--- product_id: 143912268 title: "2pcs 40/30 Amp Waterproof Relay Switch 12AWG Harness Set with Built-in Diode- 12V DC 4-Pin SPST Automotive Relays Hot Wires" brand: "gebildet" price: "R676" currency: ZAR in_stock: true reviews_count: 13 category: "Gebildet" url: https://www.desertcart.co.za/products/143912268-2pcs-40-30-amp-waterproof-relay-switch-12awg-harness-set store_origin: ZA region: South Africa --- # 40A high current rating Waterproof reliability Pre-wired 12AWG harness 2pcs 40/30 Amp Waterproof Relay Switch 12AWG Harness Set with Built-in Diode- 12V DC 4-Pin SPST Automotive Relays Hot Wires **Brand:** gebildet **Price:** R676 **Availability:** ✅ In Stock ## Summary > ⚙️ Drive with confidence—rely on Gebildet’s waterproof power relay! ## Quick Answers - **What is this?** 2pcs 40/30 Amp Waterproof Relay Switch 12AWG Harness Set with Built-in Diode- 12V DC 4-Pin SPST Automotive Relays Hot Wires by gebildet - **How much does it cost?** R676 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/143912268-2pcs-40-30-amp-waterproof-relay-switch-12awg-harness-set) ## Best For - gebildet enthusiasts ## Why This Product - Trusted gebildet brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Plug & Play Precision:** Comes with a heavy-duty 12AWG pre-wired harness for quick, professional installation. - • **Smart Protection Inside:** Integrated diode suppresses voltage spikes, safeguarding your vehicle’s electronics. - • **Engineered for Endurance:** Rated for 10 million mechanical operations and 100,000 electrical cycles—built to last. - • **Power That Packs a Punch:** Handles up to 40 amps, perfect for demanding automotive electrical loads. - • **Built to Brave the Elements:** IP-grade waterproof design ensures flawless performance rain or shine. ## Overview The Gebildet 2pcs 40/30 Amp Waterproof Relay Switch Set features robust 12V DC 4-pin SPST relays with a heavy-duty 12AWG pre-wired harness and built-in diode protection. Designed for automotive use, these relays deliver up to 40 amps of switching current, operate reliably across extreme temperatures (-40 to +125°C), and boast exceptional durability with millions of mechanical cycles. Their waterproof construction and integrated voltage spike suppression make them an essential upgrade for professionals seeking dependable, long-lasting electrical control in any weather. ## Description Specifications: Coil voltage: 12 V DC Coil current: 160 mA Switching voltage: 14 V DC max. Contact current rating: - NO 40 A 14 V DC - NC 30 A 14 V DC Ambient temperature: -40 ~ +125 degrees C (no condensation) Initial contact resistance (at 6 VDC 1 A): 50 mΩ max. Initial insulation resistance: 100 MΩ min. (DC 500 V) Initial dielectric strength: - Between open contacts: AC 500 V, 50/60 Hz 1 min. - Between coil and contact: AC 500 V, 50/60 Hz 1 min. Durability (operations): - Mechanical (at 7,200 operations/h): 10,000,000 - Electrical (at 600 operations/h): 100,000 Please note: --- Easy to install – No instructions were included – You need to have some basic electrical knowledge. --- For your own safety and the safety of others, please have the device installed by professional technicians. Review: Quality Product - Great quality product, good length wires and strong fixing. Review: Check the wire colours guys! Easy to repin - Great product. Solid connections. Good quality silicone waterproofing and plastic plugs. Both wire guages and more than ample for my light H4 LED application. Just double check the wire colours though. I was ready to repin 85 and 86 so that ground (85) was black not white as per the desertcart product page photos. Good news, the advert photo labelling is wrong and so: The ground wire (85) was in black as desired The trigger feed wire (86) is white The12V positive wire (30) is red The Blue wire (87) goes to the device/light. ## Features - ✪ Waterproof automotive relay with 12V DC (max. 14V). Note: 12V and 14V are coil voltages, not the voltage that triggers the switch. - ✪ Wire specifications: Black - Ground (85), Red - VDC (30), White - Trigger (86), and Blue - Output - N/O (87) - ✪ Excellent waterproof performance, high quality in all weather conditions - ✪ Pre-wired harness - Heavy-duty 12AWG wire harness. - ✪ Integrated diode: Each relay features a built-in diode that suppresses the induced voltage during switching, protecting your electrical components from potential damage. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07TWC48QW | | Brand | Gebildet | | Coil Resistance | 75 Ohms | | Coil Voltage | 12 Volts (DC) | | Connector Type | Plug-In | | Connector type | Plug-In | | Contact Current Rating | 30 Amps | | Contact Material | Silver Cadmium Oxide | | Contact Type | Spst | | Contact material | Silver Cadmium Oxide | | Contact type | Spst | | Country Of Origin | China | | Current Rating | 40 Amps | | Current rating | 40 Amps | | Customer Reviews | 4.6 out of 5 stars 398 Reviews | | Global Trade Identification Number | 08431248938183 | | Manufacturer | Gebildet | | Manufacturer Part Number | DE260 | | Minimum Switching Voltage | 12 Volts (DC) | | Mounting Type | Screw Mount | | Mounting type | Screw Mount | | Operation Mode | Automatic | | Wattage | 1.92 watts | ## Product Details - **Connector type:** Plug-In - **Contact material:** Silver Cadmium Oxide - **Contact type:** Spst - **Current rating:** 40 Amps - **Mounting type:** Screw Mount ## Images ![2pcs 40/30 Amp Waterproof Relay Switch 12AWG Harness Set with Built-in Diode- 12V DC 4-Pin SPST Automotive Relays Hot Wires - Image 1](https://m.media-amazon.com/images/I/61WB04FcLFL.jpg) ## Available Options This product comes in different **Style** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Quality Product *by R***F on 22 April 2026* Great quality product, good length wires and strong fixing. ### ⭐⭐⭐⭐⭐ Check the wire colours guys! Easy to repin *by B***Y on 6 March 2026* Great product. Solid connections. Good quality silicone waterproofing and plastic plugs. Both wire guages and more than ample for my light H4 LED application. Just double check the wire colours though. I was ready to repin 85 and 86 so that ground (85) was black not white as per the amazon product page photos. Good news, the advert photo labelling is wrong and so: The ground wire (85) was in black as desired The trigger feed wire (86) is white The12V positive wire (30) is red The Blue wire (87) goes to the device/light. ### ⭐⭐⭐⭐ The quality looks good. *by R***K on 20 November 2024* I bought these for my boat, the quality looks good but I haven't used them yet. --- ## 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.co.za/products/143912268-2pcs-40-30-amp-waterproof-relay-switch-12awg-harness-set](https://www.desertcart.co.za/products/143912268-2pcs-40-30-amp-waterproof-relay-switch-12awg-harness-set) --- *Product available on Desertcart South Africa* *Store origin: ZA* *Last updated: 2026-08-31*