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Item #:
190362015
4-pin 40/30AMP 12VDC Waterproof Relays, Built-in Diode, SPST Automotive Relay Kit
Item #:
190362015
USD 21
Price Details
Excluding Shipping & Custom charges ( Shipping and custom charges will be calculated on checkout )
*All items will import from US
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Imported from USA store
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Order now and get it around Friday, August 14
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Excellent water-repellent and dustproof ability.
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Note: Step 1 Voltage Transformer required for using electronics products of US store (110-120). Recommended power converters Buy Now.
What Stands Out
Waterproof Design
Specifically engineered to resist water and moisture, ensuring durability and reliability in outdoor automotive applications.
Built-in Diode
Incorporates a built-in diode to protect against voltage spikes, enhancing circuit longevity and performance during operations.
High Current Rating
Supports both 40AMP and 30AMP ratings at 12VDC, making it versatile for various automotive and electronic applications.
Product Details
| Connector Type | Plug-In |
| Contact Type | Normally Open |
| Current Rating | 30 Amps |
| Mounting Type | Socket Mount |
| Operation Mode | Automatic |
| Wattage | 1.8 watts |
| Coil Resistance | 80 Ohms |
| Coil Voltage | 12 Volts (DC) |
| Contact Current Rating | 40 Amps |
| Minimum Switching Voltage | 6 Volts (DC) |
| Specification Met | IP67 |
| Brand Name | iRhapsody |
| Part Number | 4PIN12VWFrelay40A2Pdiode |
| Model | Relay-JLW |
| Unit Count | 2.0 Count |
| Manufacturer | IRHAPSODY |
| Contact Material | Copper |
| Country of Origin | This item will be imported from US |
| What is in the box | 4-pin 40/30AMP 12VDC Waterproof... For more details, please check description/product details |
| Item Weight | 0.5 lbs (230 grams) |
| Date First Available | December 03, 2025 |
Who Should Buy?
-
Automotive Enthusiasts
Ideal for users seeking reliable relays for various car modifications and setups to control electrical components.
-
DIY Projects
Perfect for hobbyists creating custom electronics or automotive projects requiring robust and waterproof relay solutions.
-
Marine Applications
Great for boat owners needing reliable, waterproof relays for lighting, pumps, and other accessories in moist environments.
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High-Power Systems
Not suitable for applications requiring relays with higher-than-rated amperage, risking overheating and failure.
Product Description
4-pin 40/30AMP 12VDC Waterproof Relays, Built-in Diode, SPST Automotive Relay Kit
Have any Query? Chat with us
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 irhapsody 4-pin 40/30AMP 12VDC Waterproof Relay Kit has made a positive impression on users, receiving high marks for its quality, functionality, and ease of installation. Customers highlight the relay's waterproof feature, which allows it to perform reliably even in adverse weather conditions, making it ideal for automotive applications. The clear and straightforward instructions facilitate a hassle-free setup, earning it praise for being user-friendly, even for those who may not have extensive electronic experience. Users have employed this relay for various purposes, from powering air horns to converting power windows and fixing reverse camera issues. The relay is noted for its robust Construction, with durable wire leads and waterproofing elements reinforcing customer confidence in its longevity and reliability. Some experienced users specifically appreciate the relay's efficiency at restoring voltage lost in older vehicle wiring, a critical feature for maintaining reliable accessories. While a few users mentioned the size as slightly larger than expected, it did not deter their overall satisfaction. Although some feedback touched on minor quirks, such as the absence of an audible click when activated, the overwhelmingly positive reception emphasizes the relay's effectiveness and value for both professionals and hobbyists alike. In short, the product appears to meet most users' expectations, providing solid performance and durability for a variety of automotive needs. **
Customer Reviews & Ratings
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Pros
- Waterproof Construction ensures reliability in adverse weather.
- Easy installation with clear instructions, suitable for all skill levels.
- Durable 12-gauge wire leads contribute to overall quality.
- Versatile for various applications (air horns, power windows, reverse cameras).
- Performs well in restoring voltage in older wiring systems.
Cons
- Larger size than expected by some users.
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
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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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- 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 Friday, August 14
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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