1 pcs
Mininum order quantity from 1PCS A22N-PR21
Mininum order value from 1USD
2 days
lead time of A22N-PR21 is from 2 to 5 days
12 hours
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60 days
60 days full quality warranty of A22N-PR21
1, we will give you new and original parts with factory sealed package
2, Quality warranted: All products have to be passed our Quality Control before delivery.
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Switch Contact Ratings
Switch contacts are rated with a maximum voltage and current, and there may be different ratings for AC and DC. The AC values are higher because the current falls to zero many times each second and an arc is less likely to form across the switch contacts. A22N-PR21 Omron Electronics Inc-IA Div JOG
For low voltage electronics projects the voltage rating will not matter, but you may need to check the current rating. The maximum current is less for inductive loads (coils and motors) because they cause more sparking at the contacts when switched off. A22N-PR21 Omron Electronics Inc-IA Div JOG
Switch Contacts
Several terms are used to describe switch contacts: A22N-PR21 Omron Electronics Inc-IA Div JOG
Closed - on position, contacts conducting, there may be several on positions.
For example: the simplest on-off switch has one set of contacts (single pole) and one switching position which conducts (single throw). The switch mechanism has two positions: open (off) and closed (on), but it is called 'single throw' because only one position conducts.
Way - number of conducting positions, three or more. A22N-PR21 Omron Electronics Inc-IA Div JOG
Momentary - switch returns to its normal position when released.
Open - off position, contacts not conducting. A22N-PR21 Omron Electronics Inc-IA Div JOG
Pole - number of switch contact sets. A22N-PR21 Omron Electronics Inc-IA Div JOG
Throw - number of conducting positions, single or double.