Normally Open Vs Normally Closed Switch. Beware that wiring your switch incorrectly will in fact give you the opposite effect that killswitches are known for. Normally closed something has to push the switch to cause the contacts open.
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In both cases a glass reed is sealed inside the float switch s stem with magnets mounted in an external float. Actually both normally closed normally open switches accomplish the same staccato effect we re looking for. The lamp will energize only if someone presses the switch holding its normally open contacts in the closed position.
Lets take a look at each type to get a better perspective.
Open float switches when a float switch circuit is open it is referred to as a normally open float switch and is set to close when liquids reach a certain level. In both cases a glass reed is sealed inside the float switch s stem with magnets mounted in an external float. If the pushing stops the contacts will open. Open float switches when a float switch circuit is open it is referred to as a normally open float switch and is set to close when liquids reach a certain level.
