0.18mm (33 AWG) KA1 Type Resistance Wire


The 0.18mm (33 AWG) KA1 Type Resistance Wire is a high-quality, durable choice for a range of electrical applications. Made from FeCrAl A1, it excels in heat resistance and longevity, ideal for heating elements, precision resistors, and rheostats. Its flexibility and strength balance make it suitable for intricate designs in both industrial and DIY projects.

✔ Huge Range Available

✔ Produced In Warrington, UK

✔ Shipped Within 24 Hours

✔ 30 Day Returns Accepted

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KA1 Type Resistance Wire

The Crazy Wire Company are best known and long established as Europe’s preferred suppliers of top quality KA1 type resistance wire. We have enormous stock levels at all times as we use this wire to weave our mesh products.

The KA1 Type Resistance Wire, with its 0.18mm (33 AWG) gauge, is a versatile and reliable component widely used in a variety of electrical and electronic applications. The FeCrAl A1 wire is made from a high-quality material that is known for its exceptional heat resistance and durability, making it a great choice for applications requiring sustained high temperatures. The 0.18mm thickness ensures a balance between flexibility and strength, allowing it to be used in intricate designs without compromising performance. As a result, this wire is particularly suitable for use in heating elements.

Moreover, its resistance properties make it an ideal material for precision resistors and rheostats, which require accurate current control. The robustness of the wire and its resistance to oxidation at high temperatures also make it perfect for use in laboratory equipment, industrial furnaces, and automotive products. It is commonly used in custom electronic projects and repairs by hobbyists and DIYers. It is also easy to handle and install, making it a great option for professionals and amateurs alike.

Specification of this KA1 Type Resistance Wire:

  • Diameter – 0.18mm (180 Micron – 33 AWG)
  • Ohms/ft – 56.98

We also offer the KA1 grade as flat wire too if required.

Why Use The Crazy Wire Company

  1. Quality of products: The Crazy Wire Company always  offer high-quality products that meet industry standards and customer expectations.
  2. Selection: We offer a wide variety of wire products and sizes to meet the diverse needs of our customers. We have more than 600 products available through our site and counting. 
  3. Price: We always offer the best value possible. Our wires are available as part of our major weaving processes, so it is bought at the best possible rate. 
  4. Availability: Our products are kept in house and are ready to ship immediately. 
  5. Customer service: Our experienced staff help our customers feel confident in their purchases and provide assistance when required. 

What Else Is Available?

We do not only offer KA1 wire. We also have a huge range of Stainless Steel and nichrome round wire in immediate stock too.

Ribbon wire and flat wire are stocked for immediate dispatch too.


FAQs About This Wire

Is KA1 Type Resistance Wire Suitable For Heating Elements In Appliances?

Yes, KA1 Type Resistance Wires are ideal for heating elements in appliances. This material’s composition, composed of FeCrAl A1, provides excellent heat resistance and durability, making it suitable for high-temperature applications. Because the wire can withstand repeated heating cycles without deteriorating significantly, it can function for a long time in appliances such as toasters, ovens, and space heaters. As an added benefit, its electrical resistance properties allow for precise temperature control, which is crucial for many household and industrial appliances. In addition, this wire is 0.18mm in diameter, providing a good balance between flexibility and strength, making it ideal for a variety of designs and heating systems.

How To Safely Cut And Install KA1 Type Resistance Wire?

  1. Wear Protective Gear: Always wear safety glasses to protect your eyes from flying wire fragments. Gloves are also recommended to protect your hands from sharp edges.
  2. Use the Right Tools: Utilise a sharp, clean wire cutter or specific shears for cutting resistance wire. This ensures a clean cut and prevents fraying.
  3. Measure Accurately: Before cutting, measure the length of wire needed for your project precisely. This minimises waste and ensures the wire fits the intended application.
  4. Secure the Wire: When cutting, hold the wire firmly, or use a vise or clamp to keep it steady. This prevents slipping and potential injury.
  5. Cut with Care: Apply a firm, steady pressure when cutting. Do not rush, as a sudden or forceful cut can cause the wire to snap unpredictably.
  6. Inspect the Wire Ends: After cutting, inspect the ends for any burrs or sharp edges. If necessary, use a small file or sandpaper to smooth them out.
  7. Installing the Wire: When installing the wire, ensure it’s securely attached to the terminals or connection points. Avoid any unnecessary stress or bending of the wire at sharp angles, as this can weaken it.
  8. Check Electrical Connections: Ensure that all electrical connections are tight and secure to prevent any potential short circuits or electrical hazards.
  9. Testing: Once installed, carefully test the wire in a controlled environment to ensure it functions as expected before putting the appliance or device into regular use.
  10. Follow Device Specifications: Always adhere to the specifications and guidelines of the device or application you are using the wire for. This includes considerations for electrical load, resistance, and thermal properties.


The Crazy Wire Company is a leading UK based supplier of nichromefecral, and stainless steel wires. We specialise in rapid delivery to any location around the country. Our factory is located in Warrington, which is the historic home of the UK’s wire industry.

Check out our blog ‘Everything That You Need To Know About Wire  for more information on resistance wire in general. Our goal for our blogs and help guides is to answer as many questions as possible to help to explain the possibilities of mesh to our customers. 

We also offer similar products through our highly popular eBay store, check us out there too.

Additional information


50 Metres (166.66 Feet), 100 Metres (330 Feet), 200 Metres (660 Feet)


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