Build you own Charging Station for about $375

[valerun]

Same relay for less. The spec. sheet says 100 milliohm contact resistance, that is 160 watts at 40 amp and 640 watts at 80 amps. Figures they would use a relay that cost them less the $5. A SquareD 75 amp relay costs $100.

http://www.aliexpress.com/item/JQX-62F-2Z-80A-DPDT-DC-12V-Coil-Electromagnetic-Power-Relay/468483981.html

this just tells you that you shouldn't just trust the spec sheets blindly - especially those Chinese ones ;-) do you REALLY think we would use a relay dissipating 160 watts at 40 amps in our 60A-rated product?

 

[Stan]

Is the relay being overloaded?

Carefully read the graph at the lower left of the specification sheet posted at:

http://soll.en.alibaba.com/product/1385916472-220323770/Power_Relay_High_Power_Relay_JQX_62F_2Z.html
or
http://emotorwerks.com/JuiceBox_Public/99%20-%20Supporting%20materials/JQX-62F%20Power%20Relay.pdf

Specifically, look at the graph at the bottom left that is labeled "Max Operating Power". According to the "Max Operating Power" graph in the specification sheet, the relay is only capable of supporting 28A continuously, in spite of being capable of handling 80A peak current according to the ratings in the text further above in the specification sheet. Wouldn't this relay be overloaded if used in a EVSE rated at 60A, which is a continuous load?