A circuit is the closeup of the door loop through which electrical power can flow. A closed circuit permits an uninterrupted flow of electricity from the resource of power, v the conductor or wire, come the load, and then ago again come the floor or source of power. An open circuit will certainly not command electricity because either air, or some other insulator has actually stopped or damaged the circulation of current in the loop.

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## Maintained/Momentary Switches

Carling supplies a wide range of circuit configurations with both maintained and also momentary move functions. A maintained switch maintains the mode or place to which that is actuated. Because that example, if switched come the "ON" position, the move will remain in the "ON" place until the is physical switched to one more position.

A momentary switch is a "spring return" switch which automatically returns to its original or at remainder position. A basic example the a short-term switch would be a doorbell, which instantly returns ago to its resting "OFF" position once no longer actuated.

Carling Technologies" catalogs denote short-lived circuits making use of parenthesis. For example, the doorbell circuit would certainly be represented as (ON)-NONE-OFF, whereby (ON) is the short-term position.

## Normally Open/Normally Closed

Momentary switches have the right to be explained as typically open or typically closed, which refers to the switch"s original or at rest position. A normally open up or N.O. momentary switch has actually one or much more circuits that room open once the switch actuator is in ~ its common or rest position. One "open" circuit is an incomplete circuit, v "open space" between contacts. As such a usually open circuit can likewise be described as "normally OFF".

A normally closeup of the door or N.C. short-lived switch has actually one or much more circuits that are closed when the switch actuator is at its normal or rest position. A close up door circuit is a completed circuit. As such a typically closed circuit can also be described as "normally ON".

## Throw

The throw of a move is the variety of circuit paths that have the right to be controlled by any one pole. Typically the variety of "ON" positions the a switch has is the very same as the number of throws. A single throw move (ST) opens or closes a circuit in ~ only among the excessive positions that its actuator, the most common example being an ON-NONE-OFF switch. A double throw move (DT) switch opens or closes a circuit in ~ both too much positions of its actuator, a usual example gift an ON-NONE-ON switch.

## ON-NONE-OFF

The ON-NONE-OFF or ON-OFF circuit is a maintained, single throw, two-position switch circuit. In general, for simple unlighted solitary pole switches, the ON position closes the circuit at move terminals 2 & 3. For an easy unlighted double pole switches, the circuit is closed in ~ terminals 2 & 3 and 5 & 6.

If the switch is mounted vertically, friend would press the optimal of a rocker actuator or push a toggle actuator increase to place the move to the top top position. Friend would press the bottom the the rocker or relocate a toggle bottom to set the move to the off position, where all switching circuits would be open.

## OFF-NONE-ON

The OFF-NONE-ON or OFF-ON circuit is a maintained, single throw, two-position switch circuit. In general, for basic unlighted solitary pole switches, the ON place closes the circuit at switch terminals 1 & 2. For an easy unlighted dual pole switches, the circuit is closed in ~ terminals 1 & 2 and 4 & 5.

If the move is mounted vertically, friend would push the optimal of a rocker actuator or push a toggle actuator increase to location the switch to the turn off position, whereby all switching circuits would certainly be open. Girlfriend would press the bottom the the rocker or move a toggle bottom to collection the switch to the on position.

## (ON)-NONE-OFF

The (ON)-NONE-OFF or (ON)-OFF circuit is a momentary, single throw, two-position switch circuit. In general, for an easy unlighted single pole switches, the short-term ON position closes the circuit at move terminals 2 & 3. For basic unlighted double pole switches, the circuit is closed at terminals 2 & 3 and also 5 & 6.

If the move is placed vertically, girlfriend would press the peak of a rocker actuator or press a toggle actuator increase to relocate the switch to the short-lived ON position. Due to the fact that this is a generally open (N.O.) circuit, as soon as you relax the actuator that will immediately return to its normal at remainder OFF position, whereby all switching circuits would be open.

## ON-NONE-(OFF)

The ON-NONE-(OFF) or ON-(OFF) circuit is a momentary, single throw, two-position move circuit. In general, for straightforward unlighted solitary pole switches, the ON position closes the circuit at move terminals 2 & 3. For an easy unlighted twin pole switches, the circuit is closed in ~ terminals 2 & 3 and 5 & 6.

If the move is an installed vertically, girlfriend would push the bottom the a rocker actuator or push a toggle actuator bottom to relocate the switch to the temporary OFF position, where all switching circuits would certainly be open. Due to the fact that this is a normally closed (N.C.) circuit, once you relax the actuator that will instantly return to its typical at rest, top top position.

## OFF-NONE-(ON)

The OFF-NONE-(ON) or OFF-(ON) circuit is a momentary, single throw, two-position switch circuit. In general, for basic unlighted solitary pole switches, the temporary ON position closes the circuit at move terminals 1 & 2. For straightforward unlighted double pole switches, the circuit is closed in ~ terminals 1 & 2 and also 4 & 5.

If the move is an installed vertically, you would push the bottom that a rocker actuator or push a toggle actuator downward to relocate the switch to the short-term ON position. Because this is a normally open (N.O.) circuit, once you release the actuator the will automatically return to its typical at remainder OFF position, wherein all switching circuits would certainly be open.

## (OFF)-NONE-ON

The (OFF)-NONE-ON or (OFF)-ON circuit is a momentary, single throw, two-position move circuit. In general, for simple unlighted solitary pole switches, the ON place closes the circuit at switch terminals 1 & 2. For straightforward unlighted dual pole switches, the circuit is closed at terminals 1 & 2 and 4 & 5.

If the move is an installed vertically, girlfriend would press the height of a rocker actuator or push a toggle actuator increase to relocate the move to the short-term OFF position, whereby all convert circuits would be open. Due to the fact that this is a generally closed (N.C.) circuit, once you release the actuator it will instantly return come its normal at rest, top top position.

## ON-NONE-ON

The ON-NONE-ON or ON-ON circuit is a maintained, double throw, two-position move circuit. In general, for basic unlighted solitary pole switches, ON positions close at the circuit at move terminals 1 & 2 and 2 & 3. For simple unlighted twin pole switches, the circuit is closed in ~ terminals 1 & 2 and also 2 & 3; 4 & 5 and also 5 & 6.

If the move is mounted vertically, girlfriend would press the peak of a rocker actuator or push a toggle actuator upward to collection the move to the very first ON position. Girlfriend would press the bottom the the rocker or move a toggle downward to collection the move to the second ON position. This move circuit walk not have actually an off position, wherein all switching circuits would be open.

## ON-NONE-(ON)

The ON-NONE-(ON) or ON-(ON) circuit is a momentary, dual throw, two-position move circuit. In general, for basic unlighted solitary pole switches, the preserved ON position closes the circuit at switch terminals 2 & 3, and the short-term ON position closes the circuit at switch terminals 1 & 2. For straightforward unlighted twin pole switches, the maintained ON circuit is closed in ~ terminals 2 & 3, 5 & 6; and the short-lived ON circuit is closed in ~ terminals 1 & 2, 4 & 5.

If the switch is placed vertically, girlfriend would push the bottom of a rocker actuator or press a toggle actuator bottom to move the move to the temporary ON position. Due to the fact that this is a usually closed (N.C.) circuit, once you relax the actuator that will automatically return to its normal at rest kept ON position. This switch circuit go not have actually an OFF position where every switching circuits would be open.

## ON-OFF-ON

The ON-OFF-ON circuit is a maintained, twin throw, three-position move circuit. In general, for straightforward unlighted solitary pole switches, ON positions close the circuit at switch terminals 1 & 2 and 2 & 3. For straightforward unlighted dual pole switches, the circuit is closed in ~ terminals 1 & 2, and 2 & 3; 4 & 5 and 5 & 6.

If the switch is mounted vertically, you would press the top of a rocker actuator or push a toggle actuator upward to collection the switch to the an initial ON position. Friend would relocate the rocker or toggle actuator come the center position to set the switch to OFF, where all switching circuits would be opened. Girlfriend would push the bottom the the rocker or relocate a toggle downward to collection the move to the second ON position.

## ON-OFF-(ON)

The ON-OFF-(ON) circuit is a momentary, dual throw, three-position switch circuit. In general, for an easy unlighted single pole switches, the kept ON position closes the circuit at move terminals 2 & 3, and the momentary ON place closes the circuit at move terminals 1 & 2. For simple unlighted dual pole switches, the kept ON circuit is closed in ~ terminals 2 & 3,5 & 6; and also the temporary ON circuit is closed at terminals 1 & 2, 4 & 5.

If the switch is placed vertically, you would push the bottom of a rocker actuator or push a toggle actuator downward to relocate the switch to the short-lived ON position. When the actuator is released, that will return to the center OFF, at remainder position. Girlfriend would press the bottom that the rocker or move a toggle bottom to collection the switch to the maintained ON position. Indigenous this position, you would certainly manually relocate the rocker or toggle actuator to the facility position to set the move to OFF, where all switching circuits would be open.

## (ON)-OFF-(ON)

The (ON)-OFF-(ON) circuit is a momentary, dual throw, three-position switch circuit. In general, for straightforward unlighted solitary pole switches, the momentary ON location close in ~ the circuit at switch terminals 1 & 2 and 2 & 3. For simple unlighted double pole switches, the circuit is closed in ~ terminals 1 & 2 and 2 & 3; 4 & 5 and also 5 & 6.

If the switch is mounted vertically, you would push the height of a rocker or push a toggle actuator increase to relocate the move to the an initial momentary on position. Friend would push the bottom that the rocker or move a toggle bottom to move the switch to the 2nd momentary ~ above position. This is a generally open (N.O.) circuit, therefore whenever you release the actuator the will instantly return come its regular at rest center OFF position, whereby all switching circuits would be opened.

## ON-ON-ON

The ON-ON-ON or gradual circuit is commonly a maintained, twin throw, three-position switch circuit. Most generally this circuit role is offered in a two-pole configuration where each pole controls a separate circuit. In this construction in the first position Circuit 2 is ON in ~ terminal 2 & 3; in the mid position Circuit 1 & 2 are ON native terminals 4 & 5 and 2 & 3 respectively; and also in the third position Circuit 1 is ON indigenous terminals 4 & 5.

If the switch is an installed vertically, friend would push the peak of a rocker or press a toggle actuator upward to relocate the switch to the Circuit 2 top top position. Friend would move the rocker or toggle actuator to the facility position to move the switch to the Circuit 1 & 2 top top position. You would push the bottom the the rocker or relocate a toggle downward to collection the switch to the Circuit 1 top top position.

The ON-ON-ON circuit can likewise be a maintained, solitary pole, triple throw, three-position switch. In this case, a jumper is usually noted between poles in ~ terminals 2 & 4 to connect the typical terminal 5 through the 3 output terminals 1, 3 & 6.

If the switch were mounted vertically, friend would push the height of a rocker actuator or press a toggle actuator upward to relocate the move to the very first ON place at terminals 5 & 6. Girlfriend would move the rocker or toggle actuator come the center position to relocate the move to the 2nd ON place at terminals 5 & 3. And also you would push the bottom of the rocker or relocate a toggle bottom to collection the switch to the third ON position at terminals 5 & 1.

## ON-ON-OFF

The ON-ON-OFF is another kind of steady circuit the is a maintained, twin throw, three-position switch circuit. Most typically this circuit duty is available in a two-pole configuration where each pole controls a separate circuit. In this construction in the first position Circuits 1 & 2 room ON in ~ terminals 5 & 6 and also 2 & 3; in the mid position Circuit 1 is ON in ~ terminals 2 & 3, and in the 3rd position both circuits space OFF.

If the switch is mounted vertically, friend would push the peak of a rocker or press a toggle actuator increase to move the switch to the Circuit 1 & 2 ~ above position. Friend would move the rocker or toggle actuator to the facility position to move the switch to the Circuit 1 ~ above position. Friend would push the bottom that the rocker or move a toggle downward to set the switch to the turn off position.

A usual application example for this type of circuit would certainly be HEADLIGHTS - to run LIGHTS - OFF.

The ON-ON-OFF circuit is also offered as a maintained, solitary pole switch in a twin pole base. In this construction Circuit 2 is on in the first position in ~ terminals 2 & 3. In the mid-position Circuit 1 is ON at terminals 1 & 2, and in the third position both circuits are OFF.

## (ON)-ON-OFF

The (ON)-ON-OFF is a third form of progressive circuit that is a momentary, double throw, three-position move circuit. Most generally this circuit role is available in a two-pole configuration where each pole controls a separate circuit. In this configuration in the very first position Circuits 1 & 2 are in the short-term ON position at terminals 5 & 6 and 2 & 3; in the mid place Circuit 1 is kept ON at terminals 2 & 3, and also in the 3rd position both circuits are OFF.

If the switch is an installed vertically, friend would press the peak of a rocker or press a toggle actuator upward to move the move to the momentary Circuit 1 & 2 on position. Once the actuator is released, it will return to the facility Circuit 1 maintained ON position. You would press the bottom the the rocker or move a toggle downward to set the switch to the off position, where both circuits would certainly be open.

A usual application instance would be off - operation ENGINE - (START ENGINE).

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## OTHER CIRCUITS

Carling Technologies provides a number of specialized circuits including reversing two position and reversing three position configurations. Specialty risk circuits and also other specialty circuits for transportation industries are additionally available. Carling additionally offers four and also eight position rotary switches. If you have devoted circuit needs, please contact your Carling modern technologies Sales Representative because that assistance.