Hi guys. I've bought NEC EA2-5NU relay that I planned to use in a muting circuit for my preamp. This one should be great for audio. However I have a problem with it. When I apply 5 volts to coil I can hear soft clicking but nothing changes with connections. NC contacts stay closed and NO contacts stay open. I tried running it through NPN transistor and directly from 5v power source and in both cases results are the same. One thing is when I first plugged it in, I accidentally reversed polarity of the coil. Can it be that it killed relay (bent contacts inside or something) or am I just doing something wrong?
You may have a latching type, where the coil polarity must be reversed to latch/unlatch.
http://www.mouser.com/ds/2/212/KEM_R7001_EA2_EB2-541006.pdf
Ok, problem is kinda solved. I've checked datasheet 10 times and I for sure have non-latching type. I tried today to apply voltage in reverse polarity and it magically started working as it should. I checked datasheet 10 times again and it seems that there is a mistake in it or they made view from bottom which also seems weird to me. I've checked polarity of my supply and sure that everything is right.
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