the connecting conductor.

14. The installation switching device as recited in claim 13 , wherein the conductor bar approximates a U-shape, the connecting end forming one U-leg and the discharge area formed by a crossbar and a second U-leg.

15. The installation switching device as recited in claim 14 , wherein a discharge bar extends approximately perpendicularly to the second U-leg and is disposed onto a free end of the second U-leg, and wherein the discharge bar supports a side of the connecting end opposite the clamping edge.