--- product_id: 21122534 title: "MNSPD-300-DC Surge Protection Device 300VDC" brand: "midnite solar" price: "€ 288.28" currency: EUR in_stock: true reviews_count: 9 category: "Mid Nite Solar" url: https://www.desertcart.be/products/21122534-mnspd-300-dc-surge-protection-device-300vdc store_origin: BE region: Belgium --- # 300V DC surge protection Type 4X outdoor rating 5-year USA warranty MNSPD-300-DC Surge Protection Device 300VDC **Brand:** midnite solar **Price:** € 288.28 **Availability:** ✅ In Stock ## Summary > ⚡ Power up your solar security with confidence—because your energy deserves elite protection! ## Quick Answers - **What is this?** MNSPD-300-DC Surge Protection Device 300VDC by midnite solar - **How much does it cost?** € 288.28 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.be](https://www.desertcart.be/products/21122534-mnspd-300-dc-surge-protection-device-300vdc) ## Best For - midnite solar enthusiasts ## Why This Product - Trusted midnite solar brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Weatherproof Type 4X Enclosure:** Built tough for outdoor environments—rain or shine, your system stays safe. - • **Intuitive LED Status Indicators:** Real-time visual alerts keep you informed on protection status at a glance. - • **Robust 300V DC & 240V AC Protection:** Shield your solar investment with versatile surge defense for both DC and AC systems. - • **Made in the USA with 5-Year Warranty:** Quality craftsmanship backed by a half-decade of peace of mind. - • **Seamless Compatibility & Easy Installation:** Works flawlessly with classic charge controllers and PV combiners—plug and protect. ## Overview The MidNite Solar MNSPD-300-DC is a UL1449 Type 1 surge protection device designed for both DC (up to 300V) and AC (120/240V) solar systems. Featuring a rugged Type 4X outdoor-rated enclosure, intuitive LED indicators, and a 5-year warranty, this USA-made SPD ensures reliable, real-time protection for your solar panels, charge controllers, and load centers. Its versatile design supports seamless integration and easy installation, making it a trusted choice for safeguarding valuable solar investments. ## Description MidNite Solar Surge Protection Device MNSPD-300-DC The MidNite Solar Surge Protector Device (MNSPD) is a Type 1 device per UL1449 rev3. It is designed for both AC and DC systems and provides protection to service panels, load centers or where the SPD is directly connected to the electronic device requiring protection. Protection for Classic and other charge controllers, off grid PV combiners and 120/240 VAC circuits. The DC SPD will work well on all DC circuits up to 300 volts as well as any 120/240 VAC circuits. The difference between the AC and DC SPD is the way the LED's are powered. The protection side of things is identical. FAQI ordered the MNSPD-300-DC. Why does my unit say MNSPD-300-AC? All units are labeled "MNSPD-300-AC," however, the marking on the box indicates whether the unit is AC or DC. All units are compatible with both AC and DC systems regardless of the box markings, the only difference is how the indicator lights work. Each unit has several lights and a DC unit hooked up to a DC system will power all of the indicator lights and vice versa; an AC unit hooked up to an AC system will power all of the indicator lights. If you hook a DC unit to an AC system, however, only 1 of the indicator lights will work and vice versa, but the unit will still be safe and function properly. Why aren't all my lights on the MNSPD-300 working? When you try and connect the MSNDP-300-AC on a DC circuit or vice versa, only 1 LED will illuminate, however, the MNSPD-300 is still fully functional. In order that all of the lights work, you would need to connect an AC unit on an AC circuit and a DC unit on a DC circuit. Review: Protection - You cant go wrong with having extra protection on your solar system after you invested so much and solar sytems are not cheap this protector is a reasonable price and it also looks cool in your system with its led indicators. Review: Great product!! - Great surge protection!! Easy and fast install time!!! ## Features - Environmental Rating - Type 4X (Outdoor) - Warranty - 5 yrs - Made in the USA - Size: 4.4"L x 3.8"W x 3.5"D - Weight: 1 Lb ## Technical Specifications | Specification | Value | |---------------|-------| | Best Sellers Rank | #68,488 in Electronics ( See Top 100 in Electronics ) #555 in Surge Protectors | | Customer Reviews | 4.8 out of 5 stars 97 Reviews | ## Images ![MNSPD-300-DC Surge Protection Device 300VDC - Image 1](https://m.media-amazon.com/images/I/61wM0jl+jdL.jpg) ## Questions & Answers **Q: Asked my solar consultant if I need a product like this. He said they are more likely to cause a fire than protect anything. Any comments?** A: That is absolutely false. There are some cheap Metal Oxide Varistor (MOV) surge suppressors on the market that have the potential to cause fires but all Midnite SPD Surge Protectors have thermal protection and are ETL certified to UL 1449 standards for risk of fire and electrical shock. We've sold thousands of Midnite SPD's over the years and have never had one catch fire. We HIGHLY recommend adding surge suppression to all solar-electric systems to protect your expensive equipment from lightning induced voltage surges. For more information visit Midnite's product page where you can find spec sheets, manuals, articles and videos. https://www.midnitesolar.com/productPhoto.php?product_ID=284&productCatName=Surge%20Protection%20Devices&productCat_ID=23&sortOrder=2&act=pc **Q: Is there a wiring diagram for this?** A: Yes on midnight Solar's website, and YouTube it was super simple **Q: Does one protect against emp? is so, which one??** A: Yes, these protect whatever lines they are wired to. Select the model that is closest to, but higher than, the voltage of the wires you are protecting. The 115V for low voltage AC and DC lines, the 300-AC or 300-DC for higher voltage DC lines and 120V/240V AC lines, and the 600V for high voltage lines. For more complete EMP protection, check out the EMP Hardening Kit. https://smile.amazon.com/Generic-EMP-Hardening-Kit/dp/B0BHKP2Y5F/ref=sr_1_2?crid=2OYV2TK1SY7XB&keywords=emp+hardening+kit&qid=1669680446&sprefix=emp+hardening+k%2Caps%2C574&sr=8-2&ufe=app_do%3Aamzn1.fos.08f69ac3-fd3d-4b88-bca2-8997e41410bb **Q: If I have a combiner box with 4 wires running from two arrays running to two charge controllers do I need two surge protectors?** A: You should use 4 surge suppressors. One suppressor at each end of each positive/negative wire pair. So you will have 2 suppressors at your combiner box to protect the solar arrays, and one suppressor at the input of each charge controller so they are protected. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Protection *by L***O on December 1, 2024* You cant go wrong with having extra protection on your solar system after you invested so much and solar sytems are not cheap this protector is a reasonable price and it also looks cool in your system with its led indicators. ### ⭐⭐⭐⭐⭐ Great product!! *by S***E on May 5, 2025* Great surge protection!! Easy and fast install time!!! ### ⭐⭐⭐⭐⭐ Surge protector *by R***T on June 13, 2025* Awesome product ## Frequently Bought Together - MidNite Solar MNSPD-300-DC Surge Protection Device 300VDC - MidNite Solar Surge Protection Device MNSPD-300-AC - Midnite Solar-MNSPD115 --- ## 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.be/products/21122534-mnspd-300-dc-surge-protection-device-300vdc](https://www.desertcart.be/products/21122534-mnspd-300-dc-surge-protection-device-300vdc) --- *Product available on Desertcart Belgium* *Store origin: BE* *Last updated: 2026-09-05*