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Zareba® Heavy-Duty Wood Post Claw Insulator, Black, (100 count)

Model #: HDCL100

5 reviews
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  • Heavy-duty wood post insulator for semi-permanent fencing
  • Use with polywire, polyrope, galvanized or high tensile wire
  • Claw design allows for easy fence line setup and takedown
  • Quick wood post installation with two nails
  • Solid polypropylene construction
  • 100 black claw insulators per package
  • Service Experts Available To Answer Your Installation Questions


Get 100 Zareba® Heavy-Duty Wood Post Black Claw Electric Fence Insulators in one packageWith these heavy-duty electric fence insulators, you can quickly install or remove fence lines. The insulators’ claw design allows you to thread polyrope, polywire, high tensile wire or galvanized wire through them. As a result, this durable insulator gives you the ultimate in electric fence flexibility. Quickly attach your insulator to wood fence posts and then string your electric fence line through the secure polypropylene claw in just a few seconds. With the non-conductive properties of these Zareba® insulators, you can avoid power loss as a result of accidental grounding. Each package contains 100 Zareba® Heavy-Duty Wood Post Black Claw Electric Fence Insulators.

Looking for claw insulators in white?



Zareba® Heavy-Duty Wood Post Black Claw Electric Fence Insulators are designed to grip your favorite electric fence line styles, including polyrope, polywire, high tensile wire or galvanized wire. With these claw insulators, your fence line stays close to your wood fence posts without risking an accidental short. Constructed from durable polypropylene plastic, these electric fence insulators are easy to use – simply lace the wire around each claw and your fence line will be ready to use in no time.



By buying 100 black claw insulators at a time, you can better prepare for a first-time electric fence installation. It’s also good to have a large stock available in case you plan to expand your fence line or need to perform maintenance or emergency repairs to a damaged electric fence.



Each heavy-duty claw insulator is ready for immediate installation. To attach insulators to your wood posts, secure the insulators with screws or nails. After that, you can quickly and easily run your fence line.



Zareba® uses a molded, heavy-duty plastic, known as polypropylene, in the construction of these claw insulators. This durable plastic is perfect for electric fencing since it’s strong and non-conductive.



Installing an electric fence? Remember to use an 8-Light Electric Fence Voltage Tester to gauge your fence’s power levels. Picking the right energizer is also important to properly contain your livestock – try a solar-powered charger to operate remote sections of fencing. Also, remember to use insulated cable when running electrified lines under gates.



Zareba® is the largest manufacturer of electric fence systems and offers durable, reliable electric fence products for all your pet and livestock fencing needs. Since the 1930s, Zareba® and its related brands have been a leader in electric fencing, providing for homes, farms and ranches in the decades since. If you have questions about your electric fencing purchase, reach out to Zareba® Service Experts for assistance.



Model No.






Fence Line Type

 Polywire, polyrope, galvanized wire or high tensile wire

Fence Post Type


Insulators Per Package



What's Included In The Box?

  • 100 Zareba® wood post insulators



Disclaimer: Zareba® System does not endorse any information contained in product reviews. Please follow all label instructions for your specific use.

Most Recent Customer Reviews

Review Rate
Review posted on www.zarebasystems.com
April 30, 2018
Very good product. Working well in our application. By Terry

I put these insulators on hand cut cedar posts for a thee wire high tensile installation. I used 2” deck screws and a 3/16 flat washer to attach to the posts. I could not have been more satisfied with the product, Thanks.

Review Rate
Review posted on www.zarebasystems.com
April 9, 2018
Wood post claw insulator simple to use and sturdy! By Bruce

I have been fencing horse pastures for over 50 years in all climates and with horses from miniature sized to off track Thoroughbreds. Zareba products are my number ONE choice. I love the wood post claw insulator as it's simple to use and very, very sturdy!

Review Rate
Review posted on www.zarebasystems.com
January 27, 2018
Highly recommend! By Cindy

Great products! Easy to install, quality product at an affordable price.

Review Rate
Review posted on www.zarebasystems.com
June 9, 2017
excellent By jody

The best bang for the buck from a wood post insulator. High enough quality to sustain the wires, yet strong enough to keep the deer from tearing them up. Priced right, and easy to buy online.

Review Rate
Review posted on www.zarebasystems.com
April 27, 2016
Zero Problems By tcpiper
Easy Purchase, quick shipping and great customer service. Everything you need with an online purchase.
Read All Reviews (5) Write a Review
Q.Can this wood post, wire holder be used with Zareba® ¼ - Mile 14 Gauge Aluminum Wire? It doesn't specifically state "aluminum" wire in its product description. Thank you.

Yes, this insulator can be used with aluminum wire.

Q.Can this be used with electrobraid?

Yes.  This insulator is the same as our ElectroBraid® model  IWHDCLAWW-EB insulator.

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All About

All About Insulators

Insulators prevent electrical shorts between the electrified wire and the fence posts. Good-quality insulators are critical to a properly functioning fence. Insulators are made from materials that do not conduct electricity, most commonly plastic or ceramic.


Plastic insulators are molded from polyethylene, polycarbonate, or nylon and are designed to hold electrified wire near a variety of posts without losing energy through the post.

There are several styles to choose from because the insulator must match both the type of wire and the type of fence post being used. Plastic insulators include round post insulators, T-post insulators, wood post insulators, corner post insulators, end post insulators, and chain link fence insulators.

Make sure the plastic insulator you choose is molded from heavy-duty, high-density polyethylene (or harder plastic) with UV inhibitors. This prevents arcing and provides long life with all-weather performance, protecting it from the weather. Most insulators are available in yellow, black and white.



Like plastic insulators, porcelain insulators are designed to hold electrified wire near fence posts without losing energy through the post.

When good porcelain insulators are properly installed they should be able to last the life of your fence.

Porcelain insulators are a very good choice for using with your high tensile fence system.



There are specialized insulators that are used for specific purposes. These can be summarized as follows:

Tube Insulators

  • The tube clamp insulator attaches to standard tube-type stock to corral panels.

Corner Insulators

  • Corner post insulators are designed to withstand fence line tension generated by the fence line pulling from the anchor point or changing directions.
  • Corner insulators should also be used at fence line termination points.
  • Corner post insulators are available in plastic and ceramic and accommodate steel wire, poly wire, poly tape and poly rope.

Specialty Insulators

  • Other insulators allow you to fasten electrified wire or poly products to posts and fences without losing energy through the post or fence.
  • There are many specialty insulators to choose from:
    • Chain Link
    • Tube
    • Corner
    • U-Post
    • Square Post

Expert Tips

Insulators come in many styles to accommodate a wide variety of post and wire types. Choose the correct type of insulator for the type of post and wire you've selected.

If you're using a low impedance fence charger, use an insulator with greater arcing protection, which will prevent the current from jumping to the fence post.

Porcelain insulators may be more expensive than plastic insulators, but they are designed to last a long, long time, usually the lifetime of your fence!

Plastic insulators can be used with all types of wire (and high tension if it is designated for it), while porcelain insulators can be used with all wires except for poly tape.

Corner posts and end posts have to withstand greater tension than other posts along the fence line. Therefore, use insulators at these areas that are designed to withstand the extra stress.

In addition, keep insulators free from dirt, dust and cobwebs.


FAQs About Insulators

Q: Do I need insulators for my electric fence system?

A: Insulators allow you to fasten electric wires near the posts without losing energy through the posts and potentially shorting out your system, so yes, definitely use insulators to maintain the current throughout your fence line.


Q: Which type of insulator should I use?

A: There are several factors to consider when determining which type of insulator you want for your electric fence system. These factors include the type of fence post you will be using, and the type of wire you will be using. For corners and end posts you will need to know how much tension you plan to have on the wire.


Q: Is a porcelain insulator better than a plastic insulator?

A: Porcelain insulators are used with high tensile fences as well as standard electric fences. They will last the life time of the fence and add a nice look to the fence. Their only drawback is their initial cost: Porcelain insulators usually cost more than plastic insulators.

Insulators made from plastic are generally used for standard electric fences only, although there are some designed for use with a high tensile fence.

More Insulator FAQs»

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