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The MaySpare 80-Amp 12V Continuous Duty Solenoid Relay is a high-current battery isolator designed for trucks, boats, and RVs. Featuring silver-plated copper contacts, it supports continuous 80A current with surge capacity up to 150A, and boasts a 100,000-cycle mechanical lifespan. This relay protects your starting battery while running auxiliary systems, ensuring seamless automatic switching and long-term durability.
| ASIN | B07MV4WJ7K |
| Best Sellers Rank | #30,795 in Automotive ( See Top 100 in Automotive ) #7 in Automotive Replacement Starter Solenoids |
| Brand | MaySpare |
| Brand Name | MaySpare |
| Coil Resistance | 18 ohm |
| Coil Voltage | 12 volts |
| Connector Type | Screw |
| Contact Current Rating | 80 A |
| Contact Material | Copper Silver |
| Contact Type | Normally Open |
| Current Rating | 80 A |
| Customer Reviews | 4.5 out of 5 stars 472 Reviews |
| Manufacturer | May Spare Parts |
| Maximum Switching Current | 1 A |
| Minimum Switching Voltage | 13 volts_of_direct_current |
| Model | US-4t500A |
| Mounting Type | Screw Mount |
| Operation Mode | Continuous Duty |
| Part Interchange Info | SGP38,6C017,120-901,120-105751,120-105751-6,120-901S1 |
| Part Number | US-4t500A |
| Specification Met | OEM |
| UPC | 754111153130 |
| Upper Temperature Rating | 80 °C |
| Wattage | 2000 watts |
A**R
good value for the money
works as described
D**N
Works great
Works great
B**R
Good product
Came quickly and same dimensions as OEM.
J**K
Great quality product
Great product
P**X
Cheap
Don't last
D**D
Work for glowplugs
Worked for 1984 ranger 2.2 diesel
J**R
Definitely not for continuous duty
Might work as an intermittent solenoid, but it’s definitely not for continuous duty. I tested it with no load, after 15 minutes it was so hot you couldn’t pick it up. Boxed them back up and sent them back to China.
S**D
Good value
easy to install & works fine
P**G
Good value
Has so far worked just fine.
C**N
corrosion of connectors
Works great but connectors rusted up over time and could not remove nuts to change wire, had to buy a new one because the bolt twisted loose while trying to remove nut. I suggest some grease to protect from corrosion if putting this on a vehicle.
A**X
This unit comes with positive and negative post
Works great. It comes with positive and negative post to activate. The location where it is in my unit is all rusted so I did a plastic lining and required to run ground cable to the unit.
A**R
Works good
Used this to supply switched power to a fuse panel in a golf cart and it has been working perfectly for several months
M**.
Exactement
Permet de charger la batterie de mon vr via l'alternateur du camion. L'original ne fonctionnait plus à cause de la corrosion. Je n'ai pas essayé de démarré le moteur avec la batterie du vr, donc je n'ai aucune idée s'il peut suporter l'amperage surtout en température froide.
Trustpilot
1 week ago
1 month ago