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โก Power up your ride with the Max 300Aโwhere durability meets peak performance!
The Max 300A 12V Duty Solenoid Relay is a heavy-duty, 4-terminal electromagnetic switch designed for golf carts, winches, and marine applications. Featuring a nickel-plated cover and high-temp copper coil, it supports a maximum transient current of 300 amps and continuous operation up to 150 amps, optimizing battery efficiency and reducing power loss. Compatible with multiple OEM parts and mounted via a sturdy bracket, it offers reliable, long-lasting performance backed by a 1-year warranty.















| Asin | B0BDFBCVRP |
| Best Sellers Rank | #8,246 in Automotive (See Top 100 in Automotive) #2 in Automotive Replacement Starter Solenoids |
| Brand Name | LDMINDA |
| Coil Resistance | 14 ohm |
| Coil Voltage | 12 volts |
| Contact Current Rating | 150 A |
| Contact Material | Copper |
| Contact Type | Spst |
| Current Rating | 300 A |
| Customer Reviews | 4.1 4.1 out of 5 stars (327) 4.1 out of 5 stars |
| Included Components | washer |
| Item Type Name | Solenoid Relay |
| Manufacturer | LDMINDA |
| Minimum Switching Voltage | 12 volts_of_direct_current |
| Model | 12V 4 Terminal Max 300A |
| Mounting Type | Bracket Mount |
| Operation Mode | Automatic |
| Part Number | 3635820 ,1114208,1114218 |
| Specification Met | Electromagnetic |
| Unit Count | 1 Count |
| Warranty Description | 1 year warranty |
| Wattage | 10.2 watts |
User
Great for high amp cooling fans!
I own a custom automotive shop, and I've used these 12V continuous duty solenoids on multiple custom builds with excellent results.I primarily use them to power high-amp electric cooling fans, especially on LS and Coyote swaps. I've also used them to power electric A/C compressors without any issues. In my experience, even quality Bosch-style 4-pin relays can eventually fail when they're exposed to constant under-hood heat in the Texas summer. These continuous duty solenoids have proven to be a much more reliable option for high-current accessories that see long run times.If you're running A/C fan controls, I highly recommend pairing the solenoid with a 3-wire diode. It keeps the circuit working correctly and prevents unwanted feedback, while allowing the solenoid to run cool even during extended operation.The build quality has been excellent, they're simple to wire, and they've been dependable across several customer builds. If you need a heavy-duty relay solution for electric fans, electric A/C compressors, or other high-current loads, these are a great choice and have earned a permanent place in my shop.
User
works
nice set should get the job done
User
NOT AS ADVERTISED
Misrepresented as a continuous duty solenoid. NOT AS ADVERTISED. This is NOT a continuous duty solenoid. I ordered 3 of these for a robotics project as a battery contactor. The project was delayed and when it was restarted it was beyond the warranty phase so I couldn't return them. I opened the boxes only to find each one labeled with a sticker stating. "This solenoid is a STARTER solenoid. CONTINUOUS WORK IS 5 MINUTES. MUST COOL DOWN. If long work no stop will be HOT and cause short-circuit or fire."
User
Sturdy casing and contacts
Sturdy casing wonโt melt like the oem plastic casing on my zero turn.
User
Solenoid
Works great
User
Great product
Great product good price
User
50% refund
My order was for 2 but order was doubled in error and two were returned but only got credit for one. Solenoid works find and I carry a spare.
User
Good quality
Great product and easy to use
User
Merci.
trรจs satisfait
Trustpilot
2 weeks ago
1 month ago