Question 1

Id like to mount this in a metal outlet box but how do i isolate the relay contacts on the back of relay from the metal outlet box?

Accepted Answer

First, it is good to hear that you are aware of the need.  Yes, you can do it easily or more accurately.  the easy way is to use 2 or 3 foam pads stacked on each other and attach to the back and then the metal box.  This is a once and done method.  The more service able way is to get some small 1" long bolts that will fit into the 4 holes on the corners, and bolt it to the metal box, using a piece of cardboard or stiff material to attach on the back and use 1/2" spacers or nuts to assure that the back of the PC board is above the  metal back at least 3/8".

Question 2

Can this relay be used with a Arduino Uno or Nano?

Accepted Answer

Not directly. This relay requires 12v to switch. Arduino only handles 5v. You can use a transistor but the simplest solution is to find a 5v version

Question 3

Can you use relay be used to switch my dc power from my solar panels to ac to my water heater element

Accepted Answer

I believe it can. I used mine to start a sup pump in the basement in case water flooded the place. I wired to a sensor float and then to the pump. I have a 12 volt battery to provide the power for the switching.

Question 4

says 30A @240, so can I put 15A @110v load on this ?

Accepted Answer

As the electrical theory goes: Watts = Amps x Volts
Examples:
10 Amps x 120 Volts = 1200 Watts
5 Amps x 240 Volts = 1200 Watts
So when you do math you will find that 65.4545~ Amps x 110 Volts = 7200 Watts.  Which is the same amount of Watts when you do the math 30 Amps x 240 Volts = 7200 Watts.  So 15A at 110 volts would be barely using the capacity of this relay.  I hope this helps you.

ASIN	B00MKWACVI
Best Sellers Rank	#1,210,585 in Automotive ( See Top 100 in Automotive ) #455 in Automotive Replacement Relay Control Module Relays
Brand	Yeeco
Brand Name	Yeeco
Coil Voltage	12 volts
Connector Type	Through Hole
Contact Current Rating	30 A
Contact Material	Silver Alloy
Contact Type	Normally Open
Current Rating	30 A
Customer Reviews	4.4 out of 5 stars 211 Reviews
Item Weight	9.07 g
Manufacturer	Yeeco
Maximum Switching Current	30 A
Minimum Switching Voltage	12 volts_of_direct_current
Model	1300199
Mounting Type	DIN Rail Mount
Number of Items	1
Number of Packs	1
Operation Mode	12v,Electrical
Part Number	Y1300199
Specification Met	IEC/EN 60947
UPC	701203237612 070120323761
Unit Count	1 Count

Yeeco® 30A High Current 12V Contactor Relay Switch Power Switch DC Power Switching Control Board Control Module Electrical Relay Switches for Cooler Heater Refit Water Heater Control

Details

Details

Description

Specifications

Common Questions