--- product_id: 39006959 title: "DITEK DTK-120/240CM+ Surge ARRESTOR, Parallel Protector, Multi-Purpose, NEMA 4X, UL1449 Listed, SPD, Type 1, 2W(+G), 120/240VAC" brand: "ditek" price: "£74.27" currency: GBP in_stock: true reviews_count: 8 category: "Ditek" url: https://www.desertcart.co.uk/products/39006959-ditek-dtk-120-240cm-surge-arrestor-parallel-protector-multi-purpose store_origin: GB region: United Kingdom --- # 2000 Joules Surge Protection 120/240VAC Dual Voltage NEMA 4X Weatherproof Enclosure DITEK DTK-120/240CM+ Surge ARRESTOR, Parallel Protector, Multi-Purpose, NEMA 4X, UL1449 Listed, SPD, Type 1, 2W(+G), 120/240VAC **Brand:** ditek **Price:** £74.27 **Availability:** ✅ In Stock ## Summary > ⚡ Power up your protection game—because your tech deserves the best! ## Quick Answers - **What is this?** DITEK DTK-120/240CM+ Surge ARRESTOR, Parallel Protector, Multi-Purpose, NEMA 4X, UL1449 Listed, SPD, Type 1, 2W(+G), 120/240VAC by ditek - **How much does it cost?** £74.27 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/39006959-ditek-dtk-120-240cm-surge-arrestor-parallel-protector-multi-purpose) ## Best For - ditek enthusiasts ## Why This Product - Trusted ditek brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **NEMA 4X Rated Durability:** Engineered to withstand harsh environments—rain or shine, indoors or out. - • **DIY-Friendly Installation:** Quick setup designed for professionals and savvy managers who value efficiency. - • **Dual Voltage Compatibility:** Seamlessly protects both 120V and 240V systems for versatile use. - • **Robust 2000 Joules Defense:** Shield your devices with industry-leading surge absorption power. - • **UL1449 Listed Safety Assurance:** Certified reliability that meets strict safety standards for peace of mind. ## Overview The DITEK DTK-120/240CM+ Surge Arrestor is a UL1449 listed, Type 1 SPD designed for 120/240VAC systems. Featuring a robust 2000 Joules surge protection rating and housed in a durable NEMA 4X enclosure, it offers reliable defense against power surges in both residential and commercial settings. Compact and easy to install, it’s ideal for safeguarding sensitive electronics in apartments, offices, and more. ## Description DITEK DTK-120/240CM+ Surge ARRESTOR, Parallel Protector, Multi-Purpose, NEMA 4X, UL1449 Listed, SPD, Type 1, 2W(+G), 120/240VAC Review: Ductless mini-split protection - Installed and powered up as required. Good that mfg lists ductless AC units as an application, which makes it meet code. Review: Easy to install - Own many. Easy to DIY install. ## Features - DITEK DTK-120/240CM+ Surge ARRESTOR, Parallel Protector, Multi-Purpose, NEMA 4X, UL1449 Listed, SPD, Type 1, 2W(+G), 120/240VAC ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B001ULNGSQ | | Amperage | 15 Amps | | Best Sellers Rank | #17,723 in Electronics ( See Top 100 in Electronics ) #168 in Surge Protectors | | Brand | Ditek | | Color | black | | Compatible Devices | most devices | | Customer Reviews | 4.7 out of 5 stars 333 Reviews | | Enclosure Material | High impact plastic | | Item Dimensions L x W | 4"L x 3"W | | Item Weight | 0.57 Pounds | | Manufacturer | DITEK | | Mfr Part Number | DTK-120/240CM+ | | Model Number | 120/240CM+ #2 | | Number of Outlets | 4 | | Number of Ports | 4 | | Other Special Features of the Product | Surge Protection | | Plug Type | Type B | | Power Plug Type | Type B - 3 pin (North American) | | Product Dimensions | 4"L x 3"W | | Recommended Uses For Product | Apartment, Hotel, Office, Restaurant, TV | | Shape | Rectangle | | Smart Home Compatibility | Not Smart Home Compatible | | Special Feature | Surge Protection | | Surge Protection Rating | 2000 Joules | | Total Power Outlets | 4 | | UPC | 782980505750 | | Unit Count | 1.0 Count | | Voltage | 240 Volts | ## Product Details - **Brand:** Ditek - **Color:** black - **Total Power Outlets:** 4 - **Voltage:** 240 Volts - **Special Feature:** Surge Protection ## Images ![DITEK DTK-120/240CM+ Surge ARRESTOR, Parallel Protector, Multi-Purpose, NEMA 4X, UL1449 Listed, SPD, Type 1, 2W(+G), 120/240VAC - Image 1](https://m.media-amazon.com/images/I/51sm89qZxBL.jpg) ## Questions & Answers **Q: Wire to load or line? Instructions said load. I watched a video and this electrician said these devices should go on line. So which is right?** A: depends on what you are using it on if a 120 appliance you use the green and one black black to black or to hot side the green to common or ground and wire nut unused line only if it is only used on 120 volts if 230 volts one black wires go to each hot side of what you are connecting to or to both hot sides and the green goes to ground or a black wire one to L1 and one to L2 green goes to ground **Q: will this flip a15 amp breaker?** A: Possibly. It depends on the severity of any power surge. The instructions (that come with this and are also on the Ditek website) say for Type 2 usage "minimum 20 amp circuit breaker is required". The wires on the unit are AWG 12 stranded. I'm using 30A CB in my service panel application. I'm also planning to install a second one at my outside HVAC compressor disconnect which has a 60A CB. I'm a homeowner not an electrician. I would say if it trips your 15A CB during a power surge then you didn't get optimal protection that day. **Q: Can this be mounted outside on the side of the disconnect?** A: The spec sheet for this SPD states a minimum 20 amp circuit breaker. So will this be ok on a disconnect with a 30 amp breaker? **Q: Does this unit come with a locknut? One reviewer has said no. If no where do you buy one? Thanks** A: Yes it does come with a locknut, but also 3/4 locknut works. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Ductless mini-split protection *by E***C on April 4, 2026* Installed and powered up as required. Good that mfg lists ductless AC units as an application, which makes it meet code. ### ⭐⭐⭐⭐⭐ Easy to install *by S***N on April 6, 2026* Own many. Easy to DIY install. ### ⭐⭐⭐⭐⭐ Great product, easy installation *by D***S on April 1, 2025* Perfect! The DIY installation was straight forward and basically very easy. No issues at all. I did pigtail the wires so there was only one wire attached to each of the two connecting lugs. I also like the fact that there is a visable clue that the unit is functining properly via the green LED light. The AC company I use for maintenace cleaning made a very compelling discussion for having an HVAC surge protector installed. But unfortunately they were quoting over $300 to install one. The ease of the installation and the cost of this actual product made this purchase a perfect alternative to the AC company. ## Frequently Bought Together - DITEK DTK-120/240CM+ Surge ARRESTOR, Parallel Protector, Multi-Purpose, NEMA 4X, UL1449 Listed, SPD, Type 1, 2W(+G), 120/240VAC - Siemens WNC2060 60-Amp, 240V Pull Out AC Disconnect, Non-Fused, Outdoor - Refrigeration Technologies RT201B Nylog Gasket/Thread Sealant, 30 ml (1 Pack) --- ## 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.uk/products/39006959-ditek-dtk-120-240cm-surge-arrestor-parallel-protector-multi-purpose](https://www.desertcart.co.uk/products/39006959-ditek-dtk-120-240cm-surge-arrestor-parallel-protector-multi-purpose) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-06-23*