--- product_id: 47483866 title: "- 5-pin 40/30Amp 12V DC Waterproof Automotive Relay with Heavy-Duty Wire" brand: "irhapsody" price: "¥3348" currency: JPY in_stock: true reviews_count: 9 category: "I Rhapsody" url: https://www.desertcart.jp/products/47483866-5-pin-40-30amp-12v-dc-waterproof-automotive-relay-heavy store_origin: JP region: Japan --- # 40A max switching current Water-repellent & dustproof design 12 AWG tinned copper heavy-duty wire - 5-pin 40/30Amp 12V DC Waterproof Automotive Relay with Heavy-Duty Wire **Brand:** irhapsody **Price:** ¥3348 **Availability:** ✅ In Stock ## Summary > ⚡ Drive with confidence—power that never quits! ## Quick Answers - **What is this?** - 5-pin 40/30Amp 12V DC Waterproof Automotive Relay with Heavy-Duty Wire by irhapsody - **How much does it cost?** ¥3348 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/47483866-5-pin-40-30amp-12v-dc-waterproof-automotive-relay-heavy) ## Best For - irhapsody enthusiasts ## Why This Product - Trusted irhapsody brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Heavy-Duty Wiring:** Premium 12 AWG tinned copper wire ensures superior conductivity and durability - • **Precision Switching:** SPDT design with fast 7ms operate and 5ms release times for seamless control - • **Power Through Anything:** Handles up to 40 amps for high-demand automotive needs - • **Long-Lasting Performance:** Engineered for 100,000 electrical cycles and 10 million mechanical operations - • **Built to Brave the Elements:** Waterproof and dustproof casing keeps your relay safe and reliable ## Overview This 5-pin 12V DC automotive relay delivers robust 40A switching capacity with a durable waterproof and dustproof housing. Featuring heavy-duty 12 AWG tinned copper wiring and a reliable SPDT configuration, it ensures precise, fast switching and long operational life, making it the ultimate upgrade for professional-grade automotive electrical systems. ## Description Nominal Coil Voltage: 12 V DC Coil Power: 1.8 W Coil Resistance: 80 Ω Must Operate Voltage: 6~8 V DC Must Release Voltage: 0.6~3.6 V DC Maximum Applied Voltage: 15.6 V DCContact Ratings: NO 40A 14V DC Contact Resistance: 100mMAX (at6VDC 1A) Max Switching Current: 40A Max Switching Power: 560 W Life Expectancy Electrical: 100,000 Operations (at30 Operations/minute) Life Expectancy Machanical: 10,000,000 Operations Temperature Range: -30 ~ +80 degrees Celsius Vibration Resistance: 10~55Hz, 1.5mm Shock Resistance: Operations Extremes: 10g. Damage Limits: 100g Hunidity: 40% ~ 85% Insulation Resistance: 100mΩ Min at500VDC Dielectric Strength Between Open Contacts: 500VAC (for one minute/sec) Between Contactw and coil: 750AC (for one minute/sec) Operate Tice: 7ms Release Tice: 5ms Package Content: 1 x 12VDC waterproof relay kit Review: Exactly what I needed - Time will tell if it's durable and the innards are up-to-spec, but my overall impression of this relay is extremely positive. Firstly, it doesn't feel cheap. It has a good weight and feels extremely heavy duty, with very thick plastic and a grommet that is so tight I struggled to get the two halves together (do it before wiring and/or installing or you'll almost surely have to take it back out). I seriously doubt I could get them apart. In addition to that I was surprised to see that the wire was all solid copper strands and what appears to be 12 gauge. I know it states that in the title/description, but to be honest I didn't actually expect it. Typically when corners are cut, cheap wiring is a very common place to do it. Given the HD feel, solid copper wires, and what appears to be solid waterproofing, I have no reason to believe they skimped on the inside. Also on a side note I appreciate the wiring diagrams in the item description. I have zero auto electrical knowledge but wanted to wire fog lamps up in parallel to my headlights but didn't want the lights drawing power from my headlight switch, so I T'd the power of this relay off the headlight lead and now only the relay draws power from it, as opposed to both fog bulbs. It's much much safer and should prolong the life of an expensive 45-year-old light switch. I will almost surely buy another of these when I add another external accessory. Review: electical relays for my jeep - very good service got the order fast and was exactly what I order. Highly recommend ## Features - Never go beyond its capabilities. Try to stay 10 to 15% below what the rate is for - 12-volt 5-prong (SPDT) relay. Excellent water-repellent and dustproof ability, but do not use it in water - Be careful when plugging the relay into the socket. If you push hard, you will bend the female connector - Primary leads use 12 a.w.g tinned copper wire. Coil leads use 16 a.w.g - SPDT relay: it has both normally open and normally closed terminals, terminal 87A is powered when the relay is inactive and switches the power to terminal 87 when the relay is activated ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B074QV54V1 | | Best Sellers Rank | #34,857 in Automotive ( See Top 100 in Automotive ) #37 in Automotive Replacement Accessory Power Relays | | Brand | iRhapsody | | 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, Closed | | Current Rating | 30 A | | Customer Reviews | 4.6 out of 5 stars 2,313 Reviews | | Manufacturer | IRHAPSODY | | Maximum Switching Current | 40 A | | Minimum Switching Voltage | 6 volts_of_direct_current | | Model | Relay-4V1 | | Mounting Type | Socket Mount | | Operation Mode | Automatic | | Part Number | IY-5PinRelay-1 | | Warranty Description | 1 YEAR WARRANTY | | Wattage | 1.8 watts | ## Product Details - **Connector Type:** Plug-In - **Contact Material:** Copper - **Contact Type:** Normally Open, Closed - **Current Rating:** 30 A - **Mounting Type:** Socket Mount ## Images ![- 5-pin 40/30Amp 12V DC Waterproof Automotive Relay with Heavy-Duty Wire - Image 1](https://m.media-amazon.com/images/I/71u4IdVMr7L.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: Is this solid state?** A: It has only an electromagnet (coil) which when activated pulls an armature which pulls contacts together, completing the circuit. Basically it is a switch. This is not transistorized **Q: Where are these relays made?** A: Based on the price I assume they are made in china. They are high quality. I run them on my race car and haven't had a problem. **Q: Will this relay work on a mercury force outboard 40hp 1998?** A: This is a universal 12v relay u will need to wire to it what ever you want to operate It's not a specific relay to you application **Q: How long does it take to ship** A: Few days ## Customer Reviews ### ⭐⭐⭐⭐⭐ Exactly what I needed *by G***N on September 29, 2020* Time will tell if it's durable and the innards are up-to-spec, but my overall impression of this relay is extremely positive. Firstly, it doesn't feel cheap. It has a good weight and feels extremely heavy duty, with very thick plastic and a grommet that is so tight I struggled to get the two halves together (do it before wiring and/or installing or you'll almost surely have to take it back out). I seriously doubt I could get them apart. In addition to that I was surprised to see that the wire was all solid copper strands and what appears to be 12 gauge. I know it states that in the title/description, but to be honest I didn't actually expect it. Typically when corners are cut, cheap wiring is a very common place to do it. Given the HD feel, solid copper wires, and what appears to be solid waterproofing, I have no reason to believe they skimped on the inside. Also on a side note I appreciate the wiring diagrams in the item description. I have zero auto electrical knowledge but wanted to wire fog lamps up in parallel to my headlights but didn't want the lights drawing power from my headlight switch, so I T'd the power of this relay off the headlight lead and now only the relay draws power from it, as opposed to both fog bulbs. It's much much safer and should prolong the life of an expensive 45-year-old light switch. I will almost surely buy another of these when I add another external accessory. ### ⭐⭐⭐⭐⭐ electical relays for my jeep *by D***L on May 27, 2026* very good service got the order fast and was exactly what I order. Highly recommend ### ⭐⭐⭐⭐⭐ Works *by S***N on July 2, 2026* Did what it was supposed to. Looks to be well made. Modified lights on my quad so the low beams stayed on with the high beams ## Frequently Bought Together - irhapsody 1 Pack 40/30 AMP 12V DC Waterproof Relay and Harness - Heavy Duty 12 AWG Tinned Copper Wires, 5-PIN SPDT Automotive Relay - Compliance Parts LMC5 Module - C5 Corvette steering column lock bypass module Black --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.jp/products/47483866-5-pin-40-30amp-12v-dc-waterproof-automotive-relay-heavy](https://www.desertcart.jp/products/47483866-5-pin-40-30amp-12v-dc-waterproof-automotive-relay-heavy) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-09-06*