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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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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