Zareba® Wood Post Pin Lock Insulator, Black

Model #: HDPL100

6 reviews
0 5 4

Notify me when this product is in stock.

Reward Points with My Account Learn More »


  • Fasten electrified wire to posts without losing power
  • Heavy-duty wood post pin lock insulator
  • Use with all fence wire except for polytape and polyrope
  • Color: Black
  • 100 per box
  • Service Experts Available To Answer Your Installation Questions

Zareba® Wood Post Pin Lock Insulator

Our Zareba® Wood Post Pin Lock Insulator fastens electrified wire to wood posts without losing energy through the post. This black heavy-duty wood post pin lock insulator can be used with all fence wire except for poly tape and polyrope. Comes 100 per box.


Zareba® - Your Smart Electric Fence Systems for Animal Control


Zareba® Wood Post Pin Lock Insulator - Specs

  • Heavy-duty wood post pin lock insulator
  • Can be used with all fence wire except for polytape and polyrope
  • Color: Black
  • 100 per box

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
May 16, 2018
Highly recommend By FlySpur Ranch

Just as described. Perfect for the job. Great quality, great price.

Review Rate
Review posted on
May 7, 2018
Will buy again and recommend By Cowgirl

These are hard to find where in live so I was glad to find them here. I have used this type before and they work well. The price is very good also.

Review Rate
Review posted on
May 17, 2017
Not heavy duty. Do NOT purchase. By Dr. Johnson

Zareba has cheapened the plastic, strength, and durability of this product significantly since first ordering these 5 years ago. These are not heavy duty. Within 1 day of using them with the Electrobraid fence 15% of these expensive insulators were broke, with the pen breaking off. Do not buy this product if you want something that will last. Sincerely, Brad J, DVM Equine Veterinarian and AQHA 20 year breeder.

Response From Zareba®
Susan : Consumer Relations Representative

At Zareba®, we strive to manufacture durable and high quality items that will stand up to the elements.  We apologize that this was not your experience and would like to learn more.

Please contact our Consumer Relations Team directly at 1-855-5-ZAREBA (1-855-592-7322).  Our products are backed by a 30 day return policy and a one year warranty.  We are happy to provide additional assistance.

Review Rate
Review posted on
April 20, 2017
Great and strong By Gina

So far the strongest insulator I've found. Easy to use. I have over 9000 in place and not one had broken or malfunctioned.

Review Rate
Review posted on
January 22, 2017
Great insulators By Eberry
I bought these a few weeks ago and they are great. Zareba never disappoints me in quality products for electric fence. The black insulators stand up much better than the yellow I used to buy from the local tsc. I have over 40 acres fenced-in using these insultors, the ones like it for tposts, and a Zareba steady state charger with 14 Gauge wire. I keep in horses, donkeys, cows, goats, and pigs with no problem.
Review Rate
Review posted on
July 12, 2016
Good overall product By Buck44
I am building a high tensile electric fence and I ordered the Zareba wood post pin lock insulators. They appear to be well built except for pin that locks the wire. It appears to be a little flimsy. I have not had one break or come out yet, but they don't fit as snug as I would like. I bought some of the red snapper t post pin lock insulators and I'm very pleased with them. The pin is much better built and fits much tighter.
Read All Reviews (6) Write a Review
Q.what are the dimensions of each post lock insulators?

This insulator measures 3.5"H x 1.75"W. It is 1.25"D at its highest point and .25"D at its lowest point.

Ask Your Own Question
  • Yes, sign me up for an eNewsletter subscription so that I can receive information about products, enhanced services, exclusive sales and other special offers.

  • Reload captcha

* Required Fields

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»

Recommended Products