US 4,206,430 AGranted

Bipolar protective switch

AssigneeWeber AG Fabrik Elektrotechnischer Artikel und Apparate

InventorsArthur Rusch, Josef Flory

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Abstract

A bipolar protective switch has a two-piece housing. An electromagnet constitutes the actuating device made either in the form of a zero voltage actuator or an excess current actuator. The armature of the electromagnet drops in the event of a voltage failure or is attracted if an excess current appears, thus disconnecting the switch. The switch can be turned back on again only after the voltage returns or normal current returns by the actuating device. A rocker is disposed on the narrow upper surface between the two pieces of the housing as the actuating member. The electromagnet and connecting members are disposed on the underside of the housing, a portion of the electromagnet being located between the two pieces of the housing. A support of an insulating material, is disposed in the housing upon which support connecting members are disposed. Two fixed contact members located side by side and two movable contacts, as well as a lever which is common to the two movable contacts is swivelable, and is subject to the force of a spring, the lever being connected to the rocker by a yoke. The lever is lockably connected with one arm of a two-armed release lever disposed on the support, the other arm being effectively connected with a release rod of the electromagnet.

Claims10

Dependent claims

In a bipolar protective switch with a two-piece housing, the housing including an actuating member and connecting members;

an actuating device including an electromagnet having an armature and a release rod, the device being made either in the form of a zero voltage actuator or an excess current actuator, whereby the armature of the electromagent drops out in the event of a voltage failure or is attracted if an excess current appears, thus disconnecting the switch, so that the switch can be turned back on again, only after voltage returns or normal current returns, by the actuating member, the improvement wherein said actuating member is a rocker disposed on a narrow upper surface between said two pieces of said housing;
wherein said electromagnet and said connecting members are disposed on a narrow underside of said housing, a portion at least of said electromagnet being located between said two pieces of said housing;
and including a support of insulating material disposed in said housing and upon which said connecting members are disposed;
two fixed contact members located side-by-side in a position substantially parallel to a narrow top surface of said housing;
a spring;
two movable contacts and a swivelable lever common to said two movable contacts;
and subject to the force of said spring, said swivelable lever being connected to said rocker by a yoke in the manner of a knee joint, and which swivelable lever is lockably connected with one arm of a two-armed release lever disposed on said support, the other arm of said release lever being connected with said release rod of said electromagnet;
and wherein only said rocker and said electromagnet are directly supported by said housing, all other components being supported be said support of insulating material.

5 more elements

In a bipolar protective switch with a two-piece housing, the housing including an actuating member and connecting members;

an actuating device including an electromagnet having an armature and a release rod, the device being made either in the form of a zero voltage actuator or an excess current actuator, whereby the armature of the electromagent drops out in the event of a voltage failure or is attracted if an excess current appears, thus disconnecting the switch, so that the switch can be turned back on again, only after voltage returns or normal current returns, by the actuating member, the improvement wherein said actuating member is a rocker disposed on a narrow upper surface between said two pieces of said housing;
wherein said electromagnet and said connecting members are disposed on a narrow underside of said housing, a portion at least of said electromagnet being located between said two pieces of said housing;
and including a support of insulating material disposed in said housing and upon which said connecting members are disposed;
two fixed contact members located side-by-side in a position substantially parallel to a narrow top surface of said housing;
a first spring;
two movable contacts and a swivelable lever common to said two movable contacts and subject to the force of said first spring, said swivelable lever being connected to said rocker by a yoke in the manner of a knee joint, said swivelable lever being latchably connected with one arm of a two-armed release lever disposed on said support, the other arm of said release lever being connected with said release rod of said electromagnet;
and wherein said yoke which connects said rocker to said swivelable lever is inserted with its upper leg in holes of said rocker and with its lower leg in recesses of said swivelable lever, said upper leg of said yoke being subject to the action of a second spring which exerts pressure in a lengthwise direction of said swivelable lever and is anchored on said support;
a lower leg of said yoke being guided in a slot of a rib on said support, said slot running in a lengthwise direction of said housing.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 05/891,389Filed 29 Mar 1978
Priority: CH 4056/7731 Mar 1977
Granted: 3 Jun 1980
Term ends: Not estimatedThe source records don’t support an estimate.

Classification6 codes

H01H 71/08
Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00: terminals; Connections
H01H 71/2463
Electromagnetic mechanisms: with plunger type armatures
H01H 73/52
Having both electrothermal and electromagnetic automatic release: reset by tumbler
H01H 83/12
Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by…:…