1 Pole 12 Way SHORTING rotary switch x 2 NEW

Short guide to rotary switch contact formats

Poles and Ways

The number of poles on a switch is the same as the number of sets of contacts i.e. a 3 pole switch has 3 sets of contacts. These sets of contacts are electrically isolated from each other. The number of ways in a switch is the same as the number of electrical positions i.e. 6 way switch usually has 6 positions.

A 2 pole 6 way switch has 2 sets of independent contacts each with six positions. If for example position 4 is selected, both sets of contacts will be connected to position 4.

If you are not familiar with the connections on the switch is recommended that you check the relationship between the common connection (wiper) and the contacts with a multimeter prior to installation. Write down the connections as this may save you a lot of time later.

SHORTING or Make Before Break

These switches introduce a momentary short circuit between contacts when the switch shaft is moved from one position to another. This is a desirable feature in most applications where for example in audio systems you would not wish to here a click in the speaker when selecting different switch positions.

Shorting switches are not suitable for applications where a hazard may exist with a short between contacts. An example of this would be a meter selector switch that connects the meter to different power rails on a PSU.

NON SHORTING or Break Before Make

In this switch no short circuit is present between contacts when the shaft is turned.

These parts are more suited to higher voltage operation and other applications where isolation is required between contacts.

The shorting or make before break switch is more commonly used than the non shorting type but please check suitability before buying.

WE STOCK BOTH TYPES OF SWITCHES IN 4 DIFFERENT CONTACT ARRANGEMENTS.

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