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Control foot-switch, Circular connector, Connector, Buzzer, Switch
Text version of the page
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® SCHALTBAU
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Schaltbau GmbH has Schaltbau GmbH Schaltbau GmbH
a quality management has an environment manufactures in
system that has been management system compliance with
certified since 1994. that has been certified RoHS
since 2002.
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How snap action works
Snap-action switches are characterized by a switching speed which is largely independent of the actuating speed. The movable contacts are activated by a snap mechanism. The switching action is triggered by a defined force via a defined actuator travel.
When pushbutton© is actuated and depressed beyond the snap-over point of the snap springs ©, plunger© with contact bridge© moves upwards to the effect that the NC contacts© break and the NO contacts© make contact.
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Positive opening opération
Welded contacts or a broken spring can bethe cause of failure of a whole installation.The positive opening opération ensures in accordance with the requirements of the standard that the NC contacts break contact in any event and interrupt thecircuit.
Thefolding down of the positive opening levers©at pivot point©causes plunger© tomoveupwards, resulting in the forced disconnection of contact bridge©from the NC contacts© .
With welded NCcontacts©ora broken spring©, the contacts are forced open by a positive mechanical link between actuator©and contact bridge©. The actuating force is, thereby, handed down in the following way:
1. via the tips © of actuator (pushbutton) © onto the positiveopening levers© and
2. the actuating force is then being transferred to theplunger©via pivotpoint©
3. to contact bridge ©, which is supported by the plunger'^.
4. It results ina reliable interruption of thecircuit in accordance with the requirements of the standard by the positive transmission of force from the actuator© onto the contact bridge©
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Wiping double-breakcontacts
Being loosely supported by the plunger inside the switch, the contact bridge initially meets the V-shapedfixed contacts at one point only ( 1) when making contact, before it isstraightened between them bythecoaxialpressureofthesnapspring.
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The contact bridge slides thereby from position 1 to position 2 and thus créâtes a defined friction.
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During each opération this wiping action results in self-cleaning of the contacts on one side. In total travel position contact is closed on either side of the V-shaped fixed contact (at 2 and 3).
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Snap-action switches :: S|
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Silver/Gold
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Silver/Gold
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Silver/Gold
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Silver
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◄ Séries
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Contact material
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©
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Positiveopening opération*1
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Wiping contacts
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FormC
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Circuitdiagram
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Quality you can count on
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