Provided is a contact device in which all of three movable contacts can be securely brought into contact with fixed contacts. The contact device includes a fixed terminal 37 that has a fixed contact 35, a movable terminal 28 that moves toward and away from the fixed terminal 37 and has three movable contacts 31a, 31b, and 31c that are brought into contact with the fixed contact 35, and a pressing spring 33 that presses the movable terminal 28 and brings the movable contacts 31a, 31b, and 31c into contact with the fixed contacts 35 at a predetermined pressing force. The point of application of the pressing spring 33 is located in a triangle formed by internal tangents of the three movable contacts.

Provided are an electronic switching device and a method for manufacturing the same. The electronic switching device (10) includes a fixed unit (110)including a fixed unit body (11) defining an outer appearance thereof and a fixed contact part (123) disposed within the fixed unit body, a movable unit(140) including a movable contact part (153) selectively contacting the fixed contact part to supply current, a moving part (143) provided in the movable unit to guide a movement of the movable contact part toward the fixed contact part, a coil (180) to which power is applied to move the moving part, and an elastic member (160) that is elastically deformable while the moving part moves. At least one of the fixed unit and the moving part has a through hole (115, 148) so that an inner component of the fixed unit or the moving part communicates with the outside to allow a preset signal to pass therethrough.

Procédé de diagnostic de l'état de fonctionnement d'un contacteur comprenant :

- une unité de traitement (2) destinée à agir sur des moyens de commande (20) de la tension ;

- au moins une bobine d'actionnement (3) ;

- des moyens de mesure (24, 25) d'au moins une caractéristique électrique (K) de ladite au moins une bobine d'actionnement (3) ;

- au moins une diode de roue libre (D1) connectée en parallèle de ladite au moins une bobine d'actionnement (3), et des moyens de mesure (24, 25).

Le procédé consiste à :

- envoyer un ordre de retombée consistant à fixer une tension dite de retombée aux bornes (L1, L2) de la bobine d'actionnement (3) ;

- mesurer pendant un temps de retombée (Ta), une caractéristique électrique (K) de ladite bobine d'actionnement (3) ;

- reconstituer à partir des mesures au moins une valeur spécifique;

- comparer ladite au moins une valeur spécifique à un gabarit de fonctionnement initial spécifique du contacteur ;

- diagnostiquer l'état d'usure du contacteur en fonction du positionnement ladite au moins une valeur spécifique par rapport au gabarit (G1, G2).

Die Erfindung betrifft eine Sicherheitsschalteinrichtung (1) mit einem Reset-Eingang (IN) zum Starten der Sicherheitsschalteinrichtung (1) nach einem Auslösen ihrer Sicherheitsfunktion, wobei eine Auswerteschaltung (2) mit dem Reset-Eingang (IN) verbunden ist, um das Anlegen eines Startsignals zu erfassen, und die Sicherheitsschalteinrichtung (1) verschiedene Startmodi bereitstellt und ausgeführt ist, einen Startmodus in Übereinstimmung mit dem erfassten Startsignal auszuwählen, wobei die Auswerteschaltung (2) eine Abtasteinrichtung (4) umfasst, um das an dem Reset-Eingang (IN) anliegende Signal abzutasten und aus einer Folge von Abtastwerten zu erfassen.

An object of the present invention is to provide a contact switching device in which a short circuit contingent to flow-out of scattered objects caused by arc is eliminated, so that life durability is increased. For this, there is provided a contact switching device in which a movable iron core provided at one end portion of a movable shaft is attracted to a fixed iron core, based on excitation and degauss of an electromagnet portion, by which the movable shaft reciprocates in a shaft center direction, and movable contacts of a movable contact piece arranged at another end portion of the movable shaft contact and depart from fixed contacts. Particularly, contact surfaces between the fixed contacts and the movable contacts are arranged inside a box-shaped insulating member, and an opening portion of the insulating member is closed by a lid body having at least one extending portion in a direction of an arc generated between the fixed contacts and the movable contacts.

An object of the invention is to provide a contact switching device that prevents scattered objects caused by arc from coming in, so that the scattered objects do not disturb operation of a movable shaft. For this, there is provided a contact switching device in which a movable iron core (142) provided at one end portion of a movable shaft (145) is attracted to a fixed iron core (138), based on excitation and degauss of an electromagnet portion, by which the movable shaft (145) reciprocates in a shaft center direction, and a movable contact (148a) of a movable contact piece (148) arranged at another end portion of the movable shaft (145) contacts and departs from a fixed contact (133a). The movable shaft (145) is inserted into a through-hole (135f) provided in a magnet holder (135) so as to move slidably, and an annular partition wall (135g) is projected on a movable shaft (145) side with respect to the movable contact (148a) in a vicinity of an opening portion of the through-hole (135f) of the magnet holder (135).

A combined function actuator comprising a secondary actuator which is physically located entirely within the physical space of a circuit protection and control device primary short circuit solenoid actuator. The secondary actuator combined function housing is a plunger to the primary actuator and also a magnetic isolator having contained within it the means for independent actuation of a voltage independent or a voltage dependant circuit protection and control device. The combined primary and secondary actuator when engaged with a suitable mechanism can be utilised to open and close the main contacts of a circuit protection and control device. A significant amount of space within a circuit protection and control device is made available by each combined actuator thus enabling additional functionality to be added to a circuit protection and control device without increasing the overall dimensions of the device.

In a manually operated switch for cutting off direct current, a PTC 9 as a non-linear resistor is parallel connected to a contact circuit composed of a first fixed contact 5-1 and a first movable contact 4-1, via a connecting unit 3-1, a top electrode 9-1, a bottom electrode 9-2, a connecting wire 6a and a movable unit 6. Firstly, the first fixed contact 5-1 and the first movable contact 4-1 are opened. However, since the PTC 9 is parallel connected and the contact circuit forms a closed circuit, surge voltage is difficult to occur, and cutoff current flows in the PTC 9. After peak current passes by the decrease of a resistance value due to the instantaneous heating of the PTC 9, voltage returns to power supply voltage by the increase of the resistance value of the PTC 9, and then the fixed contact 5-2 and the second movable contact 4-2 are opened. Accordingly, current is completely cut off.

Der Transportbehälter dient zur Aufnahme von in stangenförmigen Magazinen angeordneten Relais, wobei die Magazine jeweils einen durchgehenden Hohlraum mit stirnseitigen Öffnungen zum Einschieben der Relais aufweisen. Der Transportbehälter ist als eine in der Grundform quaderförmige, zur Oberseite offene Kassette (1) ausgebildet, deren Innenraum der Länge und Breite eines Magazins (2) und deren Höhe einer vorgegebenen Anzahl von übereinandergestapelten Magazinen (2) entspricht.

Bei einer Schaltanordnung in Kraftfahrzeugen, bei der ein elektromagnetisches Relais und ein Sicherungselement in Reihe liegen, ist einer der Relais-Kontakte als Überstromsicherung ausgebildet und dient damit als Sicherungselement. Auf diese Weise lassen sich unter deutlicher Verringerung des Bauvolumens eine Vielzahl von Kontakten einsparen und die bei Kontakten stets auftretenden Kontaktierungsprobleme beseitigen.