JouleShield™ Wood Post Claw Insulator
Product Details
Heavy-duty claw-style insulator from Strainrite Fencing Systems for securing electric fence wire to wood posts. The JouleShield™ design improves insulation performance while holding fence wire firmly in place.
Key features:
- Claw-style grip holds wire securely on wood posts
- Larger surface area and shielding helps reduce power leakage and maintain fence voltage
- UV-stabilized, high-strength plastic for all-weather durability
- Suitable for high-tensile wire and low-tension conductors (polyropes, twines and braids)
Benefits
Specs
- Dimensions: 1-3/4"W × 3-1/2"H
- JouleShield™ flange for increased insulation performance
- Reinforced web bracing and thick walls for added structural strength
- Long-life, UV-stabilized plastic
- Made in New Zealand by Strainrite Fencing Systems
Common Questions
- Pinlock vs. Claw — What’s the difference?
- Pinlock insulators are generally easier to work with. The wire conductor can be inserted or removed quickly by pulling the pin, even with some tension on the line. This allows for faster, simpler adjustments and repairs.
Claw-style insulators trade that convenience for durability. With no small pin to break, they offer a more rugged hold and are better suited for high-stress areas where long-term strength matters more than quick adjustments.
Precautions
Listed below are recommended optional components or related items. Your particular situation may require alternative recommendations. Please call and talk to our consultants if there are any questions at 800-282-6631.
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Fencing
Staples, 1.6" Barbed for High-Tensile Wire, per lb.
Item #360200 -Heavy-duty barbed staples for affixing insulators or non-electrified high-tensile (HT) wire to wooden posts.
$3.50 -
High-Tensile Wire and Accessories
MK2 Fencing Pliers
Item #408306 -Cut, grip, twist, pull, pry and hammer all with one tool. High quality pliers are an essential part of any fencer’s kit.
$50.00 -
Top
High-Tensile Smooth Wire, 2000 ft coil
Item #301200 -12.5 gauge high-tensile smooth wire for electric fence applications or trellising. High-carbon steel with Class 3 galvanized coating. 2000 ft coil.
$104.00 -
Top
Reddie Reel™ High-Tensile Smooth Wire, 1320 ft spool
Item #301201 -12.5 gauge high-tensile smooth wire for pasture fences, vineyard trellises or fruit and vegetable arbors. Class 3 galvanized coating. 1320 ft spool.
$85.00 -
High-Tensile Wire and Accessories
Single Titan Wire Jenny with Ground Spike
Item #402110 -Spinning jenny from Strainrite Fencing Systems dispenses high-tensile electric fence wire. Friction hub (brake) prevents unraveling.
$270.00 -
Insulators
DuraShield Insulated Ratchet Strainer, each
Item #408323 -10-tooth high-tensile wire strainer with integrated DuraShield insulator helps reduce shorts in wet, debris-prone conditions.
$5.25 -
High-Tensile Wire and Accessories
XT1 Ratchet Strainer, each
Item #330200 -Permanent electric fence strainer for adding tension or splicing strands of high-tensile fencing wire. Made by Strainrite in New Zealand.
$4.50 -
Conductors - Rope / Twine / Wire / Tape
MaxiShock™ Wire, 2640 ft. roll
Item #251015 -Twisted cable conductor for electric fences. Thick layer of galvanized coating for years of outdoor use.
$288.00 -
Conductors - Rope / Twine / Wire / Tape
IntelliBraid® Grazer 2.6, 2000 ft roll
Item #253537 -Premier’s most conductive low-tension electric fence twine—only 20Ω per 1,000 feet! 2.6mm diameter for portability and ease of handling. Ideal for sheep and cattle.
$99.00 -
Conductors - Rope / Twine / Wire / Tape
Speedrite Extreme Wire, 1320 ft
Item #253554 -Lightweight electric fence twine for containing cattle, sheep, goats and swine. Tinned copper strands for superior conductivity and “extreme” shock power.
$105.00 -
Energizer Accessories
PowerLink™ 4.0, 48" long
Item #335505 -Make instant, in-field connections between electric fences without turning off the energizer. Simple to use and effective.
$5.50 -
Fence Connectors and Accessories
Warning Sign
Item #346000 -Let passersby know that your fences are electrified with this easy-to-read electric fence warning sign.
$2.50
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Thomas C from Maine
Well made and stronger than other brands of similar design. I use these to mount standard mesh fencing so it can be electrified with the top wire strand to keep bears out.


