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MEXICOWANDERER's avatar
MEXICOWANDERER
Explorer
Apr 17, 2015

The New Generation Of 12-Volt DC Relays



http://www.ebay.com/itm/New-Solid-State-Relay-SSR-40-DD-DC-DC-40A-3-32VDC-Input-5-60VDC-Output-for-Y5RG-/371290954044?pt=LH_DefaultDomain_2&hash=item5672aa593c




http://www.ebay.com/itm/Aluminum-Heat-Sink-for-Solid-State-Relay-SSR-Small-Type-Heat-Dissipation-10A-40A-/200957657490?pt=LH_DefaultDomain_0&hash=item2eca028192


Inexpensive. Zero contacts to corrode or burn. Control voltage can be miniscule down to three volts. Can be fifty feet away from switch using 18-gauge wire. If mounted with care, sharing an equal load manifold wiring split I have paired these critters and shot 70-amps through them for weeks at a time. Voltage drop is in milliamps. But they must be fused. I recommend 35-amp fuses.

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  • HTElectrical's avatar
    HTElectrical
    Explorer
    Apr 18, 2015
    They have 24V-380V 40A 250V SSR-40 DA Solid State Relay Module 3-32V DC To AC also.
    Do you have to use the heat sink?
    DC - Ac
  • MEXICOWANDERER's avatar
    MEXICOWANDERER
    Explorer
    Apr 17, 2015
    These are DIRECT CURRENT ONLY relays.

    Both the control and POWER circuits can not control alternating current only DC.

    These things are encapsulated. No corrosion. The external terminals are nickel plated.

    They activate and remain on with few scant milliamps of power. A TYCO relay uses around 80ma of power for the coil. These things use around 5 ma.
  • Old-Biscuit's avatar
    Old-Biscuit
    Explorer III
    Apr 17, 2015
    MEXICOWANDERER wrote:
    A DC powered water heater? Man you gotta have onehellofa battery bank!


    Not when you are just using the DC to turn AC to electric element ON/OFF.

    Atwood WHs have been that way for 11 yrs.
  • Toddupton's avatar
    Toddupton
    Explorer
    Apr 17, 2015
    Not really new. I have been using these for years in commercial food service equipment. I also used one of these to switch my electric water heater on and off from my control panel. Made running wire so much easier. Love them for a lot of projects.
  • popeyemth's avatar
    popeyemth
    Explorer
    Apr 17, 2015
    Why does the listing description refer to disassembling a cell phone?
    Thanks,Mike

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