Lotos Ct520d Multi-Process Welder Review


In case you need a welder cum cutting machine, you might not need to look further. Lotos CT520D multi-process welder will provide all you need. You will undoubtedly agree after reading this Lotos CT520D multi-process welder review.

With a range of features and advanced technology, you’ll be getting yourself the best multi-process welding machine. Like other Loots products, this one is also a budget-friendly option for DIY users and professionals.

There are plenty of reasons for which we choose this multi-process welder for you. This is what we are going to break down in Lotos CT520D multi-process plasma cutter review.  

Specification at a Glance:

  • Brand Name: LOTOS
  • Model: CT520D
  • Material: Steel
  • Size: ½ inch clean cut
  • Style: 50Amp Plasma Cutter
  • Color: Brown
  • Function: 3 in 1 (Plasma cutter, DC TIG welder, and DC stick welder)
  • Power Source: DC
  • Voltage: 110V/220V (50Hz/60Hz)
  • Amperage Capacity: 10-200A @ 220V and 10-150A @ 110V
  • Installation Process: TIG welding
  • Weight: 38.5Lbs
Lotos CT520D 50 AMP Air Plasma Cutter, 200 AMP Tig and Stick/MMA/ARC Welder 3 in 1 Combo Welding Machine, ½ Inch Clean Cut, Brown
  • ★ 𝐏𝐥𝐚𝐬𝐦𝐚 𝐂𝐮𝐭𝐭𝐞𝐫: 50AMP Plasma Cutter Current Output; Max Ideal Cut Thickness: 1/2" ; Max Severance Thickness: 3/4"; Compact Plasma Cutter Has a Handle for Portability and Uses Non-Hazardous Compressed Air to Cut Stainless Steel, Alloy Steel, Mild steel, Copper, and Aluminum;
  • ★ 𝐓𝐢𝐠 𝐖𝐞𝐥𝐝𝐞𝐫: 15-200AMP DC TIG Electric Current Output; Quality TIG welding on Stainless or Steel and Precise Welding of Thinner-gauge Materials; HF arc start hand torch control and Precise Foot Pedal Welding Heat Control(Foot Pedal & Argon Regulator are NOT Included).
  • ★ 𝐒𝐭𝐢𝐜𝐤/𝐌𝐦𝐚 𝐖𝐞𝐥𝐝𝐞𝐫: 15-200 AMP DC Stick/MMA Electric Current Output; Easy ARC Start, Stable Welding Arc; Deep Weld Pool and Beautiful Welding Shape; Adjustable Hot Striking Arc Current which Can Greatly Improve the Arc-Starting Function; Suitable for Welding with Different Kinds of Acid or Basic Electrode.
  • ★ 𝐒𝐞𝐭𝐮𝐩 𝐰𝐢𝐭𝐡𝐢𝐧 𝟏 𝐌𝐢𝐧𝐮𝐭𝐞: The pre-installed NPT 1/4” industry type D plug and air filter regulator allows you to quick connect to your air compressor by using the stand coupler existing on your air compressor. The whole machine can be setup quickly within 1 min.
  • ★ 𝐁𝐮𝐲 𝐰𝐢𝐭𝐡 𝐂𝐨𝐧𝐟𝐢𝐝𝐞𝐧𝐜𝐞: We offer a 𝟑𝟎 𝐝𝐚𝐲 𝐦𝐨𝐧𝐞𝐲-𝐛𝐚𝐜𝐤 𝐠𝐮𝐚𝐫𝐚𝐧𝐭𝐞𝐞, 𝐚 𝟏-𝐲𝐞𝐚𝐫 𝐍𝐞𝐰 𝐑𝐞𝐩𝐥𝐚𝐜𝐞𝐦𝐞𝐧𝐭 𝐰𝐚𝐫𝐫𝐚𝐧𝐭𝐲 𝐚𝐧𝐝 𝐭𝐨𝐭𝐚𝐥 𝟑-𝐘𝐞𝐚𝐫 𝐥𝐢𝐦𝐢𝐭𝐞𝐝 𝐰𝐚𝐫𝐫𝐚𝐧𝐭𝐲, please submit warranty registration form on our website. 𝐎𝐮𝐫 𝐔𝐒𝐀-𝐛𝐚𝐬𝐞𝐝 customer service(via phone/email) is available to assist you.

Highlights of Lotos CT520D Multi-process Welder

Lotos CT520D 50 AMP air plasma cutter offers a lot of alternative options for MIG welders. This advanced plasma cutter is an effective tool that comes at an affordable price.


The Lotos CT520D is one of the leading multi-process welders that offers a 3 in 1 function. It allows 200A Stick welder, 50A Air Plasma Cutter, and 200A TIG welder with the flip of a switch. This multipurpose welder lets the user to DC TIG/Stick welder and plasma cut. 

Cutting Ability

With advanced Lotos technology, this Lotos CT520D multipurpose welder met the cutting standards. This welder is suitable for alloy steel, stainless steel, mild steel, aluminum, copper, and other metals. It assures TIG welding on stainless or steel and precise welding on thinner-gauge materials.

Lotos CT520D can TIG weld 0.250” mild and stainless steel with ease. Also, it can cut 0.375″ and .500″ to well. Apart from that, the plasma cutter features ½” max cutting thickness and ¾” max severance thickness.

Dual Power Input

Lotos CT520D air plasma cutter includes automatic dual voltage power input and dual-frequency. With the dual voltage capability, it allows the machine to run directly on 220V and 110V. 

Thus, its dual voltage makes the device compatible with all types of power sources. You will need to purchase a pigtail to use the machine on standard household current.

Better Control and Excellent Performance

Lotos Ct520d 50 Welder

This multi-process welder features HF ARC start-hand touch control for fast and easy arc start. Also, the precise foot-pedal welding heat control allows for stable welding. 

With the security control system, you can quickly move from one mode to another. Lotos Ct520D welder is one of those machines that can cut and weld together. Its unique non-touch pilot offers you to cut through uneven and rusty surfaces speedily.


With weighing only 38.5lbs, the Lotos CT520D multi-process welder is built to be portable. This portable and compact welder plasma cutter includes a handle with a comfortable grip. You can carry this from job sites to job sites with ease.

Safe to Use

Lotos CT520D plasma cutter offers better safety and affordability than oxyhydrogen cutting. Due to the advanced technology and excellent control system, it becomes too easy to use.

What We Liked

  • Multifunctional 3 in 1 welder
  • Works on dual voltage
  • Secure control system 
  • Efficient operation
  • Convenient to use
  • Excellent portability
  • Superb cutting capability
  • Great build quality

What We Didn’t Like

  • Works only on DC, no AC output
  • The cable seems small

Who Should Buy This?

The Lotos CT520D multi-process welder is designed for people who are looking for durable and versatile welder and a small-sized plasma cutter. It is basically used in a small garage and home. Along with plasma cutting, it does TIG and ARC welding very well. Both the newbie and professional welder prefer using this multi-process welder. 

Frequently Asked Questions (FAQs)

Q: Can I weld aluminum with Lotos CT520D multi-process welder?

A: Yes. You can weld aluminum along with DC as you cannot do this with AC. However, you need to run helium gas. Also, you need to be a little bit of an expert. 

Q: Does this welder comes with tungsten electrodes?

A: Yes, it comes with tungsten electrodes, and the size of it is 1/6. Still, it is better to buy more as you’ll need them before re-sharpening. 

Q: Does this welder need a foot pedal?

A: Though you can adjust the output on the panel, yet you need to buy a foot pedal. It will surely give you a better experience while using TIG.

Q: Can I hook a spool gun to this machine?

A: No. It doesn’t have a wire feed, so a spool gun will not work with this welder.

Q: Do I have to use gas for any type of welding?

A: In the case of TIG welding, you will have to use a bottle of Argon gas. Then, use compressed air for plasma cutting. It doesn’t require any gas for stick welding. 


Final Thoughts

Overall, the Lotos CT520D multi-process welder is a handy welding machine for home and garage. We appreciate its plasma cutting function. Rather than that, TIG and stick welding also works very well once you are used to it. 

That’s all we tried to tell in our Lotos CT520D multi-process welder review. Best of luck with your next project!

Other Lotos Welder:

  1. Lotos TIG 200A Stick AC/DC welder review
  2. LOTOS Mig 175 Welder Review

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  1. Pingback: Lotos Tig200 Stick Dc Welder Review - Welding Dad

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