Abstract: A switch includes a contact mechanism having at least one contact and defining a longitudinal axis. Actuation of a handle moves the contact mechanism transversely to the longitudinal axis between an open position and a closed position in relation to at least one fixed contact, whereby a contact spring loads the contact mechanism to seek the closed position. A support part is operatively connected to the handle and forms an abutment for support of the contact spring. The support part is moveable relative to the contact mechanism. Operated by the handle is a locking mechanism which is constructed to hold the contact mechanism in an intermediate position between the open and closed positions to maintain the contact of the contact mechanism at an electrically insulated distance from the fixed contact. A release mechanism interacts with the locking device for releasing the contact mechanism to move to the closed position.

Abstract: In a switching device (S) for electrical installations with a housing (2) having terminals (1), it is proposed for increasing the safety margin against spark-over between electrically conducting outside sections of two adjacent, identically constructed switching elements to provide at least one shielding element (3) that is formed as one-piece on the housing in a region of the terminals (1), or at least one recess (8), indentation (8) and the like, for lengthening the leakage current path on at least one housing part and/or on at least one section formed on the housing (2). In addition, in a switching device (S) for an electrical installations having a housing (2), with at least one terminal (1), means are provided for completely unscrewing the clamping screw (15) from the clamping opening (17) for easy insertion of ring cable lugs.

Abstract: In a switching device (S) for electrical installations with a housing (2) having terminals (1), it is proposed for increasing the safety margin against spark-over between electrically conducting outside sections of two adjacent, identically constructed switching elements to provide at least one shielding element (3) that is formed as one-piece on the housing in a region of the terminals (1), or at least one recess (8), indentation (8) and the like, for lengthening the leakage current path on at least one housing part and/or on at least one section formed on the housing (2). In addition, in a switching device (S) for an electrical installations having a housing (2), with at least one terminal (1), means are provided for completely unscrewing the clamping screw (15) from the clamping opening (17) for easy insertion of ring cable lugs.

Abstract: A switch includes a contact mechanism having at least one contact and defining a longitudinal axis. Actuation of a handle moves the contact mechanism transversely to the longitudinal axis between an open position and a closed position in relation to at least one fixed contact, whereby a contact spring loads the contact mechanism to seek the closed position. A support part is operatively connected to the handle and forms an abutment for support of the contact spring. The support part is moveable relative to the contact mechanism. Operated by the handle is a locking mechanism which is constructed to hold the contact mechanism in an intermediate position between the open and closed positions to maintain the contact of the contact mechanism at an electrically insulated distance from the fixed contact. A release mechanism interacts with the locking device for releasing the contact mechanism to move to the closed position.

Abstract: A ground fault circuit interrupter has a residual current transformer (7) which is connected via evaluation and tripping electronics (6) to a open circuit shunt release (3), the open circuit shunt release (3) via a breaker mechanism (5) actuating the main contacts (10) in the leads (L1, L2, L3) to be monitored, the line voltage supply of the evaluation and/or tripping electronics (6) and/or the open circuit shunt release (3) being connected electrically separably to a least two leads (L1, L2, L3, N) via auxiliary contact apparatus (8). In this way the line voltage supply for the evaluation and/or the tripping electronics (6) and the open circuit shunt release (3) can be interrupted independently of the line-side or load-side terminal with respect to the main contacts (10) and is still ensured when one or two leads (L1, L2, L3, N) are interrupted.