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Item #:
220465218
4-pin 40/30Amp 12V DC Waterproof Automotive Relay with Heavy-Duty Wire
85% of respondents would recommend this to a friend
Item #:
220465218
USD 21
Price Details
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Imported from USA store
QTY:
Order now and get it around Tuesday, September 08
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Excellent water-repellent and dustproof ability.
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What Stands Out
Heavy Duty Wires
Equipped with robust, durable wires, this relay ensures reliable performance in automotive applications, providing enhanced safety and minimizing the risk of electrical failures.
Waterproof Design
Designed to withstand harsh conditions, the waterproof construction protects internal components, making it ideal for outdoor or off-road vehicle use, ensuring longevity and consistent operation.
SPST Configuration
With a Single Pole Single Throw (SPST) setup, this relay simplifies electrical circuits in vehicles, allowing for easy control over high-current devices, enhancing functionality and efficiency.
Product Details
| Connector Type | Plug-In |
| Contact Type | Normally Open |
| Current Rating | 30 A |
| Mounting Type | Socket Mount |
| Operation Mode | Manual |
| Wattage | 1.8 watts |
| Coil Resistance | 80 ohm |
| Coil Voltage | 12 volts_of_direct_current |
| Contact Current Rating | 40 A |
| Minimum Switching Voltage | 12 volts_of_direct_current |
| Specification Met | UL |
| Brand Name | iRhapsody |
| Unit Count | 2 Count |
| Manufacturer | IRHAPSODY |
| Model | Relay-RHP |
| Part Number | 4PIN12VWFrelay40A2P |
| Contact Material | Copper |
| Item Weight | 1 lbs (450 grams) |
Who Should Buy?
-
Automotive Enthusiasts
Ideal for car modifications requiring dependable relays for lights, audio systems, or other power accessories.
-
Marine Applications
Perfect for boats needing waterproof components to ensure reliable electrical connections in wet environments.
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DIY Projects
Great for hobbyists building custom electrical projects who need a robust relay for controlling various devices.
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High Power Equipment
Not suitable for applications requiring over 40 AMP or high voltage operation beyond its rated limits.
Product Description
4-pin 40/30Amp 12V DC Waterproof Automotive Relay with Heavy-Duty Wire
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Customer Questions & Answers
-
Question:
What is the maximum capacity for this relay?
Answer: Do not exceed 40AMPS; it's recommended to stay 10 to 15% below the maximum rate. -
Question:
Is this relay suitable for outdoor use?
Answer: Yes, it has excellent water-repellent and dustproof capabilities but should not be submerged in water. -
Question:
Can I use this relay for both positive and negative systems?
Answer: Yes, the relay is designed to work with both positive and negative activation.
iRhapsody Accessory Power Editorial Review
The 4-pin 4030AMP 12V DC Waterproof Relay has garnered a positive reception among users, particularly for its durability and ease of installation. Many customers appreciate the waterproof feature, which is crucial for automotive applications, and the heavy-duty nature of the build, suggesting that it is designed to withstand harsh conditions. Users also noted that the gauge of the wires, while not fully copper, still performs well and meets their expectations. Installation appears to be straightforward, with positive feedback on the clarity of the instructions, although more detailed guidance is readily available online. This has made it a preferred choice for various applications, such as power window conversions and as a "hard start" relay in classic vehicles. While some users mentioned the absence of an audible click when activated, this hasn't affected their overall satisfaction with the product, as it operates effectively and does what it was designed for. Overall, this relay offers excellent value for money, particularly for those with weather-sensitive automotive projects. **
Customer Reviews & Ratings
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Pros
- Waterproof design for durability in harsh conditions
- Heavy-duty Construction
- Easy to install with clear instructions
- Generous wire length for flexibility in installation
- Performs well despite wires not being 100% copper
Cons
- No audible click when activated, which some users noted
Platform Trust & Buyer Confidence
MA
Mohammad
Verified buyer
“Excellent quality and original too,when ubuy send original things I will appreciate that ,I very satisfied thank you”
23 July 2026 · via Trustpilot
CK
Chitra
Verified buyer
“The order and delivery progress was communicated very well. Package arrived within the estimated time. Products arrived as expected in good condition.”
22-Jul-26 · via Trustpilot
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kund
Verified buyer
“Good supply of products. Safe payment methods, and shipment worldwide! Genuine products.”
23-Jul-26 · via Trustpilot
OO
Onesi
Verified buyer
“Was my first time buying a product from Ubuy, but I found it so helpful. This is reliable. Gonna place a new order!”
22 July 2026 · via Trustpilot
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SAO JOHN
Verified buyer
“Ubuy is a great online platform to buy stuff. Reliable, fast delivery time and great value for money. I've been using Ubuy online shopping platform for three years now and will continue to do so.”
23 July 2026 · via Trustpilot
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Important information
- Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
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USD 21
Order now and get it around Tuesday, September 08
This item is not restrict in my country.(Please click on above link if this item is not restrict in your country, So our team will review and allow.)
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Features & Benefits
- 4-pin 40/30AMP 12VDC waterproof relay kit.
- Built-in diode for added reliability.
- SPST configuration for versatile applications.
- Thick 12 gauge wire ensures durability.
- Easy installation with provided wiring diagram.
- Compatible with both positive and negative activation.
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