Are these made in the USA?

I never checked. But, I doubt it.

In a car, is the dc ground the same as the dc negative?

DC ground and DC negative, chassis ground, are the same thing, a direct connection to the battery negative terminal. The metal body of the car, frame, sheet metal, engine block etc are all connected together and connected to the negative battery cable .

Need this in a 24v coil version with a flyback diode or resistor preinstalled. link?

Hi, This product is for your reference: https://www.amazon.com/dp/B07L2H67BN?ref=myi_title_dp

Are these suitable for continuous duty?

I use mine for auto radiator fan control, the fan runs continuously in traffic during the summer. No issues.

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

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4-pin 40/30Amp 12V DC Waterproof Automotive Relay with Heavy-Duty Wire

4-pin 40/30Amp 12V DC Waterproof Automotive Relay with Heavy-Duty Wire

Product ID: 226556587

Details

Connector Type
Plug-In
Contact Material
Copper
Contact Type
Normally Open
Current Rating
40 A
Mounting Type
Socket Mount

⚡40A max switching current

💧Waterproof & dustproof design

⏱️Ultra-fast 7ms operate time

70.72 DT

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Description

⚡ Power up your ride with relay speed and strength that won’t quit!

PLUG PLAY SIMPLICITY - Comes with 7-inch heavy-gauge tinned copper wires and a socket mount for hassle-free installation.
BUILT TO BRAVE THE ELEMENTS - Water-repellent and dustproof casing keeps your relay safe in tough environments (just no full submersion!).
SPEED THAT KEEPS YOU MOVING - Lightning-fast 7ms operate and 5ms release times ensure instant response when it matters most.
POWER THROUGH WITH CONFIDENCE - Handles up to 40 amps for heavy-duty automotive demands without breaking a sweat.
DURABILITY THAT OUTLASTS THE ROAD - Engineered for 100,000 electrical cycles and 10 million mechanical operations—reliability you can count on.

The iRhapsody 4-pin 12V DC automotive relay delivers a robust 40A switching capacity with waterproof and dustproof protection. Designed for high durability, it offers ultra-fast 7ms operation and a long lifespan of 100,000 electrical cycles. Equipped with heavy-duty 12 AWG tinned copper wires and a socket mount, this relay ensures reliable, professional-grade performance for demanding automotive applications.

Specifications

ASIN	B08D8TSMFV
Best Sellers Rank	#5,076 in Automotive ( See Top 100 in Automotive ) #2 in Automotive Replacement Accessory Power Relays
Brand Name	iRhapsody
Coil Resistance	80 ohm
Coil Voltage	12 volts
Connector Type	Plug-In
Contact Current Rating	30 A
Contact Material	Copper
Contact Type	Normally Open
Current Rating	40 A
Customer Reviews	4.7 4.7 out of 5 stars (999)
Manufacturer	IRHAPSODY
Maximum Switching Current	40 A
Minimum Switching Voltage	6 volts
Model	Relay-MFV
Mounting Type	Socket Mount
Operating Time	0.01 seconds
Operation Mode	Automatic
Part Number	4PIN12VRelay40AWF1P
Warranty Description	1 year
Wattage	1.8 watts

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70.72 DT

Duties & taxes included

In stock

Sold byAmazon TunisiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Tunisia.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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