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： 

• 你说的不就是标准继电器吗？ -Oneshotkill- ♂ (330 bytes) () 09/14/2015 postreply 17:58:05

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

• 汽配店啊！几刀一个 -Oneshotkill- ♂ (0 bytes) () 09/14/2015 postreply 18:11:30

• just checked ebay for 5 terminal relays, this one sounds like -老生长谈- ♂ (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 -白云青山- ♂ (0 bytes) () 09/14/2015 postreply 18:14:01

• 感谢以上各位 ：）but challenging to find the right current rating -老生长谈- ♂ (484 bytes) () 09/14/2015 postreply 18:19:40

• 你就不会买个车用的12v200A的再接个12v的小继电器(要开要关都有)？2个加起来也不到10块 -味苦- ♂ (0 bytes) () 09/16/2015 postreply 14:24:39

• 那是我的最后一招。不过哪有那么便宜？我看到的$24左右。 -老生长谈- ♂ (111 bytes) () 09/17/2015 postreply 18:10:32

• 买了个12v 200a continuous NC relay $22 -老生长谈- ♂ (25 bytes) () 09/18/2015 postreply 08:24:33

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

• 我一开始看了这个，它是个starter relay, 不说continuous 量，不敢冒险 -老生长谈- ♂ (216 bytes) () 09/18/2015 postreply 18:36:18

• 启动电流是正常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，连续电流要175A，不是1A。1A是控制电流 -老生长谈- ♂ (0 bytes) () 09/19/2015 postreply 17:34:53

• 这么便宜的东西并2个3个又何妨？ -味苦- ♂ (0 bytes) () 09/20/2015 postreply 14:09:31

• 太阳能的东西都是虚功率， 一般有个 1/4就不错了 -味苦- ♂ (0 bytes) () 09/20/2015 postreply 14:22:19

• 非也。太阳能给电池充电。电池放电时电流很大，我烧过150a的fuse，175a ok -老生长谈- ♂ (0 bytes) () 09/20/2015 postreply 19:41:04