--- product_id: 89349881 title: "WINJUN 4Pin Auto Starter Relay 12V DC 500 Amp Vehicle SPST Contactor Double Batteries Isolator Control On/Off Switch, Heavy Duty, High Current, with Connection Accessory" brand: "winjun" price: "€ 61.93" currency: EUR in_stock: true reviews_count: 8 url: https://www.desertcart.sk/products/89349881-winjun-4pin-auto-starter-relay-12v-dc-500-amp-vehicle store_origin: SK region: Slovakia --- # WINJUN 4Pin Auto Starter Relay 12V DC 500 Amp Vehicle SPST Contactor Double Batteries Isolator Control On/Off Switch, Heavy Duty, High Current, with Connection Accessory **Brand:** winjun **Price:** € 61.93 **Availability:** ✅ In Stock ## Quick Answers - **What is this?** WINJUN 4Pin Auto Starter Relay 12V DC 500 Amp Vehicle SPST Contactor Double Batteries Isolator Control On/Off Switch, Heavy Duty, High Current, with Connection Accessory by winjun - **How much does it cost?** € 61.93 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/89349881-winjun-4pin-auto-starter-relay-12v-dc-500-amp-vehicle) ## Best For - winjun enthusiasts ## Why This Product - Trusted winjun brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Description Features: *High 500A coil capacity- able to handle those high current applications with ease *Hundreds of uses include- starter kills, domelight supervision, trunk release, polarity change,power door lock/actuator control. *change a low current output to high current,add ignition/accessory outputs, control motors/other electronics, *Suitable for automobile used for control, alarms, horn, headlight and more.... Contact Specification: Contact Material: AgSnO12 Contact Form: Open 1H Contact Rating: NO: DC12V-500A Max Switching Current:550A Max Switching Voltage: 14V Max Switching Power:7700W Coil Specification: Nominal Voltage: 12V Coil Resistance(W): 7.2W-20Ω Max Operate Voltage(VDC): 6.8V-8.5V Mix Release Voltag(VDC): 1.2V-3.5V Max Applicable Voltage(VDC): 14V Package included: 1 x 12V 500A Relay; 4 x Silver Terminal Connectors; 4 x Gold Terminal Connectors; 4 x Red Insulator; 4 x Heat Shrink Tube; 3 x Zip Ties; 1 x Instruction Manual. ## Features - About this item - High Current Protection: 12V DC (Max Voltage 14V ) SPST Relay.500A High Current Carrying Capacity. Ensuring heavy current can be transited safely. - Waterproof and 4 Pins : Excellent waterproof performance, high quality in any weather conditions. It attaches with pin 30, pin 5, pin 86, pin87. - Heavy Duty and Durable: A heavy duty Relay can Make Your Work Safer and More Efficient.Heavy Duty Construction for Enhanced High Temperature Durability - Compatibility: The relay is an automatic switching element with isolation function, which is widely used in remote control, telemetry, communication, automatic control, mechatronics and power electronic equipment.Perfect for Split Charging or Various Automotive Applications. - Package Includes: 1 x 12V 500A Relay; 4 x Silver Terminal Connectors; 4 x Gold Terminal Connectors; 4 x Red Insulator; 4 x Heat Shrink Tube; 3 x Zip Ties; 1 x Instruction Manual. - ›See more product details ## Images ![WINJUN 4Pin Auto Starter Relay 12V DC 500 Amp Vehicle SPST Contactor Double Batteries Isolator Control On/Off Switch, Heavy Duty, High Current, with Connection Accessory - Image 1](https://images-na.ssl-images-amazon.com/images/I/616iThkgTzL.jpg) ![WINJUN 4Pin Auto Starter Relay 12V DC 500 Amp Vehicle SPST Contactor Double Batteries Isolator Control On/Off Switch, Heavy Duty, High Current, with Connection Accessory - Image 2](https://images-na.ssl-images-amazon.com/images/I/61cw9Rh7ADL.jpg) ![WINJUN 4Pin Auto Starter Relay 12V DC 500 Amp Vehicle SPST Contactor Double Batteries Isolator Control On/Off Switch, Heavy Duty, High Current, with Connection Accessory - Image 3](https://images-na.ssl-images-amazon.com/images/I/61PVnu%2BCn1L.jpg) ![WINJUN 4Pin Auto Starter Relay 12V DC 500 Amp Vehicle SPST Contactor Double Batteries Isolator Control On/Off Switch, Heavy Duty, High Current, with Connection Accessory - Image 4](https://images-na.ssl-images-amazon.com/images/I/71MSnzfAMyL.jpg) ![WINJUN 4Pin Auto Starter Relay 12V DC 500 Amp Vehicle SPST Contactor Double Batteries Isolator Control On/Off Switch, Heavy Duty, High Current, with Connection Accessory - Image 5](https://images-na.ssl-images-amazon.com/images/I/61LeeR%2BqrPL.jpg) ## Customer Reviews ### ⭐⭐ NOT for continuous duty *by R***. on Reviewed in the United States on July 14, 2019* Well made and functions well. However, this is not for continuous duty. The primary coil draws enough power to get very hot. After about an hour of "on time" this housing is too hot to touch. This would be fine for intermittent duty but do not use it as a battery isolator! I wasted $25. ### ⭐ UNACCEPTABLE - Absolute Garbage *by C***R on Reviewed in the United States on August 20, 2019* I've had this part installed for exactly three days. It has only been under very light load (less than 20 amps), and now it is sticking. It will not release when voltage is removed from the coil.Don't waste your money on this cheap imported junk! ### ⭐ Im not a fan *by J***N on Reviewed in the United States on September 6, 2019* It cuts the current to my starting battery after engaging the starter, takes 3 or 4 attempts to start my truck now. Im not sure what is causing it. When disconnected truck starts fine --- ## 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.sk/products/89349881-winjun-4pin-auto-starter-relay-12v-dc-500-amp-vehicle](https://www.desertcart.sk/products/89349881-winjun-4pin-auto-starter-relay-12v-dc-500-amp-vehicle) --- *Product available on Desertcart Slovakia* *Store origin: SK* *Last updated: 2026-05-24*