does anyone know the name of a relay "disconnect when power on"?

looking for a disconnect relay but don't know its english name.

how it works - when the signal power is on, the switching (main) power is to be off.  when signal power is turned off, the main power should be back to connected.  12v 1a.

 

thanks.

所有跟帖： 

• 你說的不就是標準繼電器嗎？ -Oneshotkill- ♂ (330 bytes) () 09/14/2015 postreply 17:58:05

• your photo shows 5 terminals, there is a NC. -老生長談- ♂ (142 bytes) () 09/14/2015 postreply 18:07:32

• 汽配店啊！幾刀一個 -Oneshotkill- ♂ (0 bytes) () 09/14/2015 postreply 18:11:30

• just checked ebay for 5 terminal relays, this one sounds like -老生長談- ♂ (272 bytes) () 09/14/2015 postreply 18:18:16

• normally closed (NC) relay -民工- ♂ (0 bytes) () 09/14/2015 postreply 18:12:17

• Relay, normally close -白雲青山- ♂ (0 bytes) () 09/14/2015 postreply 18:14:01

• 感謝以上各位 ：）but challenging to find the right current rating -老生長談- ♂ (484 bytes) () 09/14/2015 postreply 18:19:40

• 你就不會買個車用的12v200A的再接個12v的小繼電器(要開要關都有)？2個加起來也不到10塊 -味苦- ♂ (0 bytes) () 09/16/2015 postreply 14:24:39

• 那是我的最後一招。不過哪有那麽便宜？我看到的$24左右。 -老生長談- ♂ (111 bytes) () 09/17/2015 postreply 18:10:32

• 買了個12v 200a continuous NC relay $22 -老生長談- ♂ (25 bytes) () 09/18/2015 postreply 08:24:33

• Black Plastic Car Automotive Heavy Duty 12V DC Relay 200A Automo -白雲青山- ♂ (144 bytes) () 09/18/2015 postreply 11:36:28

• 我一開始看了這個，它是個starter relay, 不說continuous 量，不敢冒險 -老生長談- ♂ (216 bytes) () 09/18/2015 postreply 18:36:18

• 啟動電流是正常3倍，就是除以3也是你要求1A的60倍 -味苦- ♂ (0 bytes) () 09/19/2015 postreply 09:15:44

• 不是啊，連續電流要175A，不是1A。1A是控製電流 -老生長談- ♂ (0 bytes) () 09/19/2015 postreply 17:34:53

• 這麽便宜的東西並2個3個又何妨？ -味苦- ♂ (0 bytes) () 09/20/2015 postreply 14:09:31

• 太陽能的東西都是虛功率， 一般有個 1/4就不錯了 -味苦- ♂ (0 bytes) () 09/20/2015 postreply 14:22:19

• 非也。太陽能給電池充電。電池放電時電流很大，我燒過150a的fuse，175a ok -老生長談- ♂ (0 bytes) () 09/20/2015 postreply 19:41:04