To see product details, add this item to your cart. You can always remove it later.
Ships from
鶹.ca
鶹.ca
Ships from
鶹.ca
Sold by
鶹.ca
鶹.ca
Sold by
鶹.ca
Returns
Eligible for Return, Refund or Replacement within 30 days of receipt
Eligible for Return, Refund or Replacement within 30 days of receipt
This item can be returned in its original condition for a full refund or replacement within 30 days of receipt.
Read full return policy
Payment
Secure transaction
Your transaction is secure
We work hard to protect your security and privacy. Our payment security system encrypts your information during transmission. We don’t share your credit card details with third-party sellers, and we don’t sell your information to others. Learn more
Added to

Sorry, there was a problem.

There was an error retrieving your wish lists. Please try again.

Sorry, there was a problem.

List unavailable.
  • SIGMA ENGINEERED SOLUTIONS ProConnex 41309 Ground Clamp 1/2" - 1"
  • To view this video, download

SIGMA ENGINEERED SOLUTIONS ProConnex 41309 Ground Clamp 1/2" - 1"

4.7 out of 5 stars 1,035 ratings
鶹's Choice highlights highly rated, well-priced products available to ship immediately.
鶹's Choice
To see product details, add this item to your cart. You can always remove it later.

Purchase options and add-ons

Material Copper Alloy
Brand Sigma Engineered Solutions
Item dimensions L x W x H 6.5 x 5.8 x 1.7 Centimetres
Colour Bar
Style Modern

About this item

  • Connects bare wire to copper or steel water pipe or tubing
  • For pipe or copper rod sizes 1/2-in thru 1-in, wire range #10 - #2, and rebar range 5/8-in thru 3/4-in
  • Copper alloy construction with zinc-plated steel screws
  • Product is UL and CSA listed

Frequently bought together

SIGMA ENGINEERED SOLUTIONS ProConnex 41309 Ground Clamp 1/2" - 1"
This item: SIGMA ENGINEERED SOLUTIONS ProConnex 41309 Ground Clamp 1/2" - 1"
$7.60
In Stock
Ships from and sold by 鶹.ca.
+
10 Feet (3 Meter) - Insulated Solid Copper THHN/THWN Wire - 14 AWG, Wire is Made in The USA, Residential, Commerical, Industr
$22.77
Get it by Monday, Aug 4
In Stock
Sold by THE CIMPLE CO and ships from 鶹 Fulfillment.
+
10 Feet (3 Meter) - Insulated Solid Copper THHN/THWN Wire - 10 AWG, Wire is Made in The USA, Residential, Commerical, Industr
$29.00
Get it by Saturday, Aug 2
Only 9 left in stock.
Sold by THE CIMPLE CO and ships from 鶹 Fulfillment.
Total price:$00
To see our price, add these items to your cart.
Details
Added to Cart
Some of these items ship sooner than the others.
Show details Hide details
Choose items to buy together.

What do customers buy after viewing this item?

Page 1 of 1 Start again
Previous set of slides

  1. Highest rated

    in this set of products

  2. Lowest price

    in this set of products

  3. Bestselling

    in this set of products
Next set of slides

Product information

Technical Details

Manufacturer ‎Sigma Electric
Place of Business ‎GARNER, NC, 27529 US
Part Number ‎41309
Product Dimensions ‎6.5 x 5.79 x 1.65 cm; 80 g
Item model number ‎41309
Is discontinued by manufacturer ‎No
Size ‎1 Count (Pack of 1)
Colour ‎Bar
Style ‎Modern
Material ‎Copper Alloy
Power Source ‎Hand Powered
Item Package Quantity ‎1
Number of Pieces ‎1
Certification ‎CSA, UL
Included Components ‎Sigma Electric ProConnex 41309 Ground Clamp 1/2 to 1-Inch, 1-Pack
Batteries Included? ‎No
Batteries Required? ‎No
Item Weight ‎80 g
Country of origin ‎USA

Additional Information

ASIN B002YEIKFW
Customer Reviews
4.7 out of 5 stars 1,035 ratings

4.7 out of 5 stars
鶹 Rank
Date First Available Sept. 10 2006

Feedback

SIGMA ENGINEERED SOLUTIONS ProConnex 41309 Ground Clamp 1/2" - 1"

Found a lower price? Let us know. Although we can't match every price reported, we'll use your feedback to ensure that our prices remain competitive.

Where did you see a lower price?
/
/
/
/
Please sign in to provide feedback.

Product description

Sigma Electric ProConnex 41309 Ground Clamp 1/2 to 1-Inch, 1-Pack

From the manufacturer

Sigma Engineered Solutions
41309 ProConnex Ground Clamp 1/2" - 1" Copper Alloy

FEATURES

Trade Size 1/2"-1"

Trade Size 1/2"-1"

Compatible with trade size 1/2"-1".

#10-#2 Wire Compatible

#10-#2 Wire Compatible

Compatible with #10-#2 wires & 3/8"-3/4" rebar.

UL, CSA Listed

Certifications & Standards

Product is UL Listed, CSA Listed.

Durable Construction

Durable Construction

Copper Alloy Construction.

Sigma Outdoor Weatherproof Electrical Products
ProConnex Ground Clamp 1/2" - 1" Copper Alloy
ProConnex Ground Clamp 1-1/4" - 2"
ProConnex Clamp Type Connector NM/SE 3/8" 100-Pack
ProConnex EMT Set Screw Coupling 3/4" 25-Pack
Customer Reviews
4.7 out of 5 stars 1,035
4.4 out of 5 stars 387
4.7 out of 5 stars 608
4.5 out of 5 stars 37
Type Ground Clamp Ground Clamp Clamp Connector Set Screw Coupling
Material Copper Alloy Copper Alloy Die-Cast Zinc Die-Cast Zinc
Size 1/2"-1" 1-1/4"-2" 3/8" 3/4"
Certifications & Standards UL, CSA UL, CSA UL, CSA UL, CSA
Count 1-Pack 1-Pack 100-Pack 25-Pack

Brands in this category on 鶹

Sponsored

Customer reviews

4.7 out of 5 stars
1,035 global ratings

Review this product

Share your thoughts with other customers
Write a customer review
Contains LEAD and horrible molding process
1 out of 5 stars
Contains LEAD and horrible molding process
Horrible molding process, there are no teeth on it for an even contact around the pipe and worst of all.... It CONTAINS LEAD!
Hide
Thank you for your feedback
Sorry, there was an error
Sorry we couldn't load the review

Top reviews from Canada

  • Electric ian
    5.0 out of 5 stars Recommend
    Reviewed in Canada on June 4, 2025
    Verified Purchase
    Good enough quality and much cheaper than electrical suppliers
    Helpful
     Report
  • NB
    5.0 out of 5 stars Quality
    Reviewed in Canada on January 20, 2025
    Verified Purchase
    Great quality
    Helpful
     Report
  • dennis
    5.0 out of 5 stars perfect
    Reviewed in Canada on November 30, 2024
    Verified Purchase
    Worked for its intended purpose as a jumper between two copper water pipes to complete a ground.
    Helpful
     Report
  • Steve Coffin
    4.0 out of 5 stars Used for Ham Radio grounding rods.
    Reviewed in Canada on February 6, 2025
    Verified Purchase
    Overall the clamps were easy to install and appear able to stand up to the NW BC weather conditions of rain ice wind and snow.
    Again, I was expecting a somewhat heavier clamp but all is well and I'm happy.
    Helpful
     Report
  • GT Dude
    5.0 out of 5 stars Just what I was looking for
    Reviewed in Canada on September 14, 2023
    Verified Purchase
    Just what I wanted to ground a solar panel array and did not want to spend a ton on it.
    Great price and it will get the job done.

    After installing it on my grounding rod, I will spray it with a good quality rust proofing spray to prevent rusting from the elements.
    Helpful
     Report
  • mk
    5.0 out of 5 stars Nice heavy bronze
    Reviewed in Canada on February 24, 2020
    Verified Purchase
    Nice heavy bronze not cheap zinc. I would never consider using a zinc ground clamp which can be deformed during installation.
    Helpful
     Report
  • Europe reviews
    5.0 out of 5 stars As expected. No issues
    Reviewed in Canada on November 10, 2023
    As expected. No issues
    Helpful
     Report
  • MamaShopsDiscounts
    4.0 out of 5 stars Needed
    Reviewed in Canada on December 6, 2023
    Verified Purchase
    My husband needed this for something around the house, he said it was perfect
    Helpful
     Report

Top reviews from other countries

Translate all reviews to English
  • Tyrone Lopez
    5.0 out of 5 stars Buena.
    Reviewed in Mexico on June 21, 2025
    Verified Purchase
    Se siente de calidad y se ajusta sin problemas a la barilla.
    Report
  • Gordon Pritchard
    5.0 out of 5 stars Great product and service!! Highly recommended!
    Reviewed in the United States on July 6, 2025
    Verified Purchase
    Great product and service!! Highly recommended!
    Report
  • Bud Osborne
    5.0 out of 5 stars Well-made and sturdy
    Reviewed in the United States on April 20, 2025
    Verified Purchase
    An excellent way to ground your antenna
    Report
  • Zach A.
    5.0 out of 5 stars Worked Great
    Reviewed in the United States on March 16, 2025
    Verified Purchase
    It worked exactly as expected. I used it to tie my incoming cable service to the house's ground bar.

    It installed easily to the ground bar and looks like it'll hold up. I'd buy again.
    Report
  • Ohio Customer
    4.0 out of 5 stars Provides necessary ground on copper pipe
    Reviewed in the United States on June 2, 2025
    Verified Purchase
    This is the right option to bridge a copper source line to assure a ground is maintained. In my case, code required a second panel ground to incoming water line. The clamp is hefty and has maintained a solid grip after numerous years. Of course, there is really nothing which would work the clamp loose.
    Report

Disclaimer:While we work to ensure that product information is correct, on occasion manufacturers may alter their ingredient lists. Actual product packaging and materials may contain more and/or different information than that shown on our Web site. We recommend that you do not solely rely on the information presented and that you always read and follow labels, warnings, and directions before using or consuming a product. This product may not be right for you. For additional information about a product, please contact the manufacturer. Content on this site is for reference purposes and is not intended to substitute for advice given by a physician, pharmacist, or other licensed health-care professional. You should not use this information as self-diagnosis or for treating a health problem or disease. Contact your health-care provider immediately if you suspect that you have a medical problem. 鶹.ca assumes no liability for inaccuracies or misstatements about products.