40a/30A 12v Solenoid-Would Like Explination
Oct 1, 2014 | 02:01 AM
#4
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From: Baton Rouge, LA
Bumping an old post for the info-
The 40A is the maximum surge (less than 1 second) and the 30A is the rated load at 12v. Think of kicking on a fan motor or something with a hefty starting load.
I would not trust that rating for cheap Chinese relays though, think more along the lines of a 30A surge rating and a 25A continuous load. The contactors are very shoddy material and generate a lot more heat than a quality Hella or Bosch relay.
The 40A is the maximum surge (less than 1 second) and the 30A is the rated load at 12v. Think of kicking on a fan motor or something with a hefty starting load.
I would not trust that rating for cheap Chinese relays though, think more along the lines of a 30A surge rating and a 25A continuous load. The contactors are very shoddy material and generate a lot more heat than a quality Hella or Bosch relay.
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