--- product_id: 583566819 title: "Nilight 12V 120A 4 Pin SPST Starter Relay Heavy Duty Switch for Car RV" brand: "nilight" price: "¥3764" currency: JPY in_stock: true category: "Nilight" url: https://www.desertcart.jp/products/583566819-nilight-12v-120a-4-pin-spst-starter-relay-heavy-duty store_origin: JP region: Japan --- # 120A high current capacity 4-pin SPST precision design Nylon flame-retardant & corrosion-resistant shell Nilight 12V 120A 4 Pin SPST Starter Relay Heavy Duty Switch for Car RV **Brand:** nilight **Price:** ¥3764 **Availability:** ✅ In Stock ## Summary > ⚡ Drive with confidence—power your ride with Nilight’s unstoppable relay! ## Quick Answers - **What is this?** Nilight 12V 120A 4 Pin SPST Starter Relay Heavy Duty Switch for Car RV by nilight - **How much does it cost?** ¥3764 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/583566819-nilight-12v-120a-4-pin-spst-starter-relay-heavy-duty) ## Best For - nilight enthusiasts ## Why This Product - Trusted nilight brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Built to Last:** Durable nylon flame-retardant shell resists heat and corrosion - • **Pure Copper Core:** High conductivity coil with silver composite contacts for longevity - • **Precision Engineering:** 4-pin SPST relay ensures reliable, secure current switching - • **Powerhouse Performance:** Handles up to 120A for heavy-duty automotive demands - • **Complete Installation Kit:** Includes copper lugs, heat shrink tubing, washers & wires for seamless setup ## Overview The Nilight 2PC 12V 120A 4 Pin SPST Starter Relay is a heavy-duty automotive relay designed for cars, trucks, RVs, and boats. Featuring a high 120A switching capacity, a durable nylon flame-retardant shell, and a pure copper coil with silver composite contacts, it ensures reliable, long-lasting performance. The package includes all necessary copper lugs, heat shrink tubing, washers, and wires for easy installation, making it the perfect upgrade for high-current automotive applications. ## Description desertcart.com: Nilight 12V 120A 4 Pin SPST Starter Relay Heavy Duty Switch for Car RV | Heavy-duty 12V 120A 4-pin SPST starter relay. Handles continuous high current for smooth power control on truck : Automotive ## Features - Type: 4Pin Relay, 12VDC (14V Max) , SPST (Single Pole Single Throw) Relay with 120A High Switching Capability. Perfect for Split Charging or Various Automotive vehicles such as cars, trucks, RVs, boats, Campers, RVs and other vehicles needing a high power. - Superior Quality: This relay consists of nylon flame retardant shell with pure copper inner core. High quality material is durable and has the characteristics of heat resistance, corrosion resistance and strong electric conductivity. - Pure Copper Coil: Internal use of pure copper coil, conductive performance is strong, low loss rate. Agsno2 composite silver contact, effective resistance to contact bonding, long service life. Precision design makes electricity more secure. - Key Functions: The relay acts as a current switch by converting a small current output into a large current. The advent of relays also extended the life of other automotive configurations. With 120A capacity, our relays can easily handle high current applications. This is a perfect make or break relay for your car. - Package Includes: 1x 120 Amp Split Charge relay. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0CJ2CNZD2 | | Best Sellers Rank | #3,753 in Automotive ( See Top 100 in Automotive ) #7 in Automotive Replacement Battery Switches | | Brand Name | Nilight | | Coil Voltage | 12 volts_of_direct_current | | Connector Type | Quick Connect | | Contact Current Rating | 120 A | | Contact Material | Copper | | Contact Type | Normally Open | | Current Rating | 120 A | | Customer Reviews | 4.8 4.8 out of 5 stars (56) | | Included Components | 1PC split charge relay | | Item Type Name | Nilight 120A Starter Relay 4 Pin Split Charge Relay Switch 12V Continuous Heavy Duty SPST High Current 4 Terminal Car Starter On Off Control Relay for Automotive Car Truck RV Camper, 2 Year Warranty | | Manufacturer | Nilight | | Minimum Switching Voltage | 12 volts_of_direct_current | | Model | 50217A | | Mounting Type | Through Hole Mount | | Number of Terminals | 2 | | Operation Mode | Manual | | Part Number | 50217A | | Specification Met | CE | | UPC | 840323906081 | | Wattage | 560 watts | ## Product Details - **Connector Type:** Quick Connect - **Contact Material:** Copper - **Contact Type:** Normally Open - **Current Rating:** 120 A - **Mounting Type:** Through Hole Mount ## Images ![Nilight 12V 120A 4 Pin SPST Starter Relay Heavy Duty Switch for Car RV - Image 1](https://m.media-amazon.com/images/I/41gL6YKhfSL.jpg) ![Nilight 12V 120A 4 Pin SPST Starter Relay Heavy Duty Switch for Car RV - Image 2](https://m.media-amazon.com/images/I/41CKrcATaoL.jpg) ![Nilight 12V 120A 4 Pin SPST Starter Relay Heavy Duty Switch for Car RV - Image 3](https://m.media-amazon.com/images/I/41nwRT2OOML.jpg) ![Nilight 12V 120A 4 Pin SPST Starter Relay Heavy Duty Switch for Car RV - Image 4](https://m.media-amazon.com/images/I/51zEmnJw40L.jpg) ![Nilight 12V 120A 4 Pin SPST Starter Relay Heavy Duty Switch for Car RV - Image 5](https://m.media-amazon.com/images/I/51pREOn9imL.jpg) ## Available Options This product comes in different **Color** options. ## Frequently Bought Together - Nilight 2PC 120A Starter Relay 4 Pin Split Charge Relay Switch 12V Continuous SPST High Current 4 Terminal Car Starter Control Relay w/Copper Wire Lugs for Automotive Car Truck Camper - Blue Sea Systems 5025 ST Blade Fuse Block 6 Circuit with Ground and Cover - irhapsody Relay 120A, 12V Continuous Duty Relay, 4 Pin High Current Relay, Split Charge Relay Switch, Spst High Power On/Off Heavy Duty Starter Relay --- ## 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/583566819-nilight-12v-120a-4-pin-spst-starter-relay-heavy-duty](https://www.desertcart.jp/products/583566819-nilight-12v-120a-4-pin-spst-starter-relay-heavy-duty) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-08-31*