These series are double stable steady states products, and its advantage is to use the permanent
magnet to keep the state of the contacts. When the contacts state need to be alternated (e.g. from open to
close or from close to open), it can work just through the pulse current put on the coils, and it allows the
time of energizing to be less than 1 second. When the coils are interrupted, the contacts will keep the state
of open or close. There are two coils, and two ways of connection: one is series connection, to control the state
through the poles of current; another way is to use two circuits, one coil controls close state, and anther
controls open state. Latching contactors mix the normally-open and normally-close contact together, so as to
provide more options to customers. This product is the patent product of Tianyi Company; the Patent Ref. No. is ZL01230931.1.
The main application is in the program controlled power supply and uninterrupted power supply. The design standards are
followed by:
Standard YD/T512-92 《 Technical Requirements for Telegraph Power Supply System 》
Standard JB3974-198 《 Basic Technical Requirements for DC Device of Battery Vehicle 》
Standard ZBK63002-1998 《 Basic Technical Requirements for Traction Device 》
Standard GB14048.4-1993 《 Low voltage Contactor and Motor-starter 》
