

⚙️ Power up your ride with rugged reliability—don’t get left behind!
The MaySpare Duty Solenoid Relay is a heavy-duty, 24V SPST solenoid designed for demanding applications such as golf carts, winches, and marine equipment. Featuring a 150A continuous current rating with 300A transient capacity, copper contacts, and a sealed corrosion-resistant shell, it delivers dependable performance in harsh environments. Engineered for intermittent use with mandatory cooling breaks, this relay ensures your high-current switching needs are met without compromise.




| ASIN | B07B7FLKF1 |
| Best Sellers Rank | #89,670 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #43 in Solenoids |
| Brand Name | MaySpare |
| Coil Voltage | 24 Volts |
| Connector Type | Screw |
| Contact Material | Copper |
| Contact Type | Normally Open |
| Current Rating | 150 Amps |
| Customer Reviews | 4.2 4.2 out of 5 stars (245) |
| Manufacturer | May Spare Parts |
| Minimum Switching Voltage | 24 Volts |
| Model | US-JD4T-24V |
| Mounting Type | Panel Mount |
| Operation Mode | Off |
| Part Interchange Info | 5945-01-516-0446, 5945-00-081-9491 |
| Part Number | US-JD4T-24V |
| UPC | 662565200754 066256520075 |
| Wattage | 10.2 watts |
O**R
Great solenoid at the best price
This solenoid is being used to switch 24 vdc 140 amp power on/off to a tig torch. Activation of the solenoid (small terminals) is being done using a 400 ma 24vdc power supply with a foot switch. It works great and with the 100% duty cycle rating it stays cool. If you use this for the same thing, just be sure not to activate the coil with the high amperage, use a voltage converter or separate low amp power supply instead (as mentioned above).
M**W
Pretty good but don't short-cycle too much
For the price I can't complain much, even though one of them is already failing I mostly blame myself, and you can't find anything close to this price with prime shipping. I purchased four of these for my super old golf cart that uses resistor coils to regulate speed. Its actually a 36v golf cart, but its a junk old mad-max looking thing and I could only scrounge up two old dump truck batteries to run it, which is fine because I don't want to go super fast I just want to traverse my property and save some walking. It moves fine on 24v so thats what it gets. Now, by dropping the voltage I have surely up the amperage it draws to start and drive the cart. I have no idea if I am operating within the advertised limits of these solenoids, that is part of why I don't knock off a start for one failing. The other reason is because the one that is failing is the starting or "first gear" solenoid, the one that bears the most burden by far. Not only does this first solenoid take all the starting current from a stop, but it gets torture-cycled sometimes when you are trying to just inch the cart along or navigate slowly and precisely. The spring on my pedal is kinda weak, its easy to hit some bumps and have your foot bounce enough on it and all this adds up to a lot of rapid ON-OFF-ON-OFF-ON-OFF clickity clickity clicking, and I'm pretty sure thats what killed this one solenoid. I'm thinking of maybe using two of these in parallel for the starting circuit, as well as maybe a cheap time-delay relay module that requires the pedal to be pressed for say one full second before engaging the solenoid, to help minimize short-cycling. I probably won't go that far, but I will need to be more deliberate with my foot to make sure I am not clickity-clickity-clicking these on and off rapidly so as not to shorten their life. At some point maybe I'll get a shunt and see if my current draw is within rated limits. I am using proper high amperage slow-blow fuses and a 300 amp breaker, though, so I probably am within the limits but its just hard to say. Recommend ordering a spare to keep on hand anyways. Its not fun when the first gear solenoid fails because sadly it sticks ON, so you let off the pedal and the cart keeps going. They also stick on if your ground is bad, so just wire up carefully and treat them nice and should be fine.
D**C
well packaged
works as listed,
P**B
Solenoid stuck, caused short
Failed on the second start - solenoid stuck, causing the starter to engage without the key on. Overheated the wires and almost started a fire. I now need to replace some of the wiring harness. Thankfully, I was able to get to the battery cutoff switch quickly and my starter wasn't burnt out. I won't return it because I'm afraid it will just go back into circulation and burn up someone else's wiring. I am livid.
B**B
Working for me.
Added this to a backhoe as a battery disconnect. I've seen other reviews on similar devices who did not like it. But this one has been on this machine now for several months and is working fine.
A**R
A great
terminals are not an exact match to my Caterpillar D4 Dozer ignition switch but close enough. A great deal
V**N
Local auto parts didn't have it in stock (24V)
It's a very good price and I bought one for a spare.
N**N
My mistake but still works
It may not last very long because I wasn't paying attention to the voltage I ordered the 24 volts by mistake. It still works on 12 and if it doesn't last long I have no one to blame but me.
Y**N
Parfait pour la pêche pour remonter la pesée
R**D
Works as it should
J**N
I used this to replace the switch on the hydraulic pump on a scissor lift. works great
E**E
Correct size and was a direct replacement for the oem solenoid
K**.
One year in and still working fine! Bought these to replace the fan relays on a 1999 prevost bus. Still working fine!
Trustpilot
Hace 1 día
Hace 1 mes