Contact Parameters 1.1      Contact forms are the arrangements of relay contacts. The basic contact arrangements are shown in Table 1, the multi-contact arrangements can be ratiocinated. Table 1 Name Symbol Alphabet Letter China TIANYI or Others Normally Open Contacts H A (or NO) Normally Closed Contacts D B (or NC) Change-Over Contacts Z C (or […]

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In order to correctly select relays, customers need know the characteristics of the relays to ensure whether these characteristics meet with the practical requirements. It will be more reliable if these characteristics can be tested in the practical environment. The principles of selecting relays can be seen in table 4. In table 4, in the […]

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To properly use the relay, when the relay is selected and its characteristics are learnt, the precautions for using are required to be known and ensure the reliable operation of the relay. The following precautions will be considered in application: a) The relays are used within the range of the parameters listed in the catalogue, […]

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Generally speaking, relays are switches that run on electric signals. An electronic relay operates by closing or opening a switch on receipt of a signal. If you consider relay buy online, you will get either complex semiconductor arrays without any movable components or easy to operate mechanical switches. Relays play a critical role in protecting […]

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